{"id":396705,"date":"2021-03-13T17:20:46","date_gmt":"2021-03-13T09:20:46","guid":{"rendered":"http:\/\/4563.org\/?p=396705"},"modified":"2021-03-27T02:57:51","modified_gmt":"2021-03-26T18:57:51","slug":"%e4%bb%8e%e5%b8%8c%e5%8d%a1%e6%96%87%e7%bf%bb%e8%af%91%e8%b0%88%e8%b0%88-ocr-%e7%9a%84%e7%ae%80%e5%8d%95%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=396705","title":{"rendered":"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08 OCR \u7684\u7b80\u5355\u5b9e\u73b0"},"content":{"rendered":"
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\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08 OCR \u7684\u7b80\u5355\u5b9e\u73b0 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : kinglisky <\/span> <\/i> 2<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u6700\u8fd1\u6478\u9c7c\u6574\u7684\uff0c\u6c34\u5e73\u6709\u9650~ <\/p>\n

\u5e0c\u5361\u6587<\/h2>\n

\"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n

\u585e\u5c14\u8fbe\u73a9\u5bb6\u4e00\u5b9a\u4e0d\u4f1a\u964c\u751f\uff0c\u5e0c\u5361\u6587\u662f\u6e38\u620f\u300a\u585e\u5c14\u8fbe\u4f20\u8bf4\u65f7\u91ce\u4e4b\u606f\u300b\u4e2d\u4e00\u79cd\u865a\u6784\u7684\u6587\u5b57\uff0c\u5728\u5e0c\u5361\u65cf\u7684\u5efa\u7b51\u4e0a\u90fd\u80fd\u627e\u5230\u5b83\u7684\u5f71\u5b50\uff0c\u4e4b\u524d\u5b9e\u73b0\u4e86\u4e00\u4e2a\u7b80\u5355\u7684\u5e0c\u5361\u6587\u751f\u6210\u4e0e\u7ffb\u8bd1\u7684\u5de5\u5177\uff0c\u4e0d\u8fc7\u5173\u952e\u7684\u6587\u5b57\u89e3\u6790\u5b9e\u73b0\u7684\u5e76\u4e0d\u4f18\u96c5\uff0c\u4f7f\u7528\u9690\u85cf\u6c34\u5370\u7684\u65b9\u5f0f\u5c06\u4e00\u4e9b\u5173\u952e\u4fe1\u606f\u9690\u85cf\u5728\u5bfc\u51fa\u7684\u56fe\u7247\u4e2d\uff0c\u56fe\u7247\u538b\u7f29\u540e\u9690\u85cf\u4fe1\u606f\u5f88\u5bb9\u6613\u4e22\u5931\uff0c\u5bfc\u81f4\u89e3\u6790\u5931\u8d25\u3002\u6709\u5174\u8da3\u7684\u540c\u5b66\u4e0d\u59a8\u770b\u770b\u4e0a\u4e00\u7bc7\u6587\u7ae0\uff1a\u6478\u4e00\u4e2a\u585e\u5c14\u8fbe\u5e0c\u5361\u6587\u5b57\u8f6c\u6362\u5668\u3002<\/p>\n

\u540e\u9762\u7814\u7a76\u4e86\u4e0b OCR \u7684\u6280\u672f\u5b9e\u73b0\uff0c\u624b\u64b8\u4e86\u4e2a\u7b80\u5355\u7248\u7684\u5e0c\u5361\u6587\u5b57 OCR \u89e3\u6790\u5668\uff0c\u7b80\u5355\u626f\u626f\u5b9e\u73b0\uff0c\u6c34\u5e73\u6709\u9650\u671b\u6307\u70b9\u86e4~<\/p>\n

\n

\u5149\u5b66\u5b57\u7b26\u8bc6\u522b\uff08\u82f1\u8a9e\uff1aOptical Character Recognition\uff0cOCR \uff09\u662f\u6307\u5bf9\u6587\u672c\u8d44\u6599\u7684\u56fe\u50cf\u6587\u4ef6\u8fdb\u884c\u5206\u6790\u8bc6\u522b\u5904\u7406\uff0c\u83b7\u53d6\u6587\u5b57\u53ca\u7248\u9762\u4fe1\u606f\u7684\u8fc7\u7a0b\u3002<\/p>\n<\/blockquote>\n

\u5de5\u5177\u5730\u5740\u5728\u8fd9\uff1a<\/p>\n

    \n
  • \u5de5\u5177\u7684\u6f14\u793a\u5730\u5740\u5728\u8fd9\uff1ahttps:\/\/kinglisky.github.io\/zelda-words<\/li>\n
  • \u6253\u4e0d\u5f00\u7684\u540c\u5b66\u6233\u8fd9\u91cc\uff1ahttp:\/\/nlush.com\/zelda-words\/<\/li>\n
  • \u4ed3\u5e93\u5730\u5740\uff1ahttps:\/\/github.com\/kinglisky\/zelda-words<\/li>\n<\/ul>\n

    \u865a\u6784\u4e16\u754c\u7684\u6587\u5b57\u5f80\u5f80\u662f\u57fa\u4e8e\u73b0\u5b9e\u6587\u5b57\u521b\u9020\u7684\uff0c\u5e0c\u5361\u6587\u4e0e\u82f1\u6587\u5b57\u6bcd\u6570\u5b57\u4e0e\u56db\u4e2a\u7279\u6b8a\u7b26\u53f7\uff08\u5171 40 \u4e2a\u5b57\u7b26\uff09\u76f8\u5bf9\u5e94\uff0c\u89c4\u5219\u5f88\u7b80\u5355\uff0c\u90fd\u5728\u4e0b\u56fe\uff1a<\/p>\n

    \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n

    \u6211\u4eec\u5bfc\u51fa\u7684\u5e0c\u5361\u6587\u56fe\u7247\u957f\u8fd9\u6837\uff1a<\/p>\n

    \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08 \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n

    \u5f00\u59cb\u5427~<\/p>\n

    \u56fe\u7247\u4e8c\u503c\u5316<\/h2>\n

    \u6211\u4eec\u5bfc\u51fa\u5e0c\u5361\u6587\u7684\u56fe\u7247\u989c\u8272\u548c\u6587\u5b57\u6392\u5217\u90fd\u662f\u4e0d\u786e\u5b9a\u7684\uff0c\u6211\u4eec\u9996\u5148\u9700\u8981\u5c06\u56fe\u7247\u505a\u4e00\u4e2a\u5f52\u4e00\u5316\u5904\u7406\uff0c\u56e0\u4e3a\u6211\u4eec\u53ea\u5173\u5fc3\u56fe\u7247\u7684\u6587\u5b57\u5185\u5bb9\uff0c\u6240\u4ee5\u9996\u5148\u8981\u5254\u9664\u989c\u8272\u7684\u5e72\u6270\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u56fe\u7247\u7edf\u4e00\u5904\u7406\u9ed1\u767d\u8272\u8c03\u7684\u56fe\u7247\u3002<\/p>\n

    \u8fd9\u4e2a\u8fc7\u7a0b\u79f0\u4f5c\u4e8c\u503c\u5316 \uff0c\u4e8c\u503c\u5316\u540e\u7684\u56fe\u7247\u66f4\u80fd\u6452\u9664\u5e72\u6270\u7a81\u51fa\u56fe\u7247\u7684\u5185\u5bb9\u7279\u5f81<\/strong>\uff0c\u4e8c\u503c\u5316\u540e\u7684\u56fe\u7247\u53ef\u4ee5\u5f88\u65b9\u4fbf\u7684\u88ab\u5e8f\u5217\u5316\u751f\u6210\u56fe\u7247\u6307\u7eb9\u3002<\/p>\n

    \n

    \u4e8c\u503c\u5316\uff08\u82f1\u8bed\uff1aBinarization \uff09\u662f\u56fe\u50cf\u5206\u5272\u7684\u4e00\u79cd\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u3002\u4e8c\u503c\u5316\u53ef\u4ee5\u628a\u7070\u5ea6\u56fe\u50cf\u8f6c\u6362\u6210\u4e8c\u503c\u56fe\u50cf\u3002\u628a\u5927\u4e8e\u67d0\u4e2a\u4e34\u754c\u7070\u5ea6\u503c\u7684\u50cf\u7d20\u7070\u5ea6\u8bbe\u4e3a\u7070\u5ea6\u6975\u5927\u503c\uff0c\u628a\u5c0f\u4e8e\u8fd9\u4e2a\u503c\u7684\u50cf\u7d20\u7070\u5ea6\u8bbe\u4e3a\u7070\u5ea6\u6975\u5c0f\u503c\uff0c\u4ece\u800c\u5b9e\u73b0\u4e8c\u503c\u5316\u3002<\/p>\n<\/blockquote>\n

