{"id":9982,"date":"2021-06-27T17:00:33","date_gmt":"2021-06-27T09:00:33","guid":{"rendered":"https:\/\/www.zhangxinxu.com\/wordpress\/?p=9982"},"modified":"2021-06-27T17:00:33","modified_gmt":"2021-06-27T09:00:33","slug":"js-image-colorful-or-pure","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2021\/06\/js-image-colorful-or-pure\/","title":{"rendered":"JS\u5224\u65ad\u56fe\u50cf\u80cc\u666f\u989c\u8272\u5355\u4e00\u8fd8\u662f\u4e30\u5bcc"},"content":{"rendered":"<p>by <a href=\"https:\/\/www.zhangxinxu.com\/\">zhangxinxu<\/a> from <a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=9982\">https:\/\/www.zhangxinxu.com\/wordpress\/?p=9982<\/a><br \/>\n\u672c\u6587\u6b22\u8fce\u5206\u4eab\u4e0e\u805a\u5408\uff0c\u5168\u6587\u8f6c\u8f7d\u5c31\u4e0d\u5fc5\u4e86\uff0c\u5c0a\u91cd\u7248\u6743\uff0c\u5708\u5b50\u5c31\u8fd9\u4e48\u5927\uff0c\u82e5\u6025\u7528\u53ef\u4ee5\u8054\u7cfb\u6388\u6743\u3002<\/p>\n<style>.c1{color:green;}<\/style>\n<p><script>window.wxShareImgUrl = 'https:\/\/www.zhangxinxu.com\/study\/image\/share\/202106-image-similarity.png';<\/script><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/similar-cover.png\" width=\"480\" height=\"306\" alt=\"\u56fe\u50cf\u76f8\u4f3c\u5ea6\u5360\u4f4d\" class=\"alignright clip thumb size-medium\" \/><\/p>\n<p>\u6700\u8fd1\u63a5\u5230\u4e00\u4e2a\u9700\u6c42\uff0c\u56fe\u7247\u4e0a\u663e\u793a\u6587\u5b57\uff0c\u5982\u679c\u56fe\u7247\u989c\u8272\u6bd4\u8f83\u5355\u7eaf\uff0c\u5219\u76f4\u63a5\u663e\u793a\u6587\u5b57\uff0c\u5982\u679c\u56fe\u7247\u82b1\u91cc\u82b1\u54e8\u7684\uff0c\u5219\u6587\u5b57\u663e\u793a\u533a\u57df\u9ad8\u65af\u6a21\u7cca\uff0c\u8fd9\u6837\u65b9\u4fbf\u6587\u5b57\u663e\u793a\u3002<\/p>\n<p>\u8fd9\u91cc\u8bb2\u4e0b\u6211\u662f\u600e\u4e48\u5b9e\u73b0\u7684\uff0c\u6ce8\u610f\uff0c\u672c\u6587\u4ecb\u7ecd\u7684\u65b9\u6cd5\u4e00\u5b9a\u4e0d\u662f\u6700\u597d\u7684\u65b9\u6cd5\uff0c\u539f\u56e0\u89c1\u7ed3\u8bed\u3002<\/p>\n<p>\u597d\uff0c\u5f00\u59cb\u3002<\/p>\n<h3>\u4e00\u3001\u989c\u8272\u76f8\u4f3c\u5ea6\u5224\u65ad<\/h3>\n<p>\u65e0\u8bba\u662f\u6574\u4f53\u989c\u8272\u7b97\u6cd5\uff0c\u8fd8\u662f\u57fa\u4e8e\u4e3b\u8272\u5224\u65ad\uff0c\u90fd\u79bb\u4e0d\u5f00\u989c\u8272\u76f8\u4f3c\u5ea6\u7684\u5224\u65ad\uff0c\u8fd9\u4e2a\u5224\u65ad\u6709\u65f6\u5019\u4e5f\u88ab\u79f0\u4e3a\u989c\u8272\u5dee\u5f02\u5224\u65ad\uff08Color Difference\uff09\uff0c\u5e38\u89c1\u7b97\u6cd5\u6709\u4e0b\u9762\u8fd9\u51e0\u4e2a\u3002<\/p>\n<h4>1. \u7eaf\u7cb9\u7684\u989c\u8272\u8ddd\u79bb\u5224\u65ad<\/h4>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/2021-06-24_204444.png\" alt=\"rgb\u8272\u503c\u8ddd\u79bb\" width=\"398\" height=\"39\"><\/p>\n<p>\u5c31\u662f\u53d6R\u3001G\u3001B\u4e09\u4e2a\u8272\u503c\u7684\u5e73\u65b9\u5dee\u3002<\/p>\n<h4>2. \u52a0\u4e0a\u6743\u91cd<\/h4>\n<p>\u56e0\u4e3a\u4eba\u7c7b\u5bf9R\u3001G\u3001B\u4e0d\u540c\u8272\u503c\u5dee\u5f02\u7684\u611f\u53d7\u7a0b\u5ea6\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u56e0\u6b64\uff0c\u4e5f\u6709\u7684\u7b97\u6cd5\u4f1a\u901