{"id":197863,"date":"2020-11-04T21:59:50","date_gmt":"2020-11-04T13:59:50","guid":{"rendered":"http:\/\/4563.org\/?p=197863"},"modified":"2020-11-23T05:24:00","modified_gmt":"2020-11-22T21:24:00","slug":"%e5%9b%be%e7%89%87%e5%b0%ba%e5%af%b8-1200x900-%e7%bc%a9%e5%b0%8f%e5%88%b0-800x600-%e6%9c%89%e5%8a%9e%e6%b3%95%e6%9b%b4%e6%b8%85%e6%99%b0%e5%90%97%ef%bc%9f%ef%bc%88%e5%9b%be%e7%89%87%e6%9f%a5%e7%9c%8b","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=197863","title":{"rendered":"\u56fe\u7247\u5c3a\u5bf8 1200×900 \u7f29\u5c0f\u5230 800×600 \u6709\u529e\u6cd5\u66f4\u6e05\u6670\u5417\uff1f\uff08\u56fe\u7247\u67e5\u770b\u5de5\u5177 100%>75%\u662f\u66f4\u6e05\u6670\u7684\uff09"},"content":{"rendered":"
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\u56fe\u7247\u5c3a\u5bf8 1200×900 \u7f29\u5c0f\u5230 800×600 \u6709\u529e\u6cd5\u66f4\u6e05\u6670\u5417\uff1f\uff08\u56fe\u7247\u67e5\u770b\u5de5\u5177 100%>75%\u662f\u66f4\u6e05\u6670\u7684\uff09 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : wzw <\/span> <\/i> 6<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
\u76ee\u524d\u7528\u56fe\u7247\u67e5\u770b\u5668\u7f29\u5c0f\u662f\u4f1a\u770b\u5f97\u66f4\u6e05\u6670\uff0c100% > 75%\u7684\u65f6\u5019\u662f\u66f4\u6e05\u6670\u7684\u3002 \u4f46\u662f\u7528 pillow \u7684 resize \u5c31\u60e8\u4e0d\u5fcd\u7779\u4e86\u3002<\/p>\n

1200×900 \u7f29\u5c0f\u5230 800×600 \u6216\u8005 600×450<\/p>\n

\u6709\u4ec0\u4e48\u529e\u6cd5\uff0c \u7528 python \u5b9e\u73b0\u5417\uff1f<\/p>\n

\u539f\u56fe\uff1a
\"\u56fe\u7247\u5c3a\u5bf8 <\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (37<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : jdhao <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    resize \u7684\u65f6\u5019\u662f\u6709 filter \u53c2\u6570\u53ef\u8c03\u8282\u7684\uff0c\u67e5\u4e00\u4e0b\uff0c\u6362\u4e00\u4e2a\u9ad8\u7cbe\u5ea6\u7684 filter\uff0c\u9ed8\u8ba4\u7684 filter \u4e0d\u884c\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : wzw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @jdhao #1 https:\/\/pillow.readthedocs.io\/en\/stable\/reference\/Image.html#PIL.Image.Image.resize<\/p>\n

    \u8bf7\u95ee\u4f60\u8bf4\u7684\u54ea\u4e2a\u53c2\u6570\uff0c \u6211\u8bd5\u8fc7\u7f51\u4e0a\u8bf4\u7684\u4e00\u4e9b <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : wzw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @jdhao #1 \u57fa\u672c\u90fd\u662f\u8bf4 Image.ANTIALIAS\uff0c \u4f46\u662f\u65e0\u6548 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : jdhao <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @wzw \u7528 PIL \u7684\u8bdd\uff0cPIL.Image.LANCZOS\uff0c\u8fd9\u4e2a\u7cbe\u5ea6\u5e94\u8be5\u662f\u6700\u9ad8\u7684\uff0c\u901f\u5ea6\u6700\u6162 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : jdhao <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @jdhao \u6216\u8005 bicubic \u4e5f\u8bd5\u4e00\u4e0b <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : songzhengqian <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e2a\u4eba\u89c2\u70b9\uff1a\u4ece\u5927\u5c3a\u5bf8\u53d8\u4e3a\u5c0f\u5c3a\u5bf8\u5206\u8fa8\u7387\u5c31\u4f1a\u964d\u4f4e\uff0c\u76f8\u5f53\u4e8e\u538b\u7f29\u4e86\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : wzw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @jdhao #4 @jdhao #5 LANCZOS\/bicubic \u6548\u679c\u90fd\u8fd8\u662f\u5f88\u6a21\u7cca <\/p>\n