    \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08 \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n

    \u56fe\u7247\u4e8c\u503c\u5316\u4e3b\u8981\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n

      \n
    • \u56fe\u7247\u7070\u5ea6\u5904\u7406<\/li>\n
    • \u8ba1\u7b97\u7070\u5ea6\u56fe\u7247\u7684\u4e8c\u503c\u5316\u9608\u503c<\/li>\n
    • \u56fe\u7247\u4e8c\u503c\u5316<\/li>\n<\/ul>\n

      \u56fe\u7247\u7070\u5ea6\u5904\u7406<\/h3>\n

      \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n

      \u6211\u4eec\u4ee5\u4e0a\u9762\u7684\u56fe\u7247\u4e3a\u4f8b\uff0c\u56fe\u7247\u7684\u7070\u5ea6\u5904\u7406\u6bd4\u8f83\u7b80\u5355\uff0c\u5c06 rgb \u901a\u9053\u7684\u989c\u8272\u6309 r * 0.299 + g * 0.587 + b * 0.114<\/code> \u7684\u6bd4\u503c\u76f8\u52a0\u5c31\u80fd\u5f97\u5230\u7070\u5ea6\u503c\uff0c\u56e0\u4e3a\u7070\u5ea6\u56fe\u7247\u7684 rgb \u901a\u9053\u7684\u503c\u90fd\u662f\u76f8\u540c\u7684\uff0c\u6211\u4eec\u53ea\u53d6\u4e00\u4e2a\u901a\u9053\u7684\u503c\u7528\u4e8e\u4e0b\u4e00\u6b65\u8ba1\u7b97\u3002<\/p>\n