a\u8fc7\u589e\u52a0\u6216\u51cf\u5c11\u6743\u91cd\u7684\u65b9\u5f0f\u8ba1\u7b97\u989c\u8272\u7684\u76f8\u4f3c\u5ea6\uff0c\u4e00\u79cd\u505a\u6cd5\u662f\u4f7f\u75282\u30014\u30013\u6743\u91cd\u6cd5\uff0c\u5177\u4f53\u7b97\u6cd5\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/rgb-distance.svg\" width=\"296\" height=\"30\" alt=\"\u8272\u503c\u6743\u91cd\u8ddd\u79bb\u8ba1\u7b97\"><\/p>\n<h4>3. \u66f4\u590d\u6742\u7684\u6743\u91cd\u8ba1\u7b97<\/h4>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/2021-06-24_205816.png\" width=\"548\" height=\"201\" alt=\"\u590d\u6742\u6743\u91cd\u8ba1\u7b97\"><\/p>\n<p>\u6211\u5219\u662f\u4f7f\u7528\u7684\u7b2c\u4e09\u79cd\u6743\u91cd\u8ba1\u7b97\u65b9\u6cd5\u3002<\/p>\n<p>\u8be5\u65b9\u6cd5\u76f8\u5173\u4ee3\u7801\u5982\u4e0b\u6240\u793a\uff08\u5982\u679c\u8981\u517c\u5bb9IE\uff0c\u8bf7\u81ea\u884c\u8c03\u6574\u8bed\u6cd5\uff0c\u6216\u8005babel\u8f6c\u4e0b\uff09\uff1a<\/p>\n<pre>const colorDistance = function (arrRGB1, arrRGB2) {\r\n    let [r1, g1, b1] = arrRGB1;\r\n    let [r2, g2, b2] = arrRGB2;\r\n\r\n    let rmean = (r1 + r2) \/ 2;\r\n\r\n    let r = r1 - r2;\r\n    let g = g1 - g2;\r\n    let b = b1 - b2;\r\n\r\n    return Math.sqrt((2 + rmean \/ 256) * r * r  + 4 * g * g + (2 + (255 - rmean) \/ 256) * b * b);\r\n}<\/pre>\n<p>\u597d\uff0c\u73b0\u5728\u6709\u4e86\u989c\u8272\u76f8\u4f3c\u5ea6\u7b97\u6cd5\u4e86\uff0c\u90a3\u600e\u4e48\u8ba1\u7b97\u6574\u7247\u533a\u57df\u7684\u8272\u503c\u90fd\u662f\u76f8\u4f3c\u7684\u5462\u3002<\/p>\n<p>\u7b97\u6cd5\u5176\u5b9e\u5f88\u591a\uff0c\u7531\u4e8e\u6211\u4e4b\u524d\u4f7f\u7528\u8fc7color-thief\uff0c\u5c31\u662f\u53d6\u56fe\u50cf\u4e3b\u8272\u7684JS\u9879\u76ee\uff0c\u4e8e\u662f\u51b3\u5b9a\u57fa\u4e8e\u4e3b\u8272\u5224\u65ad\u6574\u7247\u533a\u57df\u7684\u8272\u503c\u662f\u5426\u662f\u76f8\u4f3c\u7684\u3002<\/p>\n<h3>\u4e8c\u3001\u4e3b\u8272\u5224\u65ad\u6cd5<\/h3>\n<p>color-thief\u7684\u9879\u76ee\u5730\u5740\u662f\uff1a<a href=\"https:\/\/github.com\/lokesh\/color-thief\" rel=\"noopener\" target=\"_blank\">https:\/\/github.com\/lokesh\/color-thief<\/a><\/p>\n<p>\u76ee\u524dStar\u6570\u91cf\u63a5\u8fd11\u4e07\u4e86\uff0c\u57fa\u672c\u4e0a\u5c31\u662f\u56fe\u50cf\u53d6\u4e3b\u8272\u6700\u4f73\u5b9e\u73b0\u4e86\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u6709\u4e0b\u56fe\u6240\u793a\u7684\u4e00\u5f20\u56fe\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/same-color01.jpg\" width=\"437\" height=\"261\" alt=\"\u76f8\u4f3c\u5ea6\u989c\u8272\u53d6\u8272\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u6211\u4eec\u53d6\u8fd9\u5f20\u56fe\u50cf\u7684\u524d4\u79cd\u989c\u8272\uff0c\u5c31\u4f1a\u6709\u5982\u4e0b\u56fe\u6240\u793a\u7684\u7ed3\u679c\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/2021-06-27_002438.png\" width=\"258\" height=\"49\" alt=\"\u53d6\u7684\u4e3b\u8272\u793a\u610f\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u6b64\u65f6\uff0c\u6211\u4eec\u53ea\u9700\u8981\u5bf9\u8fd94\u79cd\u989c\u8272\u8fdb\u884c\u76f8\u4f3c\u5ea6\u5224\u65ad\uff0c\u5982\u