{"id":437,"date":"2024-08-01T09:40:47","date_gmt":"2024-08-01T01:40:47","guid":{"rendered":"https:\/\/thereisno.top:4430\/?p=437"},"modified":"2024-08-01T09:40:48","modified_gmt":"2024-08-01T01:40:48","slug":"%e5%a6%82%e4%bd%95%ef%bc%9a%e4%bd%bf%e7%94%a8%e9%a2%9c%e8%89%b2%e7%9f%a9%e9%98%b5%e5%af%b9%e5%8d%95%e8%89%b2%e8%bf%9b%e8%a1%8c%e5%8f%98%e6%8d%a2","status":"publish","type":"post","link":"https:\/\/thereisno.top\/?p=437","title":{"rendered":"\u5982\u4f55\uff1a\u4f7f\u7528\u989c\u8272\u77e9\u9635\u5bf9\u5355\u8272\u8fdb\u884c\u53d8\u6362"},"content":{"rendered":"\n

GDI+ \u63d0\u4f9b\u7528\u4e8e\u5b58\u50a8\u548c\u64cd\u4f5c\u56fe\u50cf\u7684 Image<\/a> \u548c Bitmap<\/a> \u7c7b\u3002 Image<\/a> \u548c Bitmap<\/a> \u5bf9\u8c61\u7528\u4e00\u4e2a 32 \u4f4d\u6570\u5b57\u5b58\u50a8\u6bcf\u4e2a\u50cf\u7d20\u7684\u989c\u8272\uff1a\u7ea2\u3001\u7eff\u3001\u84dd\u548c Alpha \u5404 8 \u4f4d\u3002 \u8fd9\u56db\u4e2a\u5206\u91cf\u7684\u503c\u90fd\u662f 0 \u5230 255\uff0c\u5176\u4e2d 0 \u8868\u793a\u6ca1\u6709\u4eae\u5ea6\uff0c255 \u8868\u793a\u6700\u5927\u4eae\u5ea6\u3002 alpha \u5206\u91cf\u6307\u5b9a\u989c\u8272\u7684\u900f\u660e\u5ea6\uff1a0 \u8868\u793a\u5b8c\u5168\u900f\u660e\uff0c255 \u8868\u793a\u5b8c\u5168\u4e0d\u900f\u660e\u3002<\/p>\n\n\n\n

\u989c\u8272\u77e2\u91cf\u91c7\u7528 4 \u5143\u7ec4\u5f62\u5f0f\uff08\u7ea2\u8272\u3001\u7eff\u8272\u3001\u84dd\u8272\u3001alpha\uff09\u3002 \u4f8b\u5982\uff0c\u989c\u8272\u77e2\u91cf (0, 255, 0, 255) \u8868\u793a\u4e00\u79cd\u6ca1\u6709\u7ea2\u8272\u548c\u84dd\u8272\u4f46\u7eff\u8272\u8fbe\u5230\u6700\u5927\u4eae\u5ea6\u7684\u4e0d\u900f\u660e\u989c\u8272\u3002<\/p>\n\n\n\n

\u8868\u793a\u989c\u8272\u7684\u53e6\u4e00\u79cd\u60ef\u4f8b\u662f\u7528\u6570\u5b57 1 \u8868\u793a\u4eae\u5ea6\u8fbe\u5230\u6700\u5927\u3002 \u901a\u8fc7\u4f7f\u7528\u8fd9\u79cd\u7ea6\u5b9a\uff0c\u4e0a\u4e00\u6bb5\u4e2d\u63cf\u8ff0\u7684\u989c\u8272\u5c06\u53ef\u4ee5\u7531\u77e2\u91cf (0, 1, 0, 1) \u8868\u793a\u3002 \u5728\u6267\u884c\u989c\u8272\u53d8\u6362\u65f6\uff0cGDI+ \u9075\u5faa\u4f7f\u7528 1 \u4e3a\u6700\u5927\u4eae\u5ea6\u7684\u60ef\u4f8b\u3002<\/p>\n\n\n\n