      const canvasToGray = (canvas) => {     const ctx = canvas.getContext('2d');     const data = ctx.getImageData(0, 0, canvas.width, canvas.height);     const calculateGray = (r, g, b) => parseInt(r * 0.299 + g * 0.587 + b * 0.114);     const grayData = [];     for (let x = 0; x < data.width; x++) {         for (let y = 0; y < data.height; y++) {             const idx = (x + y * data.width) * 4;             const r = data.data[idx + 0];             const g = data.data[idx + 1];             const b = data.data[idx + 2];             const gray = calculateGray(r, g, b);             grayData.push(gray);         }     }     return grayData; }; <\/code><\/pre>\n
      \u7070\u5ea6\u5904\u7406\u540e\u7684\u56fe\u7247\u5982\u4e0b\uff1a<\/p>\n
      \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n
      \u4e8c\u503c\u5316\u9608\u503c<\/h3>\n
      \u9608\u503c\u8ba1\u7b97\u662f\u56fe\u7247\u4e8c\u503c\u5316\u975e\u5e38\u5173\u952e\u7684\u4e00\u6b65\uff0c\u76f8\u5173\u7684\u7b97\u6cd5\u4e5f\u5f88\u591a\u8fd9\u91cc\uff0c\u8fd9\u91cc\u6211\u4eec\u5148\u8bd5\u8bd5\u4e00\u79cd\u6700\u7b80\u5355\u7684\u5747\u503c\u54c8\u5e0c\uff08 aHash \uff09\u7b97\u6cd5\uff0c\u7b97\u6cd5\u5f88\u7b80\u5355\uff0c\u6c42\u56fe\u7247\u7070\u5ea6\u50cf\u7d20\u7684\u603b\u548c\u518d\u9664\u4ee5\u50cf\u7d20\u70b9\u6570\u91cf\u5f97\u51fa\u5747\u503c\u4f5c\u4e3a\u4e8c\u503c\u5316\u7684\u9608\u503c\u3002\u76f4\u63a5\u4e0a\u4ee3\u7801\uff1a<\/p>\n
      const average = (grayData) => {     let sum = 0;     for (let i = 0; i < grayData.length; i += 1) {         sum += data[i];     }     return sum \/ grayData.length; }; <\/code><\/pre>\n
      \u5176\u4ed6\u8ba1\u7b97\u9608\u503c\u7684\u7b97\u6cd5\u8fd8\u6709\uff1a<\/p>\n
        \n
      • \u611f\u77e5\u54c8\u5e0c pHash<\/li>\n
      • \u5927\u6d25\u7b97\u6cd5 otsu<\/li>\n<\/ul>\n
        \u611f\u5174\u8da3\u7684\u540c\u5b66\u53ef\u4ee5\u4e86\u89e3\u4e0b\uff0cotsu \u7684\u751f\u6210\u7684\u4e8c\u503c\u5316\u6548\u679c\u6bd4\u8f83\u597d\uff0c\u540e\u9762\u6211\u4eec\u4f1a\u6709 otsu \u6765\u5904\u7406\u8ba1\u7b97\u56fe\u7247\u9608\u503c\uff0c\u8fd9\u91cc\u4e5f\u8d34\u4e00\u4e2a otsu \u7684\u5b9e\u73b0\uff1a<\/p>\n
        const otsu = (grayData) => {     let ptr = 0;     \/\/ \u8bb0\u5f55 0-256 \u6bcf\u4e2a\u7070\u5ea6\u503c\u7684\u6570\u91cf\uff0c\u521d\u59cb\u503c\u4e3a 0     let histData = Array(256).fill(0);     let total = grayData.length;      while (ptr < total) {         let h = grayData[ptr++];         histData[h]++;     }     \/\/ \u603b\u6570(\u7070\u5ea6\u503c x \u6570\u91cf)     let sum = 0;     for (let i = 0; i < 256; i++) {         sum += i * histData[i];     }     \/\/ \u80cc\u666f\uff08\u5c0f\u4e8e\u9608\u503c\uff09\u7684\u6570\u91cf     let wB = 0;     \/\/ \u524d\u666f\uff08\u5927\u4e8e\u9608\u503c\uff09\u7684\u6570\u91cf      let wF = 0;     \/\/ \u80cc\u666f\u56fe\u50cf\uff08\u7070\u5ea6 x \u6570\u91cf\uff09\u603b\u548c     let sumB = 0;     \/\/ \u5b58\u50a8\u6700\u5927\u7c7b\u95f4\u65b9\u5dee\u503c     let varMax = 0;     \/\/ \u9608\u503c     let threshold = 0;      for (let t = 0; t < 256; t++) {         \/\/ \u80cc\u666f\uff08\u5c0f\u4e8e\u9608\u503c\uff09\u7684\u6570\u91cf\u7d2f\u52a0         wB += histData[t];         if (wB === 0) continue;         \/\/ \u524d\u666f\uff08\u5927\u4e8e\u9608\u503c\uff09\u7684\u6570\u91cf\u7d2f\u52a0         wF = total - wB;         if (wF === 0) break;         \/\/ \u80cc\u666f\uff08\u7070\u5ea6 x \u6570\u91cf\uff09\u7d2f\u52a0         sumB += t * histData[t];          \/\/ \u80cc\u666f\uff08\u5c0f\u4e8e\u9608\u503c\uff09\u7684\u5e73\u5747\u7070\u5ea6         let mB = sumB \/ wB;         \/\/ \u524d\u666f\uff08\u5927\u4e8e\u9608\u503c\uff09\u7684\u5e73\u5747\u7070\u5ea6         let mF = (sum - sumB) \/ wF;         \/\/ \u7c7b\u95f4\u65b9\u5dee         let varBetween = wB * wF * (mB - mF) ** 2;          if (varBetween > varMax) {             varMax = varBetween;             threshold = t;         }     }      return threshold; }; <\/code><\/pre>\n
        \u56fe\u7247\u4e8c\u503c\u5316<\/h3>\n
        \u6c42\u5f97\u4e86\u9608\u503c\u540e\u6211\u4eec\u518d\u8fdb\u884c\u4e8c\u503c\u5316\u5c31\u5f88\u7b80\u5355\u4e86\uff0c\u4e0d\u8fc7\u8fd9\u91cc\u6709\u6ce8\u610f\u70b9\uff0c\u7531\u4e8e\u6211\u4eec\u751f\u6210\u7684\u56fe\u7247\u6587\u5b57\u989c\u8272\u548c\u80cc\u666f\u989c\u8272<\/strong>\u90fd\u662f\u4e0d\u786e\u5b9a\u7684\uff0c\u6211\u4eec\u6c42\u5f97\u9608\u503c\u540e\uff0c\u8fdb\u884c\u4e8c\u503c\u5316\u65f6\u56fe\u7247\u7684\u80cc\u666f\u989c\u8272\u53ef\u80fd\u5927\u4e8e\u9608\u503c\uff0c\u4e5f\u6709\u53ef\u80fd\u5c0f\u4e8e\u9608\u503c\uff0c\u8fd9\u6837\u5c31\u6ca1\u6cd5\u7edf\u4e00\u6240\u6709\u56fe\u7247\u7684\u8f93\u51fa\u3002\u8fd9\u91cc\u6211\u4eec\u9700\u8981\u89c4\u5b9a\u4e8c\u503c\u5316\u7684\u56fe\u7247\u8f93\u51fa\uff0c\u6211\u4eec\u7edf\u4e00\u5c06\u80cc\u666f\u7684\u989c\u8272\u8bbe\u7f6e\u4e3a\u9ed1\u8272\uff08\u6570\u503c\u4e3a 0 \uff09\uff0c\u6587\u5b57\u989c\u8272\u8bbe\u7f6e\u4e3a\uff08 255 \u767d\u8272\uff09\u3002<\/p>\n
        \u7531\u4e8e\u6211\u4eec\u751f\u6210\u7684\u56fe\u7247\u6bd4\u8f83\u7b80\u5355\uff0c\u56fe\u7247\u7684\u80cc\u666f\u989c\u8272\u53d6\u7b2c\u4e00\u4e2a\u50cf\u7d20\u7684 rgb \u503c\u5c31\u80fd\u786e\u8ba4\u4e86\uff0c\u4ee3\u7801\u5b9e\u73b0\u4e5f\u5f88\u7b80\u5355\uff1a<\/p>\n
        const binaryzationOutput = (originCanvas, threshold) => {     const ctx = originCanvas.getContext('2d');     const imageData = ctx.getImageData(0, 0, originCanvas.width, originCanvas.height);     const { width, height, data } = imageData;     \/\/ \u7b2c\u4e00\u50cf\u7d20\u7684\u503c\u5373\u4e3a\u80cc\u666f\u8272\u503c     const head = (data[0] + data[1] + data[2]) \/ 3;     \/\/ \u5982\u679c\u80cc\u666f\u989c\u8272\u5927\u4e8e\u9608\u503c\uff0c\u5219\u80cc\u666f\u4e0e\u6587\u5b57\u7684\u989c\u8272\u7684\u503c\u5219\u9700\u8981\u8c03\u6362     const color = head > threshold         ? { foreground: 0, background: 255 }         : { foreground: 255, background: 0 };     for (let x = 0; x < width; x++) {         for (let y = 0; y < height; y++) {             const idx = (x + y * width) * 4;             const avg = (data[idx] + data[idx + 1] + data[idx + 2]) \/ 3;             const v = avg > threshold ? color.foreground : color.background;             data[idx] = v;             data[idx + 1] = v;             data[idx + 2] = v;             data[idx + 3] = 255;         }     }     ctx.putImageData(imageData, 0, 0);     return originCanvas.toDataURL(); } <\/code><\/pre>\n
        \u8fd8\u6709\u4e00\u70b9\u9700\u8981\u6ce8\u610f\u4e0b\uff0c\u8fd9\u91cc\u4e8c\u503c\u5904\u7406\u7684\u662f\u539f\u56fe<\/strong>\uff0c\u4e0d\u662f\u7070\u5ea6\u5904\u7406\u540e\u7684\u56fe\u7247\u3002<\/p>\n
        \u5b8c\u6574\u7684\u4ee3\u7801\u6233\u8fd9\uff0c\u4e8c\u503c\u5316\u7684\u56fe\u7247\u5982\u4e0b\uff1a<\/p>\n
        \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n
        \u6587\u5b57\u5207\u5272<\/h2>\n