    \u8bf7\u770b\u7ed3\u679c \"\u56fe\u7247\u5c3a\u5bf8 <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : wzw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @songzhengqian #6 \u4f46\u662f \u56fe\u7247\u67e5\u770b\u5668\u7f29\u5c0f\u662f\u4f1a\u770b\u5f97\u66f4\u6e05\u6670\uff0c100% > 75%\u300150%\u7684\u65f6\u5019\u662f\u66f4\u6e05\u6670\u7684<\/p>\n

    \u662f\u4e0d\u662f\u9700\u8981\u63d0\u5347 dpi <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
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    \u8cc7\u6df1\u5927\u4f6c : jdhao <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @wzw Let me see see. \u7b49\u4f1a\u7ed9\u4f60\u7ed3\u679c\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : ipwx <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8981\u4e0d\u8981\u8bd5\u8bd5\u8f93\u51fa pdf \u3002\u3002\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : jifengg <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5012\u662f\u6ca1\u6709\u770b\u51fa\u7f29\u5c0f\u7684\u65f6\u5019\u54ea\u91cc\u66f4\u6e05\u6670\u4e86\u3002
    \u4e0d\u8fc7\u53d1\u73b0 v \u7ad9\u7684\u56fe\u5e8a\uff0cpng \u56fe\u7247\u7f29\u653e\u4e4b\u540e\u5c3a\u5bf8\u53cd\u800c\u5927\u4e86\uff0c\u539f\u56fe 20K\uff0c\u8d34\u51fa\u6765\u7684\u5927\u56fe\u662f 80K \u3002 @livid <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : xiangyuecn <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u65e0\u6cd5\u6b63\u786e\u8868\u8fbe 0.49 \u50cf\u7d20\uff0c\u56db\u820d\u4e94\u5165\u4e3a 0\uff0c\u666e\u901a\u7f29\u653e\u7684\u65f6\u5019\u90a3\u4e9b\u659c\u7ebf\u6700\u5bb9\u6613\u4e22\u5931 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : wzw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @jdhao #9 \u7b49\u4f60\u7ed3\u679c\uff0c\u8c22\u8c22<\/p>\n

    @ipwx #10 \u4e00\u5b9a\u8981\u56fe\uff0c \u8981\u63d2\u5165\u5230 word \u7528<\/p>\n

    @jifengg #11 \u4f60\u7528\u770b\u56fe\u8f6f\u4ef6\u6253\u5f00\uff0c \u7136\u540e 100%\u300b 50%\u8bd5\u8bd5<\/p>\n

    @xiangyuecn #12 \u76ee\u524d\u5c31\u662f\u60f3\u548c\u770b\u56fe\u8f6f\u4ef6\u4e00\u6837\u7f29\u653e\u5c31\u884c <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : wzw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @jifengg #11 \u6211\u4e5f\u89c9\u5f97\u5947\u602a\uff0c \u5e94\u8be5\u8fd9\u6837\u770b\u624d\u662f\u5bf9\u7684\uff0c \u624d\u662f\u539f\u56fe\uff1a <\/p>\n