\u53ef\u901a\u8fc7\u7528 4\u00d74 \u77e9\u9635\u4e58\u4ee5\u8fd9\u4e9b\u989c\u8272\u77e2\u91cf\u5c06\u7ebf\u6027\u53d8\u6362\uff08\u65cb\u8f6c\u548c\u7f29\u653e\u7b49\uff09\u5e94\u7528\u5230\u989c\u8272\u77e2\u91cf\u4e2d\u3002 \u4f46\u662f\uff0c\u60a8\u4e0d\u80fd\u4f7f\u7528 4\u00d74 \u77e9\u9635\u8fdb\u884c\u5e73\u79fb\uff08\u975e\u7ebf\u6027\uff09\u3002 \u5982\u679c\u5728\u6bcf\u4e2a\u989c\u8272\u77e2\u91cf\u4e2d\u518d\u6dfb\u52a0\u4e00\u4e2a\u865a\u62df\u7684\u7b2c 5 \u5750\u6807\uff08\u4f8b\u5982\uff0c\u6570\u5b57 1\uff09\uff0c\u5219\u53ef\u4f7f\u7528 5\u00d75 \u77e9\u9635\u5e94\u7528\u4efb\u4f55\u7ec4\u5408\u5f62\u5f0f\u7684\u7ebf\u6027\u53d8\u6362\u548c\u5e73\u79fb\u3002 \u7531\u7ebf\u6027\u53d8\u6362\u7ec4\u6210\u7684\u540e\u8ddf\u5e73\u79fb\u7684\u53d8\u6362\u79f0\u4e3a\u4eff\u5c04\u53d8\u6362\u3002<\/p>\n\n\n\n

\u4f8b\u5982\uff0c\u5047\u8bbe\u60a8\u5e0c\u671b\u4ece\u989c\u8272 (0.2, 0.0, 0.4, 1.0) \u5f00\u59cb\u5e76\u5e94\u7528\u4e0b\u9762\u7684\u53d8\u6362\uff1a<\/p>\n\n\n\n

    \n
  1. \u5c06\u7ea2\u8272\u5206\u91cf\u4e58\u4ee5 2\u3002<\/li>\n\n\n\n
  2. \u5c06 0.2 \u6dfb\u52a0\u5230\u7ea2\u8272\u3001\u7eff\u8272\u548c\u84dd\u8272\u5206\u91cf\u4e2d\u3002<\/li>\n<\/ol>\n\n\n\n

    \u4e0b\u9762\u7684\u77e9\u9635\u4e58\u6cd5\u5c06\u6309\u7167\u5217\u51fa\u7684\u987a\u5e8f\u8fdb\u884c\u8fd9\u5bf9\u53d8\u6362\u3002<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    \u989c\u8272\u77e9\u9635\u7684\u5143\u7d20\u6309\u7167\u5148\u884c\u540e\u5217\uff08\u4ece 0 \u5f00\u59cb\uff09\u7684\u987a\u5e8f\u8fdb\u884c\u7d22\u5f15\u3002 \u4f8b\u5982\uff0c\u77e9\u9635 M \u7684\u7b2c\u4e94\u884c\u7b2c\u4e09\u5217\u7531 M[4][2] \u8868\u793a\u3002<\/p>\n\n\n\n

    5\u00d75 \u5355\u4f4d\u77e9\u9635\uff08\u5728\u4e0b\u9762\u7684\u63d2\u56fe\u4e2d\u663e\u793a\uff09\u5728\u5bf9\u89d2\u7ebf\u4e0a\u4e3a 1\uff0c\u5728\u5176\u4ed6\u4efb\u4f55\u5730\u65b9\u4e3a 0\u3002 \u5982\u679c\u7528\u5355\u4f4d\u77e9\u9635\u4e58\u4ee5\u989c\u8272\u77e2\u91cf\uff0c\u5219\u989c\u8272\u77e2\u91cf\u4e0d\u4f1a\u53d1\u751f\u6539\u53d8\u3002 \u5f62\u6210\u989c\u8272\u53d8\u6362\u77e9\u9635\u7684\u4e00\u79cd\u7b80\u4fbf\u65b9\u6cd5\u662f\u4ece\u5355\u4f4d\u77e9\u9635\u5f00\u59cb\uff0c\u7136\u540e\u8fdb\u884c\u8f83\u5c0f\u7684\u6539\u52a8\u4ee5\u4ea7\u751f\u6240\u9700\u7684\u53d8\u6362\u3002<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    \u6709\u5173\u77e9\u9635\u548c\u53d8\u6362\u7684\u66f4\u8be6\u7ec6\u7684\u8ba8\u8bba\uff0c\u8bf7\u53c2\u89c1\u5750\u6807\u7cfb\u7edf\u548c\u53d8\u5f62<\/a>\u3002<\/p>\n\n\n\n

    \u793a\u4f8b<\/strong><\/p>\n\n\n\n

    \u4e0b\u9762\u7684\u793a\u4f8b\u91c7\u7528\u4e00\u4e2a\u4f7f\u7528\u4e00\u79cd\u989c\u8272 (0.2, 0.0, 0.4, 1.0) \u7684\u56fe\u50cf\uff0c\u5e76\u5e94\u7528\u4e0a\u4e00\u6bb5\u4e2d\u63cf\u8ff0\u7684\u53d8\u6362\u3002<\/p>\n\n\n\n