        \u7ecf\u8fc7\u4e0a\u9762\u7684\u4e8c\u503c\u5316\u5904\u7406\u6211\u4eec\u5df2\u7ecf\u5c06\u56fe\u7247\u7edf\u4e00\u5904\u7406\u6210\u9ed1\u5e95\u767d\u5b57\u7684\u56fe\u7247\uff0c\u64cd\u4f5c\u4e5f\u7279\u522b\u7b80\u5355\uff0c\u4f46\u751f\u4ea7\u7ea7\u522b\u7684 OCR \u5b9e\u73b0\u5f80\u5f80\u8fd8\u4f1a\u6d89\u53ca\u590d\u6742\u7684\u56fe\u7247\u9884\u5904\u7406\uff0c\u5982\u56fe\u7247\u7684\u6295\u5f71\u77eb\u6b63\u3001\u65cb\u8f6c\u77eb\u6b63\u3001\u88c1\u526a\u3001\u56fe\u7247\u964d\u566a\u3001\u9510\u5316\u7b49\u64cd\u4f5c\uff0c\u8fd9\u4e9b\u9884\u5904\u7406\u90fd\u662f\u4e3a\u4e86\u751f\u6210\u4e00\u5f20\u53ea\u5305\u542b\u6587\u5b57\u4fe1\u606f\u7684\u5e72\u51c0\u56fe\u7247\uff0c\u56e0\u4e3a\u4f1a\u5f88\u5927\u7a0b\u5ea6\u7684\u5f71\u54cd\u4e0b\u4e00\u6b65\u6587\u5b57\u5207\u5272\u7684\u6548\u679c\u3002<\/p>\n
        \u540c\u5b57\u9762\u63cf\u8ff0\u4e00\u6837\uff0c\u6211\u4eec\u5f97\u60f3\u529e\u6cd5\u628a\u4e00\u4e2a\u4e2a\u5e0c\u5361\u6587\u5b57\u63d0\u53d6\u51fa\u6765\uff0c\u4e0b\u9762\u4ecb\u7ecd\u4e00\u79cd\u7b80\u5355\u7684\u5207\u5272\u7b97\u6cd5\uff1a\u6295\u5f71\u5207\u5272\u7b97\u6cd5<\/strong>\u3002<\/p>\n
        \u57fa\u672c\u601d\u8def\u662f\uff1a<\/p>\n
          \n
        • \u4ece\u4e0a\u5230\u4e0b\u626b\u63cf\u56fe\u7247\u6bcf\u4e00\u884c\u50cf\u7d20\u503c\uff0c\u5207\u5272\u51fa\u6587\u5b57\u6240\u5728\u7684\u884c<\/li>\n
        • \u4ece\u5de6\u5230\u53f3\u626b\u63cf\u6587\u5b57\u884c\u6bcf\u4e00\u5217\u50cf\u7d20\u503c\uff0c\u5207\u5272\u51fa\u5355\u4e2a\u6587\u5b57<\/li>\n<\/ul>\n
          \u5207\u5272\u884c<\/h3>\n
          \u76f4\u63a5\u770b\u56fe\u5bb9\u6613\u7406\u89e3\u4e00\u70b9\uff0c\u5148\u6765\u5207\u5272\u884c\uff0c\u6211\u4eec\u56fe\u7247\u5927\u5c0f\u662f 700 x 600\uff0c\u4ece\u4e0a\u81f3\u4e0b\u626b\u63cf\u6bcf\u4e00\u884c\u7684\u50cf\u7d20\uff0c\u9ed1\u8272\u50cf\u7d20\u8bb0\u4e3a 0 \u767d\u8272\u50cf\u7d20\u8bb0\u4e3a 1<\/strong>\uff0c\u7edf\u8ba1\u6bcf\u884c 1 \u7684\u4e2a\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u5f97\u5230\u4e0b\u9762\u6298\u7ebf\u56fe\uff1a<\/p>\n
          \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n
          \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n
          \u6a2a\u5750\u6807\u5bf9\u5e94\u56fe\u7247\u7684\u9ad8\u5ea6\uff0c\u7eb5\u5750\u6807\u5bf9\u5e94\u6bcf\u884c\u50cf\u7d20\u70b9\u7684\u4e2a\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u5f88\u76f4\u89c2\u77e5\u9053\u7eb5\u5750\u6807\u4e3a 0 \u7684\u90e8\u5206\u90fd\u662f\u56fe\u7247\u7684\u7a7a\u767d\u95f4\u8ddd\uff0c\u6709\u503c\u7684\u90e8\u5206\u5219\u662f\u6587\u5b57\u5185\u5bb9\u6240\u5728\u7684\u884c\uff0c\u884c\u9ad8\u5219\u662f\u6240\u8de8\u8d8a\u7684\u533a\u95f4\u3002<\/p>\n
          \u5207\u5272\u6587\u5b57\uff08\u5207\u5272\u5217\uff09<\/h3>\n
          \u901a\u8fc7\u4e0a\u4e00\u6b65\u7684\u626b\u63cf\u884c\u6211\u4eec\u5df2\u7ecf\u53ef\u4ee5\u5207\u5272\u51fa\u6587\u5b57\u5185\u5bb9\u6240\u5360\u7684\u884c\uff0c\u4e0b\u4e00\u6b65\u5c31\u662f\u4ece\u5de6\u5230\u53f3\u626b\u63cf\u6587\u5b57\u884c\u6bcf\u5217\u7684\u50cf\u7d20\u503c\uff0c\u540c\u6837\u662f\u9ed1\u8272\u8bb0 0 \u767d\u8272\u8bb0 1\uff0c\u7edf\u8ba1 1 \u7684\u4e2a\u6570\uff0c\u4ee5\u7b2c\u4e00\u884c\u6587\u5b57\u4e3a\u4f8b\uff0c\u5176\u626b\u63cf\u7684\u51fa\u6765\u6298\u7ebf\u56fe\u5982\u4e0b\uff1a<\/p>\n
          \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n
          \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n
          \u55ef\uff0c\u8fd9\u4e2a\u6211\u77e5\u9053\uff0c\u548c\u5207\u5272\u884c\u4e00\u6837\uff0c\u53ea\u8981\u5c06\u7eb5\u5750\u6807\u6709\u503c\u5f97\u90e8\u5206\u5207\u51fa\u6765\u5c31\u597d\uff01<\/p>\n
          \u4f46\u8fd9\u91cc\u4f1a\u6709\u95ee\u9898\uff0c\u5982\u679c\u7b80\u5355\u7684\u6309\u7eb5\u5750\u6807\u6709\u503c\u7684\u533a\u95f4\u53bb\u62c6\u5206\u6587\u5b57\uff0c\u6700\u540e\u4e00\u4e2a\u6587\u5b57\u5c31\u4f1a\u88ab\u62c6\u5206\u5de6\u53f3\u4e24\u90e8\u90e8\u5206\uff1a<\/p>\n
          \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n
          \u539f\u56e0\u4e5f\u5f88\u597d\u7406\u89e3\uff0c\u6700\u540e\u4e00\u4e2a\u6587\u5b57\u662f\u5de6\u53f3\u7ed3\u6784\u7684\uff0c\u4e2d\u95f4\u6709\u7a7a\u9699\u9694\u5f00\uff0c\u6240\u4ee5\u6587\u5b57\u88ab\u62c6\u5f00\u4e86\u3002<\/p>\n
          \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n
          \u53ef\u4ee5\u770b\u770b\u4e0b\u9762\u7684\u51e0\u4e2a\u7279\u6b8a\u7684\u5b57\u7b26\uff0c\u4e00\u822c\u62c6\u5206\u6587\u5b57\u65f6\u6211\u4eec\u9700\u8981\u8003\u8651\u5de6\u53f3\u6216\u8005\u4e0a\u4e0b\u7ed3\u6784\u7684\u6587\u5b57\u3002<\/p>\n
          \u4e0a\u4e0b\u7ed3\u6784\u7684\u6587\u5b57\uff1a<\/strong><\/p>\n
          \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n
          \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n
          \u5de6\u53f3\u7ed3\u6784\u7684\u6587\u5b57\uff1a<\/strong><\/p>\n
          \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n
          \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n
          \u9488\u5bf9\u8fd9\u4e9b\u6587\u5b57\u6211\u4eec\u5e94\u8be5\u5982\u4f55\u5904\u7406\u5462\uff1f\u6211\u4eec\u53ef\u4ee5\u5f88\u5bb9\u6613\u89c2\u5bdf\u51fa\u5e0c\u5361\u6587\u5b57\u90fd\u662f\u6b63\u65b9\u5f62\u7684\uff0c\u90a3\u4e48\u6bcf\u4e2a\u5b57\u4f53\u5bbd\u9ad8\u6bd4\u4f8b\u5e94\u8be5 1 : 1\uff0c\u5982\u679c\u6211\u4eec\u80fd\u77e5\u9053\u6587\u5b57\u7684\u5bbd\u5ea6\u6216\u8005\u9ad8\u5ea6\uff0c\u90a3\u6211\u4eec\u5c31\u662f\u5982\u4f55\u62fc\u63a5\u6587\u5b57\u533a\u57df\u4e86\u3002\u5982\u4f55\u8ba1\u7b97\u6587\u5b57\u7684\u5bbd\u5ea6\u6216\u9ad8\u5ea6\u5462\uff1f<\/p>\n
          \u5904\u7406\u5176\u5b9e\u5f88\u7b80\u5355\uff0c\u9488\u5bf9\u6574\u5f20\u56fe\u7247\uff0c\u6a2a\u5411\u626b\u63cf\u4e00\u6b21\uff0c\u7eb5\u5411\u626b\u63cf\u4e00\u6b21<\/strong>\uff0c\u53ef\u4ee5\u5f97\u5230\u6587\u5b57\u5185\u5bb9\u5728\u6a2a\u7eb5\u65b9\u5411\u4e0a\u7684\u6295\u5f71\u5927\u5c0f\uff0c\u6211\u4eec\u53d6\u6a2a\u7eb5\u6295\u5f71\u4e2d\u6700\u5927\u7684\u533a\u95f4<\/strong>\u5c31\u662f\u6807\u51c6\u6587\u5b57\u7684\u5927\u5c0f\uff0c\u62c6\u5206\u65f6\u6587\u5b57\u5757\u4e0d\u8db3\u6807\u51c6\u5927\u5c0f\u5219\u7ee7\u7eed\u4e0e\u4e0b\u4e2a\u6295\u5f71\u533a\u95f4\u7684\u6587\u5b57\u5757\u5408\u5e76\uff0c\u76f4\u5230\u8fbe\u5230\u6587\u5b57\u7684\u6807\u51c6\u5927\u5c0f\u3002<\/p>\n
          \u6211\u4eec\u5148\u6765\u5b9e\u73b0\u6a2a\u7eb5\u5411\u626b\u63cf\u548c\u6c42\u53d6\u6700\u5927\u6587\u5b57\u5757\u7684\u65b9\u6cd5<\/p>\n