    https :\/\/ i.v2ex.co \/ CS69YwBh.png<\/p>\n

    \"\u56fe\u7247\u5c3a\u5bf8 <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
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    \u8cc7\u6df1\u5927\u4f6c : zhoushiya <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    https:\/\/i.loli.net\/2020\/11\/18\/wDqokbLXS7vOJEh.png <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : wzw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @zhoushiya #15 \u8bf7\u95ee\u4f60\u662f\u5982\u4f55\u505a\u5230\u7684\uff0c \u8c22\u8c22\uff01 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : zhoushiya <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @wzw #16 \u505a\u56fe\u8f6f\u4ef6 firework \u7f29\u653e\u7684\u3002\u3002\u3002\u3002\u3002\u3002\u5b83\u4e5f\u53ef\u4ee5\u8bbe\u7f6e\u6279\u5904\u7406\u811a\u672c\uff0c\u4f60\u5982\u679c\u6709\u5927\u91cf\u56fe\u53ef\u4ee5\u7528\u6279\u5904\u7406 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : wzw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @zhoushiya #17 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : also24 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u975e\u6574\u6570\u500d\u7684\u7f29\u653e\uff0c\u6211\u4e00\u822c\u4e60\u60ef\u5148\u653e\u5927\u518d\u7f29\u5c0f\uff0c\u8fd9\u662f\u5148\u5c06\u56fe\u7247\u62c9\u4f38\u5230 2400*1800\uff0c\u518d\u7f29\u5c0f\u5230 800*600 \u7684\u6548\u679c\u3002<\/p>\n

    https:\/\/i.loli.net\/2020\/11\/18\/D2hibEvwmM1VLUN.png <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
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    \u8cc7\u6df1\u5927\u4f6c : jdhao <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @wzw \u6211\u8bd5\u4e86 PIL \u7684\u6240\u6709 resample filter\uff0c\u4f3c\u4e4e\u90fd\u4e0d\u884c\uff0c\u51fa\u6765\u7684\u90fd\u662f\u6a21\u7cca\u7684\uff0c\u53e6\u5916 Image.ANTIALIAS == Image.LANCZOS \u3002<\/p>\n

    \u4e0d\u8fc7 opencv \u7684 resize \u6548\u679c\u8fd8\u884c\uff0c\u4e0b\u9762\u662f\u53ef\u8fd0\u884c\u7684\u4ee3\u7801\uff1a<\/p>\n

    import cv2 <\/p>\n

    def main():
    im = cv2.imread(‘big_image.png’)
    im_resize = cv2.resize(im, (800, 600), interpolation=cv2.INTER_LANCZOS4)
    write_param = [cv2.IMWRITE_PNG_COMPRESSION, 5]
    cv2.imwrite(‘big-resized.png’, im_resize, write_param) <\/p>\n

    if __name__ == “__main__”:
    main() <\/p>\n

    \u4e0a\u9762\u7684 interpolation \u7c7b\u4f3c PIL \u4e2d\u7684 resample filter\uff0c\u9664\u4e86 cv2.INTER_LANCZOS4\uff0c\u8fd8\u53ef\u4ee5\u8bd5\u8bd5 cv2.INTER_AREA\uff0c\u8fd9\u4fe9\u51fa\u6765\u7684\u6548\u679c\u6bd4\u8f83\u63a5\u8fd1\u3002\u8fd8\u6709\u4e00\u70b9\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u4f60\u7ed9\u7684\u539f\u56fe\u53ea\u6709 20kb \u5de6\u53f3\uff0copencv \u51fa\u6765\u7684\u56fe\u7247\u6587\u4ef6\u5927\u5c0f\u53d8\u5927\u4e86\u4e0d\u5c11\uff0c\u5e94\u8be5\u662f\u538b\u7f29\u7b97\u6cd5\u5bfc\u81f4\u7684\uff0c\u4e0a\u9762 wirte_param \u90a3\u884c\u53ef\u4ee5\u8c03\u6574\u538b\u7f29\u6bd4\u4f8b\uff0c\u6700\u9ad8 9\uff0c\u4f46\u662f\u538b\u7f29\u4e0b\u6765\u7684\u56fe\u7247\u8fd8\u662f\u6bd4\u539f\u56fe\u5927\u4e86\u4e0d\u5c11\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
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    \u8cc7\u6df1\u5927\u4f6c : ipwx <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @wzw \u5176\u5b9e\u6211\u6307\u7684\u662f\u5148 => pdf\uff0c\u7136\u540e\u7528\u522b\u7684\u8f6f\u4ef6 => png \u3002\u54c8\u54c8\u54c8 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : ipwx <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    pdf2png \u4f60\u53ef\u4ee5\u8bd5\u8bd5 imagemagick \u3002\u6211\u53cd\u6b63\u65e5\u5e38\u7528\u4e00\u4e2a\u811a\u672c\uff1a<\/p>\n