    \u4e0b\u9762\u7684\u63d2\u56fe\u5728\u5de6\u4fa7\u663e\u793a\u539f\u6765\u7684\u56fe\u50cf\uff0c\u5728\u53f3\u4fa7\u663e\u793a\u53d8\u6362\u540e\u7684\u56fe\u50cf\u3002<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    \u4e0b\u9762\u793a\u4f8b\u4e2d\u7684\u4ee3\u7801\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\u8fdb\u884c\u91cd\u65b0\u7740\u8272\uff1a<\/p>\n\n\n\n

      \n
    1. \u521d\u59cb\u5316 ColorMatrix<\/a> \u5bf9\u8c61\u3002<\/li>\n\n\n\n
    2. \u521b\u5efa\u4e00\u4e2a ImageAttributes<\/a> \u5bf9\u8c61\uff0c\u5e76\u5c06 ColorMatrix<\/a> \u5bf9\u8c61\u4f20\u9012\u7ed9 ImageAttributes<\/a> \u5bf9\u8c61\u7684 SetColorMatrix<\/a> \u65b9\u6cd5\u3002<\/li>\n\n\n\n
    3. \u5c06 ImageAttributes<\/a> \u5bf9\u8c61\u4f20\u9012\u7ed9 Graphics<\/a> \u5bf9\u8c61\u7684 DrawImage<\/a> \u65b9\u6cd5\u3002<\/li>\n<\/ol>\n\n\n\n

      C#<\/p>\n\n\n\n

      VB<\/a><\/p>\n\n\n\n

      Image image = new Bitmap(“InputColor.bmp”);
      ImageAttributes imageAttributes = new ImageAttributes();
      int width = image.Width;
      int height = image.Height;<\/p>\n\n\n\n

      float[][] colorMatrixElements = {
         new float[] {2,  0,  0,  0, 0},        \/\/ red scaling factor of 2
         new float[] {0,  1,  0,  0, 0},        \/\/ green scaling factor of 1
         new float[] {0,  0,  1,  0, 0},        \/\/ blue scaling factor of 1
         new float[] {0,  0,  0,  1, 0},        \/\/ alpha scaling factor of 1
         new float[] {.2f, .2f, .2f, 0, 1}};    \/\/ three translations of 0.2<\/p>\n\n\n\n

      ColorMatrix colorMatrix = new ColorMatrix(colorMatrixElements);<\/p>\n\n\n\n

      imageAttributes.SetColorMatrix(
         colorMatrix,
         ColorMatrixFlag.Default,
         ColorAdjustType.Bitmap);<\/p>\n\n\n\n

      e.Graphics.DrawImage(image, 10, 10);<\/p>\n\n\n\n

      e.Graphics.DrawImage(
         image,
         new Rectangle(120, 10, width, height),  \/\/ destination rectangle
         0, 0,        \/\/ upper-left corner of source rectangle
         width,       \/\/ width of source rectangle
         height,      \/\/ height of source rectangle
         GraphicsUnit.Pixel,
         imageAttributes);<\/p>\n\n\n\n

      \u7f16\u8bd1\u4ee3\u7801<\/strong><\/p>\n\n\n\n

      \u524d\u9762\u7684\u793a\u4f8b\u662f\u4e3a\u4f7f\u7528 Windows \u7a97\u4f53\u800c\u8bbe\u8ba1\u7684\uff0c\u5b83\u9700\u8981 Paint<\/a> \u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u7684\u53c2\u6570 PaintEventArgs<\/a>e<\/em>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

      GDI+ \u63d0\u4f9b\u7528\u4e8e\u5b58\u50a8\u548c\u64cd\u4f5c\u56fe\u50cf\u7684 Image \u548c Bitmap \u7c7b\u3002 Image \u548c Bitmap \u5bf9\u8c61\u7528\u4e00 … <\/p>\n

      \u7ee7\u7eed\u9605\u8bfb\u201c\u5982\u4f55\uff1a\u4f7f\u7528\u989c\u8272\u77e9\u9635\u5bf9\u5355\u8272\u8fdb\u884c\u53d8\u6362\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[91],"tags":[90],"class_list":["post-437","post","type-post","status-publish","format-standard","hentry","category-91","tag-90"],"_links":{"self":[{"href":"https:\/\/thereisno.top\/index.php?rest_route=\/wp\/v2\/posts\/437","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thereisno.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/thereisno.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/thereisno.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/thereisno.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=437"}],"version-history":[{"count":1,"href":"https:\/\/thereisno.top\/index.php?rest_route=\/wp\/v2\/posts\/437\/revisions"}],"predecessor-version":[{"id":441,"href":"https:\/\/thereisno.top\/index.php?rest_route=\/wp\/v2\/posts\/437\/revisions\/441"}],"wp:attachment":[{"href":"https:\/\/thereisno.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/thereisno.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/thereisno.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}