          \/\/ \u6a2a\u7eb5\u5411\u626b\u63cf function countPixel(imageData, isRow = false) {     const { width, height, data } = imageData;     const offsets = [0, 1, 2];     \/\/ \u80cc\u666f\u8272     const head = offsets.map((i) => data[i]);     const pixel = [];     if (isRow) {         \/\/ \u4ece\u4e0a\u81f3\u4e0b\uff0c\u6a2a\u5411\u626b\u63cf         for (let i = 0; i < height; i++) {             let count = 0;             for (let j = 0; j < width; j++) {                 const index = (i * width + j) * 4;                 const isEqual = offsets.every(                     (offset) => head[offset] === data[index + offset]                 );                 count += isEqual ? 0 : 1;             }             pixel.push(count);         }     } else {         \/\/ \u4ece\u5de6\u5230\u53f3\uff0c\u7eb5\u5411\u626b\u63cf         for (let i = 0; i < width; i++) {             let count = 0;             for (let j = 0; j < height; j++) {                 const index = (j * width + i) * 4;                 const isEqual = offsets.every(                     (offset) => head[offset] === data[index + offset]                 );                 count += isEqual ? 0 : 1;             }             pixel.push(count);         }     }     return pixel; }  \/\/ \u62c6\u5206\u6587\u5b57\u4e0e\u80cc\u666f\u533a\u95f4 function countRanges(counts) {     const groups = [];     let foreground = 0;     let background = 0;     counts.forEach((count) => {         if (count) {             foreground += 1;             if (background) {                 groups.push({ background: true, value: background });                 background = 0;             }         } else {             background += 1;             if (foreground) {                 groups.push({ foreground: true, value: foreground });                 foreground = 0;             }         }     });     if (foreground) {         groups.push({ foreground: true, value: foreground });     }     if (background) {         groups.push({ background: true, value: background });     }     return groups; }  \/\/ \u83b7\u53d6\u6587\u5b57\u5185\u5bb9\u7684\u6700\u5927\u533a\u95f4 function getMaxRange(data) {     return data.reduce((max, it) => {         if (it.foreground) {             return Math.max(max, it.value);         }         return max;     }, 0); } <\/code><\/pre>\n
          \u8ba1\u7b97\u56fe\u7247\u4e2d\u6587\u5b57\u5927\u5c0f\uff1a<\/p>\n
          const imageData = {}; \/\/ \u9010\u884c\u626b\u63cf const rowsRanges = countRanges(countPixel(imageData, true)); \/\/ \u9010\u5217\u626b\u63cf const colsRanges = countRanges(countPixel(imageData, false));  \/\/ \u8ba1\u7b97\u6a2a\u7eb5\u50cf\u7d20\u5206\u5e03\u5f97\u51fa\u5b57\u4f53\u5185\u5bb9\u7684\u5927\u5c0f\uff08\u5b57\u4f53\u6b63\u65b9\u5f62\u533a\u57df\uff09 const fontRange = Math.max(     getMaxRange(rowsRanges),     getMaxRange(colsRanges) ); <\/code><\/pre>\n
          \u5408\u5e76\u5de6\u53f3\u4e0a\u4e0b\u7ed3\u6784\u7684\u6587\u5b57\u533a\u95f4\uff1a<\/p>\n
          \/\/ \u5408\u5e76\u7ed3\u6784\u5206\u79bb\u7684\u6587\u5b57\u533a\u95f4 function mergeRanges(data, size) {     const merge = [];     \/\/ chunks \u7528\u6765\u4fdd\u5b58\u5c0f\u4e8e\u6807\u51c6\u6587\u5b57\u5927\u5c0f\u533a\u57df     let chunks = [];     data.forEach((item) => {         if (chunks.length) {             chunks.push(item);             const value = chunks.reduce((sum, chunk) => sum + chunk.value, 0);             \/\/ \u5f53\u524d\u6362\u6210\u7684\u533a\u57df\u5927\u5c0f\u5927\u4e8e\u6216\u63a5\u8fd1\u6807\u51c6\u6587\u5b57\u5927\u5c0f\u5219\u5408\u5e76\u6210\u4e00\u5757             if (value >= size || Math.pow(value - size, 2) < 4) {                 merge.push({                     foreground: true,                     value,                 });                 chunks = [];             }             return;         }         \/\/ \u533a\u57df\u5185\u5bb9\u5c0f\u4e8e\u6807\u51c6\u6587\u5b57\u5927\u5c0f\u662f\u63a8\u5165 chunks         if (item.foreground && item.value < size) {             chunks = [item];             return;         }         merge.push(item);     });     return merge; } <\/code><\/pre>\n
          \u7edf\u4e00\u5904\u7406\u540e\u7684\u533a\u5757\u4fe1\u606f\u5982\u4e0b\uff0c\u6211\u4eec\u53ea\u9700\u6309\u987a\u5e8f\u88c1\u526a\u51fa foreground<\/code> \u4e0e\u5176\u5bf9\u5e94\u7684\u533a\u5757\u5927\u5c0f value<\/code> \u5c31\u597d\u4e86\u3002<\/p>\n
          [     {         \"background\": true,         \"value\": 115     },     {         \"foreground\": true,         \"value\": 70     },     {         \"background\": true,         \"value\": 30     },     {         \"foreground\": true,         \"value\": 70     },     {         \"background\": true,         \"value\": 30     },     {         \"foreground\": true,         \"value\": 70     },     {         \"background\": true,         \"value\": 30     },     {         \"foreground\": true,         \"value\": 70     },     {         \"background\": true,         \"value\": 115     } ] <\/code><\/pre>\n
          \u5269\u4e0b\u7684\u5c31\u662f\u7b97\u5404\u79cd\u504f\u79fb\u503c\u7136\u540e\u4ece cnavas \u4e2d\u5207\u5272\u51fa\u5355\u4e2a\u7684\u6587\u5b57\u5757\u5e76\u8bb0\u5f55\u4e0b\u4f4d\u7f6e\u4fe1\u606f\uff0c\u5177\u4f53\u7684\u5b9e\u73b0\u53ef\u4ee5\u6233\u8fd9\u91cc\uff0c\u5c31\u4e0d\u7ec6\u8bb2\u4e86\uff0c\u5207\u5272\u51fa\u6765\u6587\u5b57\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n
          \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n
          \u76f8\u4f3c\u56fe\u7247\u68c0\u6d4b<\/h2>\n
          \u5207\u5272\u51fa\u6587\u5b57\u540e\uff0c\u5269\u4e0b\u7684\u5c31\u662f\u6587\u5b57\u7684\u7ffb\u8bd1\u4e86\u3002\u5bf9\u4e8e\u5e0c\u5361\u6587\u6211\u4eec\u77e5\u9053\u5b83\u4e0e\u82f1\u6587\u7684\u6620\u5c04\u89c4\u5219\uff0c\u6bcf\u4e2a\u5e0c\u5361\u7b26\u53f7\u80cc\u540e\u5bf9\u90fd\u5bf9\u5e94\u4e00\u4e2a\u82f1\u6587\u7b26\u53f7\uff0c\u6211\u4eec\u53ef\u4ee5\u751f\u6210 40 \u4e2a\u82f1\u6587\u5b57\u7b26\u5bf9\u5e94\u7684\u5e0c\u5361\u7b26\u53f7\u56fe\u7247\u4f5c\u4e3a\u6807\u51c6\u5b57\u7b26\u56fe\u7247\uff0c\u90a3\u4e48\u5e0c\u5361\u56fe\u7247\u7ffb\u8bd1\u5c31\u53ef\u4ee5\u7b80\u5355\u7406\u89e3\u4e3a\uff1a\u5c06\u5207\u5272\u7684\u56fe\u7247\u4e0e\u5df2\u77e5\u7684 40 \u6807\u51c6\u5b57\u7b26\u56fe\u7247\u9010\u4e2a\u8fdb\u884c\u76f8\u4f3c\u6027\u6bd4\u8f83<\/strong>\uff0c\u627e\u51fa\u76f8\u4f3c\u5ea6\u6700\u9ad8\u7684\u56fe\u7247\u5c31\u662f\u76ee\u6807\u5b57\u7b26\u3002<\/p>\n
          \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08<\/p>\n
          \u4e0a\u9762\u4e3a abcdefghijklmnopqrstuvwxyz0123456789.-!?<\/code> \u5bf9\u5e94\u7684\u5e0c\u5361\u7b26\u53f7\u3002<\/p>\n
          \u6211\u4eec\u8be5\u5982\u4f55\u8fdb\u884c\u6bd4\u8f83\u4e24\u5f20\u56fe\u7247\u7684\u76f8\u4f3c\u6027\u5462\uff1f\u5176\u5b9e\u6211\u4eec\u5df2\u7ecf\u5b8c\u6210\u4e86\u5f88\u5927\u4e00\u90e8\u5206\u5de5\u4f5c\uff0c\u5c31\u5dee\u4e34\u95e8\u4e00\u811a\u4e86\u3002\u65e2\u7136\u4e00\u5f20\u5df2\u7ecf\u4e8c\u503c\u5316\u5904\u7406\u6210\u4e86\u9ed1\u767d\u56fe\u7247\uff0c\u6211\u4eec\u5c06\u56fe\u7247\u7684\u9ed1\u8272\u50cf\u7d20\u8f93\u51fa\u4e3a 0 \u767d\u8272\u90e8\u5206\u8f93\u51fa\u4e3a 1 \u8fd9\u6837\u5c31\u53ef\u4ee5\u5f97\u5230\u4e00\u5f20\u56fe\u7247\u7684\u4e8c\u8fdb\u5236\u54c8\u5e0c\uff0c\u81f3\u4e8e\u4e24\u5f20\u56fe\u7247\u7684\u76f8\u4f3c\u6027\u5c31\u662f\u6bd4\u8f83\u4e24\u5f20\u56fe\u7247\u54c8\u5e0c\u540c\u4e00\u4f4d\u7f6e\u7684<\/strong>\u5dee\u5f02\u4e2a\u6570<\/strong>\uff0c\u5176\u5b9e\u5c31\u662f\u8ba1\u7b97\u4e24\u5f20\u56fe\u7247\u7684\u54c8\u5e0c\u7684\u6c49\u660e\u8ddd\u79bb\uff0c\u6c49\u660e\u8ddd\u79bb\u8d8a\u5c0f\uff0c\u4e24\u5f20\u56fe\u7247\u8d8a\u76f8\u4f3c\u3002\u6211\u4eec\u53ea\u9700\u8981\u7b80\u5355\u6539\u53d8\u4e0b\u4e8c\u503c\u5316\u8f93\u51fa\u7684\u4ee3\u7801\u5c31\u80fd\u5f97\u5230\u56fe\u7247\u7684\u54c8\u5e0c\u3002<\/p>\n