    #!\/bin\/bash
    DPI=”${DPI:-192}”
    FROM=”$1″
    DST=”$2″
    BGARGS=”$3″
    if [ “${FROM}” = “” ]; then
    echo “pdf2png from-file [to-file]”
    fi
    if [ “${DST}” = “-white” ]; then
    DST=””
    BGARGS=”white”
    fi
    if [ “${DST}” = “” ]; then
    DST=”${FROM\/.pdf\/.png}”
    fi
    if [ “${BGARGS}” != “” ]; then
    BGARGS=”-background ${BGARGS} -alpha background -alpha remove”
    fi
    convert -density “${DPI}” -strip -trim “${FROM}” -quality 100 ${BGARGS} “${DST}” <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
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    \u8cc7\u6df1\u5927\u4f6c : futou <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5c31\u51e0\u5f20\u56fe\u7684\u8bdd\uff1a\u56fe\u7247\u67e5\u770b\u5668\u7f29\u5c0f ->\u622a\u56fe\u53e6\u5b58\u4e3a <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : wzw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @ipwx #21 \u8fd8\u8981\u7ed5\u4e00\u6b21 pdf \u5440\uff0c\uff0c\uff0c\u6211\u76ee\u524d\u65b9\u6848\u9996\u9009\u56fe\u7247\u76f4\u63a5\u5904\u7406\u5427\uff0c <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : wzw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @futou #23 \u5f88\u591a\u5f88\u591a\uff0c \u5fc5\u987b\u96c6\u6210\u5230\u7cfb\u7edf\u91cc\u9762\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : futou <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @wzw \u4f60\u53d1\u7684\u539f\u56fe\u662f\u8c03\u8272\u677f\u56fe\u50cf\uff0c\u4e5f\u8bb8\u8fd9\u662f\u4f60\u5904\u7406\u7ed3\u679c\u4e0d\u597d\u7684\u539f\u56e0\uff1f\u6211\u8bd5\u4e86\u8bd5 matlab \u7684 imresize\uff0c\u4e0d\u653e\u5927\u770b\u7684\u8bdd\uff0c\u9ed8\u8ba4\u53c2\u6570\u7f29\u653e\u7ed3\u679c\u5c31\u975e\u5e38\u6e05\u6670\uff0c\u4f60\u4e5f\u53ef\u4ee5\u8bd5\u8bd5 scipy \u91cc\u7684 imresize\uff0c\u7ed3\u679c\u4e5f\u4e0d\u5dee\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \n
    \u8cc7\u6df1\u5927\u4f6c : ipwx <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @wzw \u5982\u679c\u4f60\u662f matplotlib \u4ea7\u751f\u7684\u56fe\uff0c\u4f60\u6307\u5b9a plt.figure(figsize=) \u5c31\u53ef\u4ee5\u63a7\u5236\u8f93\u51fa\u56fe\u50cf\u5927\u5c0f\u4e86\u3002\u6700\u597d\u628a\u4e24\u8fb9\u7a7a\u767d\u4e5f\u88c1\u4e86\uff0c\u6211\u8bb0\u5f97\u662f plt.tight_layout() \u8fd8\u662f\u5565\u3002\u3002\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : wzw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @ipwx #27 matplotlib \u4ee5\u540e\u8fd8\u6709\u4e00\u4e9b\u4e8c\u6b21\u5904\u7406\u7684\u52a8\u4f5c\uff0c \u6240\u4ee5\u8fd9\u6761\u4e0d\u9002\u7528\uff0c \u4e00\u5b9a\u8981\u591a\u6b21\u8c03\u6574\u5927\u5c0f\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : wzw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @futou #26 \u8c03\u8272\u677f\u56fe\u50cf\uff1f \u6211\u76ee\u524d\u7528\u7684\u662f matplotlib fig.savefig \u76f4\u63a5\u4fdd\u5b58\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : ipwx <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @wzw \u628a pdf \u8f93\u51fa\u5230\u4e34\u65f6\u76ee\u5f55\uff0c\u7136\u540e\u7528\u5176\u4ed6\u5de5\u5177\u8f6c\u6362\u6210 png \u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : JCZ2MkKb5S8ZX9pq <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5176\u5b9e\u4e0a\u9762\u8bf4\u7684\u51e0\u79cd\u7f29\u56fe\u7b97\u6cd5\u5e94\u8be5\u662f\u5bf9\u7684\uff0c\u7f29\u51fa\u6765\u7684\u7ebf\u6761\u65ad\u70b9\u5c31\u662f\u53d6\u6837\u7684\u95ee\u9898\u3002<\/p>\n