          const binaryzationHash = (originCanvas, threshold) => {      const ctx = originCanvas.getContext('2d');     const imageData = ctx.getImageData(0, 0, originCanvas.width, originCanvas.height);     const { width, height, data } = imageData;     \/\/ \u7b2c\u4e00\u50cf\u7d20\u7684\u503c\u5373\u4e3a\u80cc\u666f\u8272\u503c     const head = (data[0] + data[1] + data[2]) \/ 3;     \/\/ \u5982\u679c\u80cc\u666f\u989c\u8272\u5927\u4e8e\u9608\u503c\uff0c\u5219\u80cc\u666f\u4e0e\u6587\u5b57\u7684\u989c\u8272\u7684\u503c\u5219\u9700\u8981\u8c03\u6362     const color = head > threshold         ? { foreground: 0, background: 255 }         : { foreground: 255, background: 0 };     const hash = [];     for (let x = 0; x < width; x++) {         for (let y = 0; y < height; y++) {             const idx = (x + y * width) * 4;             const avg = (data[idx] + data[idx + 1] + data[idx + 2]) \/ 3;             const v = avg > threshold ? color.foreground : color.background;             hash.push(v ? 1 : 0);         }     }     return hash; } <\/code><\/pre>\n
          \u6c49\u660e\u8ddd\u79bb\u7684\u6bd4\u8f83\u4e5f\u5341\u5206\u7b80\u5355\uff1a<\/p>\n
          const hammingDistance = (hash1, hash2) => {     let count = 0;     hash1.forEach((it, index) => {         count += it ^ hash2[index];     });     return count; }; <\/code><\/pre>\n
          \u8fd9\u5c31\u662f\u76f8\u4f3c\u56fe\u7247\u6bd4\u8f83\u6700\u6838\u5fc3\u7684\u4ee3\u7801\u4e86\uff0c\u56e0\u4e3a\u6211\u4eec\u5e76\u4e0d\u80fd\u4fdd\u8bc1\u5207\u5272\u51fa\u6765\u7684\u6587\u5b57\u5757\u5927\u5c0f\u80fd\u6807\u51c6\u56fe\u7247\u4e00\u6837\uff0c\u6240\u4ee5\u6211\u4eec\u4f1a\u5c06\u5207\u5272\u56fe\u7247\u548c\u6807\u51c6\u56fe\u7247\u90fd\u7f29\u5c0f\u6210 8 x 8 \u5927\u5c0f\u518d\u8fdb\u884c\u6bd4\u8f83\uff0c\u4e24\u5f20\u56fe\u7247\u76f8\u4f3c\u6027\u6bd4\u8f83\u4e3b\u8981\u6d41\u7a0b\u5927\u81f4\u5982\u4e0b\uff1a<\/p>\n
            \n
          • \u5c06\u6bd4\u8f83\u7684\u56fe\u7247\u90fd\u7f29\u5c0f\u6210 8 x 8<\/li>\n
          • \u56fe\u7247\u7070\u5ea6\u5316\u5904\u7406<\/li>\n
          • \u8ba1\u7b97\u4e8c\u503c\u5316\u9608\u503c<\/li>\n
          • \u56fe\u7247\u4e8c\u503c\u5316\u8ba1\u7b97\u56fe\u7247\u54c8\u5e0c<\/li>\n
          • \u6bd4\u8f83\u4e24\u5f20\u56fe\u7247\u54c8\u5e0c\u7684\u6c49\u660e\u8ddd\u79bb<\/li>\n<\/ul>\n
            \u4e4b\u524d\u8be6\u7ec6\u6574\u7406\u8fc7\u4e00\u7bc7\u76f8\u4f3c\u56fe\u7247\u8bc6\u522b\u7684\u6587\u7ae0\uff0c\u5bf9\u6b64\u611f\u5174\u8da3\u7684\u540c\u5b66\u53ef\u4ee5\u770b\u770b\u8fd9\u7bc7\u6587\u7ae0\uff1a\u76f8\u4f3c\u56fe\u7247\u8bc6\u522b\u7684\u6734\u7d20\u5b9e\u73b0\u3002<\/p>\n
            \u56de\u5230\u6211\u4eec\u5e0c\u5361\u6587\u7ffb\u8bd1\u4e0a\uff0c\u6240\u4ee5\u6211\u4eec\u73b0\u5728\u8981\u505a\u53ea\u6709\u4e09\u6b65\uff1a<\/p>\n
              \n
            1. 40 \u4e2a\u6807\u51c6\u56fe\u7247\u7edf\u4e00\u7f29\u5c0f\u6210 8 x 8 \u5e76\u751f\u6210\u5bf9\u5e94\u7684\u56fe\u7247\u54c8\u5e0c<\/li>\n
            2. \u5207\u5272\u51fa\u7684\u6587\u5b57\u56fe\u7247\u7edf\u4e00\u7f29\u5c0f\u6210 8 x 8 \u5e76\u751f\u6210\u5bf9\u5e94\u7684\u56fe\u7247\u54c8\u5e0c<\/li>\n
            3. \u5207\u5272\u51fa\u6587\u5b57\u54c8\u5e0c\u9010\u4e2a\u4e0e 40 \u4e2a\u6807\u51c6\u56fe\u7247\u54c8\u5e0c\u6bd4\u8f83\uff0c\u6311\u9009\u51fa\u5dee\u5f02\uff08\u76f8\u4f3c\u5ea6\u6700\u9ad8\u7684\uff09\u6700\u5c0f\u5c31\u662f\u76ee\u6807\u5b57\u6bcd<\/li>\n<\/ol>\n
              \u4ee3\u7801\u5b9e\u73b0\u4e5f\u6bd4\u8f83\u7b80\u5355\uff1a<\/p>\n
              async function createImageFingerprints(image) {     const contents = splitImage(image);     return contents.map(({ canvas, ...args }) => {         \/\/ \u7edf\u4e00\u7f29\u5c0f\u5230 8 \u50cf\u7d20         const imageData = resizeCanvas(canvas, 8);         const hash = binaryzationOutput(imageData);         return {             ...args,             hash,         };     }); }  \/\/ \u751f\u6210\u6807\u51c6\u5b57\u7b26\u6307\u7eb9 function createSymbols(fingerprints) {     const WORDS = 'abcdefghijklmnopqrstuvwxyz0123456789.-!?';     return fingerprints.map((it, index) => {         return {             name: WORDS[index],             value: it.hash,         };     }); }  \/\/ \u5339\u914d\u51fa\u6700\u76f8\u4f3c\u7684\u5b57\u7b26 function mapSymbols(fingerprints, symbols) {     return fingerprints.map(({ hash, ...position }) => {         const isEmpty = hash.every((v:) => v === hash[0]);         if (isEmpty) {             return ' ';         }         let diff = Number.MAX_SAFE_INTEGER;         let word = '*';         symbols.forEach((symbol) => {             const distance = hammingDistance(hash, symbol.value);             \/\/ \u6c49\u660e\u8ddd\u79bb\u5927\u4e8e\u6807\u8bc6\u76f8\u4f3c\u5ea6\u504f\u5dee\u8f83\u5927\u6392\u9664             if (distance < diff) {                 diff = distance;                 word = symbol.name;             }         });         return {             ...position,             word,             diff,         };     }); } <\/code><\/pre>\n
              \u4f7f\u7528\u5927\u6982\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n
              \/**   * @param imageUrl \u89e3\u6790\u7684\u56fe\u7247  * @param mapUrl \u6807\u51c6\u5b57\u7b26\u56fe\u7247 *\/ export async function readMetaInfo(imageUrl, mapUrl) {     const mapImage = await loadImage(mapUrl);     const mapImageFingerprints = await createImageFingerprints(mapImage, false);     const symbols = createSymbols(mapImageFingerprints);     const readImage = await loadImage(imageUrl);     const readImageFingerprints = await createImageFingerprints(         readImage,         true     );     const results = mapSymbols(readImageFingerprints, symbols);     console.log(results); } <\/code><\/pre>\n
              \u5b8c\u6574\u4ee3\u7801\u5b9e\u73b0\u53ef\u4ee5\u6233\u8fd9\u91cc\uff0c\u81f3\u6b64\u4e00\u4e2a\u7b80\u7b80\u7b80\u5355\u7248\u7684\u5e0c\u5361\u6587 OCR \u7ffb\u8bd1\u5668\u5c31\u5b8c\u6210\u4e86~<\/p>\n
              \u5176\u4ed6<\/h2>\n
                \n
              • \u6478\u4e00\u4e2a\u585e\u5c14\u8fbe\u5e0c\u5361\u6587\u5b57\u8f6c\u6362\u5668<\/li>\n
              • \u76f8\u4f3c\u56fe\u7247\u8bc6\u522b\u7684\u6734\u7d20\u5b9e\u73b0<\/li>\n
              • \u5229\u7528 JS \u5b9e\u73b0\u591a\u79cd\u56fe\u7247\u76f8\u4f3c\u5ea6\u7b97\u6cd5<\/li>\n
              • \u6587\u5b57\u5207\u5272\u7b97\u6cd5-\u57fa\u4e8e\u6295\u5f71\u7684\u5207\u5272<\/li>\n
              • \u6587\u5b57\u5207\u5272\u7b97\u6cd5-\u6295\u5f71\u5207\u5272\u4f18\u5316<\/li>\n<\/ul>\n
                \u6478\u9c7c\u505a\u7684\u4e00\u4e2a\u5c0f\u4e1c\u897f\uff0c\u7c97\u7565\u7684\u4e86\u89e3\u4e86\u4e0b OCR \u7684\u5b9e\u73b0\u8fd8\u662f\u5f88\u5f00\u5fc3\u7684\u3002<\/p>\n<\/p><\/div>\n
                 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (41<\/span>)        <\/div>\n
                 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
                  \n
                • \n
                  \n
                  \n
                   \u8cc7\u6df1\u5927\u4f6c : Vegetable <\/span>  <\/div>\n
                   <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                               \u597d\u6d3b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                • \n
                  \n
                  \n
                   \u8cc7\u6df1\u5927\u4f6c : fate <\/span>  <\/div>\n
                   <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                               \u725b\u76ae\uff01                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                • \n
                  \n
                  \n
                   \u8cc7\u6df1\u5927\u4f6c : server <\/span>  <\/div>\n
                   <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                               \u8fd9\u8981\u662f\u6478\u9c7c,\u90a3\u6211\u6478\u7684\u5565                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                • \n
                  \n
                  \n
                   \u8cc7\u6df1\u5927\u4f6c : 1239305697 <\/span>  <\/div>\n
                   <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                               \u80fd\u505a\u6210 emoji \u5417\uff0c\u4ee5\u540e\u4ee3\u7801\u5c31\u7528\u8fd9\u4e2a\u6765\u5199\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                • \n
                  \n
                  \n
                   \u8cc7\u6df1\u5927\u4f6c : test3207 <\/span>  <\/div>\n
                   <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                               \uff08 blog \u8bc1\u4e66\u8fc7\u671f\u5566\uff01                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                • \n
                  \n
                  \n
                   \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : kinglisky <\/span>  <\/div>\n
                   <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                               @test3207 \u7eb3\u5c3c\uff0c\u597d\u4e45\u6ca1\u770b\u4e86                                                             <\/div>\n<\/p><\/div>\n<\/li>\n
                • \n
                  \n
                  \n
                   \u8cc7\u6df1\u5927\u4f6c : PopRain <\/span>  <\/div>\n
                   <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                               \u8bad\u7ec3\u4e00\u4e0b tesseract ocr\uff0c\u518d\u548c\u81ea\u5df1\u7b97\u6cd5 PK \u4e00\u4e0b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                • \n
                  \n
                  \n
                   \u8cc7\u6df1\u5927\u4f6c : Jrue0011 <\/span>  <\/div>\n
                   <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                               \u597d\uff0c\u5c31\u5f53\u6211\u5df2\u7ecf\u5b66\u4f1a\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                • \n
                  \n
                  \n
                   \u8cc7\u6df1\u5927\u4f6c : kassadin <\/span>  <\/div>\n
                   <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                   \"\u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08 <\/div>\n<\/p><\/div>\n<\/li>\n
                • \n
                  \n
                  \n
                   \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : kinglisky <\/span>  <\/div>\n
                   <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                               @PopRain \u770b\u4e86\u770b\u9879\u76ee\uff0c\u55ef\uff0c\u662f\u6211\u4e0d\u4f1a\u7684\u4e1c\u897f                                                             <\/div>\n<\/p><\/div>\n<\/li>\n
                • \n
                  \n
                  \n
                   \u8cc7\u6df1\u5927\u4f6c : crackhopper <\/span>  <\/div>\n
                   <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                               \u5df2\u7ecf\u77e5\u9053\u4e86\u5e0c\u5361\u6587\u6620\u5c04\u5b57\u6bcd\uff0c\u8fd9\u4e2a\u5148\u9a8c\u5c31\u5f88\u5f3a\u4e86\uff1b\u4f46\u8fd8\u77e5\u9053\u4e86\u56fe\u7247\u6c49\u660e\u8ddd\u79bb\u53ef\u4ee5\u4f5c\u4e3a\u76f8\u4f3c\u5ea6\uff0c\u90a3\u5c31\u57fa\u672c\u5df2\u7ecf\u6c42\u89e3\u4e86\u3002<\/p>\n
                  \u6211\u8fd8\u4ee5\u4e3a\u662f\u6839\u636e\u5b57\u7b26\u51fa\u73b0\u7684\u8bed\u4e49\u548c\u573a\u666f\uff0c\u505a\u7edf\u8ba1\uff0c\u5206\u8bcd\uff0c\u7528\u8bed\u8a00\u5b66+\u7b97\u6cd5\u90a3\u5957\u641e\u7684\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
                • \n
                  \n
                  \n
                   \u8cc7\u6df1\u5927\u4f6c : crackhopper <\/span>  <\/div>\n
                   <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                               \u54e6\u54e6\uff0c\u662f\u505a OCR \u3002\u6211\u9519\u4e86\u3002\u6211\u4ee5\u4e3a\u662f\u505a\u8bed\u8a00\u8bc6\u522b\u548c\u7ffb\u8bd1\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                • \n
                  \n
                  \n
                   \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : kinglisky <\/span>  <\/div>\n
                   <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                               @crackhopper \u6574\u4e0d\u4e86\u90a3\u4e48\u9ad8\u6df1\u7684\u4e1c\u897f\uff0c\u5c31\u662f\u5207\u5272\u6587\u5b57\uff0c\u7136\u540e\u505a\u4e2a\u56fe\u7247\u7684\u76f8\u4f3c\u5ea6\u5224\u65ad\uff0c\u563f\u563f~                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                • \n
                  \n
                  \n
                   \u8cc7\u6df1\u5927\u4f6c : 8bit <\/span>  <\/div>\n
                   <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                               \u6700\u559c\u6b22\u8fd9\u79cd\u8ba4\u771f\u641e\u4e0d\u52a1\u6b63\u4e1a\u7684\u6d3b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                • \n
                  \n
                  \n
                   \u8cc7\u6df1\u5927\u4f6c : iamsk <\/span>  <\/div>\n
                   <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
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                                                                               \u592a\u5f3a\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                                                                               \u597d\u5389\u5bb3~                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                                                                               \u989d\u3002\u3002\u3002\u6211\u60f3\u8bf4\u4e2a\u5565\u3002\u3002\u3002\u4f3c\u4e4e\u8fd9\u662f\u6700\u57fa\u672c\u7684\u56fe\u50cf\u8bc6\u522b\u6280\u672f\uff0c\u4e0d\u5916\u4e4e\u5230\u5e95\u662f\u4ec0\u4e48\u6587\u5b57\uff0c\u800c\u5728\u4e8e\u539f\u59cb\u56fe\u7247\u5e93\u91cc\u5b57\u7b26\u548c\u56fe\u5f62\u7684\u5bf9\u5e94\u5173\u7cfb\u3002\u81f3\u4e8e OCR\uff0c\u90a3\u8981\u5904\u7406\u7684\u662f\u5404\u79cd\u53d8\u5f62\uff0c\u7a0d\u5fae\u7ed9\u626d\u66f2\u4e00\u4e0b\u5565\u7684\uff0c\u80fd\u8bc6\u522b\u3002\u3002\u3002
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                   \u8cc7\u6df1\u5927\u4f6c : cpstar <\/span>  <\/div>\n
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                                                                               \u81f3\u4e8e\u8fd9\u4e2a\u5e0c\u5361\u6587\uff0c\u6211\u4e0d\u6e05\u695a\u80cc\u666f\u662f\u4e2a\u5565\uff0c\u8fd9\u4e0d\u8fd8\u662f\u82f1\u8bed\u4e48\uff0c\u53ea\u4e0d\u8fc7\u5f04\u4e86\u4e00\u5bf9\u5947\u602a\u5b57\u7b26\u53bb\u5bf9\u5e94\uff0c\u770b\u4f3c\u5bc6\u7801\u5b66\uff0c\u6700\u6700\u6700\u6700\u5165\u95e8\u7684\u90a3\u79cd\u52a0\u5bc6\u65b9\u6cd5                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                   \u8cc7\u6df1\u5927\u4f6c : icyalala <\/span>  <\/div>\n