    img.thumbnail((long_edge_limit, long_edge_limit), Image.ANTIALIAS)<\/p>\n

    \u76f4\u63a5\u62ff\u8fd9\u53e5\u8bd5\u4e86\u8bd5\uff0c\u5bfc\u51fa\u4e3a png \u3002
    thumbnail \u662f\u9650\u5236\u957f\u8fb9\uff0c\u81ea\u52a8\u7f29\u3002\u957f\u8fb9 800 \u3002<\/p>\n

    \"\u56fe\u7247\u5c3a\u5bf8<\/p>\n

    \u63d0\u4f9b\u51e0\u4e2a\u601d\u8def\u54e6
    \u539f\u56fe\u5982\u679c\u4e0d\u662f rgb\uff0c\u800c\u662f\u7c7b\u4f3c gif \u7684 256 \u8272 pattern\uff0c\u4f1a\u5bfc\u81f4\u989c\u8272\u4e0d\u8db3\u4ece\u800c\u6389\u8272\uff0c\u8981\u5148\u8f6c\u6a21\u5f0f\u3002
    \u7f29\u56fe\u4e4b\u540e\u76f4\u63a5 show \u4e00\u4e0b\u770b\u770b\u3002
    \u7136\u540e\u518d\u5b58\u76d8\uff0c\u770b\u770b\u4f1a\u4e0d\u4f1a\u662f\u5bfc\u51fa\u683c\u5f0f\u7684\u95ee\u9898\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : jdhao <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @JCZ2MkKb5S8ZX9pq \u6709\u9053\u7406\uff0c\u4e3b\u539f\u56fe\u662f RGBA \u683c\u5f0f\u7684 PNG \u56fe\u7247\uff0c\u5e76\u4e14\u662f palette \u56fe\u50cf\uff0c\u6211\u8bd5\u4e86\u4e00\u4e0b PIL \u8bfb\u53d6\u56fe\u50cf\uff0c\u7136\u540e\u518d\u8f6c RGBA \u683c\u5f0f \uff08 palette \u56fe\u50cf\u8f6c RGBA \uff09\uff0c\u7136\u540e\u518d resize \u548c save\uff0c\u56fe\u50cf\u8d28\u91cf\u9ad8\u4e86\u5f88\u591a\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : JCZ2MkKb5S8ZX9pq <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @jdhao <\/p>\n

    \u4e00\u79cd\u53ef\u80fd\u662f\u5bfc\u5165\u540e\u683c\u5f0f\u88ab\u4fee\u6539\u8fc7\u4e86\uff0c\u8fd8\u6709\u4e00\u79cd\u53ef\u80fd\u662f\u4ee3\u7801\u51fa\u4e86\u95ee\u9898\u3002\u56e0\u4e3a\u4ed6\u51fa\u9519\u7684\u56fe\u660e\u663e\u662f nearest \u91c7\u6837\u7684\uff0c\u521a\u770b\u4e86\u4e0b\u6587\u6863\uff0c\u7248\u672c\u95ee\u9898\u597d\u50cf\u4f1a\u5f71\u54cd\u9ed8\u8ba4\u503c\u3002<\/p>\n

    If omitted, it defaults to PIL.Image.ANTIALIAS. (was PIL.Image.NEAREST prior to version 2.5.0)<\/p>\n