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                                                                               @cpstar \u585e\u5c14\u8fbe\u4f20\u8bf4\uff0c\u662f\u4e00\u4e2a\u975e\u5e38\u77e5\u540d\u7684 Switch \u72ec\u5360\u6e38\u620f\u3002
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                  \u5355\u7eaf\u6280\u672f\u4e0a\u8bb2\u53ef\u80fd\u7684\u786e\u6ca1\u90a3\u4e48\u590d\u6742\uff0c\u4f46\u662f\u4e3b\u505a\u5f97\u4e1c\u897f\u5f88\u6709\u8da3~                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                                                                               @cpstar https:\/\/3type.cn\/3typezine\/typebites\/01.html \u63a8\u8350\u4e00\u7bc7\u6587\u7ae0\u54c8~                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                                                                               \u8fd9\u4e2a\u5389\u5bb3\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                                                                               \u8bb2\u7684\u86ee\u6e05\u695a                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                   \u8cc7\u6df1\u5927\u4f6c : Torpedo <\/span>  <\/div>\n
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                                                                               \u8bb2\u7684\u633a\u597d\u3002\u5173\u952e\u66f4\u5389\u5bb3\u7684\u662f\u6709\u80fd\u529b\u628a\u8fd9\u4e2a\u8bae\u9898\u641e\u7684\u8fd9\u4e48\u6e05\u695a\u3002\u3002\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                   \u8cc7\u6df1\u5927\u4f6c : wowboy <\/span>  <\/div>\n
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                                                                               \u54c8\u54c8\u54c8\uff0c\u60f3\u8d77\u4e86\u672c\u79d1\u5ba4\u53cb\u505a\u7684\u8f66\u724c\u8bc6\u522b\uff0c\u4e5f\u662f\u7528\u7684\u8fd9\u79cd\u65b9\u6cd5                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                                                                               \u6709\u70b9\u610f\u601d\u3002\u6b63\u597d\u73a9\u585e\u5c14\u8fbe\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                                                                               \u4f60\u7ba1\u8fd9\u53eb\u6478\u9c7c\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                                                                               \u8fd9\u4e2a\u771f\u8fd8\u6709\u70b9\u610f\u601d                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                                                                               \u867d\u7136\u5f88\u68d2
                  \u4f46\u662f\u5927\u4eba\u65f6\u4ee3\u53d8\u4e86\uff0c\u4f20\u7edf OCR \u00d7 AI \u68ad\u54c8 \u221a                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                   \u8cc7\u6df1\u5927\u4f6c : laqow <\/span>  <\/div>\n
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                                                                               \u5176\u5b9e\u96be\u5ea6\u5728\u7b97\u6cd5\uff0c\u5228\u53bb\u7b97\u6cd5\u5269\u4e0b\u7684\u6846\u67b6\u5e94\u8be5\u90fd\u4e00\u6837\u7684                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                   \u8cc7\u6df1\u5927\u4f6c : Microi <\/span>  <\/div>\n
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                  \u6d77\u62c9\u9c81\u8003\u53e4\u5b66\u5bb6\u2713                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                                                                               \u5389\u5bb3\u554a\uff5e                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                   \u8cc7\u6df1\u5927\u4f6c : Thymolblue <\/span>  <\/div>\n
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                                                                               \u5e2e\u5927\u5fd9\u4e86\uff01                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                   \u8cc7\u6df1\u5927\u4f6c : reiji <\/span>  <\/div>\n
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                                                                               \u8fd9\u4e2a\u9898\u76ee\u6709\u610f\u601d\uff0c\u5b9e\u73b0\u4e5f\u5f88\u6709\u542f\u53d1\uff0c\u6211\u6709\u7a7a\u7684\u65f6\u5019\u8bd5\u4e00\u4e0b\u7528 tensorflow.js \u6765\u5b9e\u73b0\u4e0b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                   \u8cc7\u6df1\u5927\u4f6c : HeapOverflow <\/span>  <\/div>\n
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                                                                               \u8fd9\u6478\u7684\u662f\u9cb8\u9c7c\u5427                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                   \u8cc7\u6df1\u5927\u4f6c : zhutter <\/span>  <\/div>\n
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                                                                               \u786c\u6838\u6d77\u62c9\u9c81\u8001\u6d41\u6c13                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                   \u8cc7\u6df1\u5927\u4f6c : agagega <\/span>  <\/div>\n
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                                                                               \u4e3a\u5565\u6bd4\u8f83 hash \u7684\u6c49\u660e\u8ddd\u79bb\u5c31\u53ef\u4ee5\uff1f\u4e24\u5f20\u56fe\u7247\u5982\u679c\u6709\u5dee\uff0chash \u4e0d\u4f1a\u5f88\u4e0d\u4e00\u6837\u5417\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                   \u8cc7\u6df1\u5927\u4f6c : codehz <\/span>  <\/div>\n
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                                                                               @agagega \u56e0\u4e3a\u90fd\u662f\u673a\u5668\u751f\u6210\u7684\uff0c\u6240\u4ee5\u4e00\u5b9a\u662f\u5b8c\u5168\u4e00\u81f4\u7684\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u5c31\u53ef\u884c\u4e86\u3002\u3002\u3002\uff08\u751a\u81f3\u8fde\u6295\u5f71\u90fd\u4e0d\u9700\u8981\u4fee\u590d                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                   \u8cc7\u6df1\u5927\u4f6c : steveway <\/span>  <\/div>\n
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                                                                               \u90a3\u662f\u771f\u6ef4 nb!                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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                  \u4ece\u5e0c\u5361\u6587\u7ffb\u8bd1\u8c08\u8c08 OCR \u7684\u7b80\u5355\u5b9e…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/396705"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=396705"}],"version-history":[{"count":1,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/396705\/revisions"}],"predecessor-version":[{"id":396707,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/396705\/revisions\/396707"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=396705"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=396705"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=396705"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}