    \u4f46\u662f\u8003\u8651\u5230 lz \u8bd5\u4e86\u597d\u51e0\u79cd\uff0c\u6240\u4ee5\u611f\u89c9\u53ef\u80fd\u662f\u53c2\u6570\u6ca1\u8d77\u6548\u679c\uff08\u4f46\u56de\u9000\u5230\u4e86 nearest \uff09\u3002
    \u4e5f\u5c31\u662f\u8bf4\u5982\u679c lz \u7684 PIL \u662f 2.5 \u4ee5\u4e0b\u7684\uff0c\u53ef\u80fd\u662f\u53c2\u6570\u6ca1\u52a0\u5bf9\u3002\u5982\u679c\u662f\u65b0\u7248\u672c\uff0c\u90a3\u53ef\u80fd\u662f\u56fe\u672c\u8eab\u7684\u95ee\u9898\u3002\u53ef\u4ee5\u8003\u8651\u5728\u683c\u5f0f\u8f6c\u6362\u524d\u540e\u90fd\u6253\u5370\u4e00\u4e0b\u989c\u8272\u6a21\u5f0f\uff0c\u6216\u8005 png \u8f93\u51fa\u7684\u8bdd\uff0c\u5f3a\u5236\u52a0\u4e00\u6b65\u6a21\u5f0f\u8f6c\u6362\u8bd5\u8bd5\u770b\u3002<\/p>\n

    img = img.convert(‘RGBA’) <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : JCZ2MkKb5S8ZX9pq <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e0a\u9762\u662f thumbnail \u7684\uff0cresize \u7684\u5199\u5f97\u66f4\u6e05\u695a\u3002<\/p>\n

    If omitted, or if the image has mode \u201c1\u201d or \u201cP\u201d, it is set PIL.Image.NEAREST.<\/p>\n

    \u90a3\u5c31\u662f\u53bb\u67e5\u56fe\u50cf color mode \u4e86\u3002<\/p>\n

    [Image Module \u2014 Pillow (PIL Fork) 2.6.1 documentation]( https:\/\/pillow.readthedocs.io\/en\/3.0.0\/reference\/Image.html) <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : jdhao <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @JCZ2MkKb5S8ZX9pq \u55ef\uff0c\u90a3\u5c31\u89e3\u91ca\u4e86\u4e3a\u5565\u8bbe\u7f6e\u5176\u4ed6 filter \u6ca1\u6548\u679c\u4e86\uff0c\u56e0\u4e3a\u662f\u4e3b\u7684\u539f\u56fe\u7247\u662f mode \u662f P\uff0c\u6240\u4ee5\u5f3a\u5236\u4f7f\u7528 PIL.Image.NEAREST \u6765\u91c7\u6837\u7684\u3002<\/p>\n

    \u4f60\u770b\u7684\u4ed4\u7ec6\uff0c\u6211\u770b\u5230\u8fd9\u4e2a\u65f6\u5019\u6ca1\u610f\u8bc6\u5230\u662f\u56e0\u4e3a\u56fe\u50cf\u6a21\u5f0f\u95ee\u9898\uff0c\u8d5e <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : JCZ2MkKb5S8ZX9pq <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @jdhao \u7f8e\u5de5\u51fa\u8eab\uff0c\u5bf9\u8fd9\u4e2a\u6bd4\u8f83\u654f\u611f\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : wzw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @also24 #19 \u4f60\u662f\u76f4\u63a5\u7528 pillow \u5417\uff1f
    @JCZ2MkKb5S8ZX9pq #33 \u5389\u5bb3\uff0c\u4e0d\u6127\u662f\u7f8e\u5de5\u51fa\u751f\uff0c\u6211\u4eca\u5929\u8bd5\u8bd5 img = img.convert(‘RGBA’) <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    \u56fe\u7247\u5c3a\u5bf8 1200×90…<\/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\/197863"}],"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=197863"}],"version-history":[{"count":1,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/197863\/revisions"}],"predecessor-version":[{"id":197867,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/197863\/revisions\/197867"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=197863"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=197863"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=197863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}