679c\u90fd\u975e\u5e38\u76f8\u4f3c\uff0c\u5219\u56fe\u50cf\u5c31\u53ef\u4ee5\u8ba4\u4e3a\u989c\u8272\u5355\u4e00\u3002<\/p>\n<p>\u8fd94\u4e2a\u8272\u503c\u5206\u522b\u662f\uff1a<\/p>\n<ul>\n<li>rgb(73,42,50)<\/li>\n<li>rgb(104,46,51)<\/li>\n<li>rgb(129,49,52)<\/li>\n<li>rgb(52,37,48)<\/li>\n<\/ul>\n<p>\u76f8\u4f3c\u5ea6\u8ba1\u7b97\u65b9\u6cd5\u5982\u4e0b\uff0c\u4e24\u4e24\u8ba1\u7b97\uff0c\u7136\u540e\u53d6\u5e73\u5747\u503c\uff08\u4f9d\u8d56\u4e8e\u4e0a\u9762\u51fa\u73b0\u7684<code>colorDistance()<\/code>\u65b9\u6cd5\uff09\u3002<\/p>\n<pre><span style=\"color:green;\">\/\/ \u8ba1\u7b97\u5e73\u5747\u989c\u8272\u8ddd\u79bb<\/span>\r\nlet arrLocalDominantColor = [[73,42,50], [104,46,51], [129,49,52], [52,37,48]];\r\nlet arrDistance = [];\r\narrLocalDominantColor.forEach(function (arrRGB) {\r\n    arrLocalDominantColor.forEach(function (arrRGB2) {\r\n        if (arrRGB2 != arrRGB) {\r\n            arrDistance.push(colorDistance(arrRGB, arrRGB2));\r\n        }\r\n    });\r\n});\r\n\r\n<span style=\"color:green;\">\/\/ \u6c42\u548c<\/span>\r\nlet sum = arrDistance.reduce(function (prev, curv) {\r\n    return prev + curv;\r\n});\r\n\r\nconsole.log('\u5e73\u5747\u76f8\u4f3c\u5ea6' + Math.round(100 * sum \/ arrDistance.length) \/ 100);<\/pre>\n<p>\u8ba1\u7b97\u7ed3\u679c\u4e3a\uff1a68.45<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/2021-06-27_002646.png\" width=\"347\" height=\"161\" alt=\"\u76f8\u4f3c\u5ea6\u5e73\u5747\u503c\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u57fa\u672c\u4e0a\uff0c\u6309\u7167\u6211\u81ea\u5df1\u7684\u5b9e\u8df5\uff0c\u5e73\u5747\u76f8\u4f3c\u5ea6\u5c0f\u4e8e100\u5c31\u53ef\u4ee5\u8ba4\u4e3a\u662f\u8fd1\u4f3c\u7eaf\u8272\u4e86\u3002<\/p>\n<p>\u81f3\u6b64\uff0c\u4f3c\u4e4e\u95ee\u9898\u5df2\u7ecf\u89e3\u51b3\u4e86\uff0c\u7136\u800c\uff0c\u5e76\u6ca1\u6709\u8fd9\u4e48\u7b80\u5355\u3002<\/p>\n<p>\u6bd4\u65b9\u8bf4\u4e0b\u9762\u8fd9\u5f20\u7d20\u6750\u56fe\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/same-not-color.jpg\" width=\"518\" height=\"347\" alt=\"\u53e6\u5916\u7684\u76f8\u4f3c\u5ea6\u5224\u65ad\u56fe\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u4ece\u89c6\u89c9\u4e0a\u6765\u770b\uff0c\u5e94\u8be5\u8ba4\u4e3a\u662f\u7eaf\u8272\uff0c\u6587\u5b57\u53ef\u4ee5\u76f4\u63a5\u663e\u793a\u3002<\/p>\n<p>\u4f46\u662f\uff0c\u6700\u7ec8\u7684\u53d6\u8272\u7ed3\u679c\u5374\u4e0d\u662f\u8fd9\u6837\u7684\uff0c\u5f88\u591a\u9ad8\u4eae\u7684\u7ebf\u6761\u4f1a\u88ab\u8ba4\u4e3a\u662f\u4e00\u79cd\u91cd\u8981\u7684\u914d\u8272\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/2021-06-27_002844.png\" width=\"260\" height=\"52\" alt=\"\u53e6\u5916\u4e00\u5f20\u56fe\u7684\u4e3b\u8272\" class=\"alignnone size-medium\" \/><\/p>\n<p>4\u79cd\u989c\u8272\uff08rgb(54,56,52)\u3001rgb(166,172,124)\u3001rgb(132,136,98)\u3001rgb(122,126,112)\uff09\u7684\u76f8\u4f3c\u5ea6\u8ba1\u7b97\u503c\u7684\u5e73\u5747\u503c\u9ad8\u8fbe162.66\u3002<\/p>\n<p>\u662f\u4e00\u4e2a\u8f83\u5927\u7684\u6570\u503c\u3002<\/p>\n<p>\u5f88\u663e\u7136\uff0c\u6b64\u65f6\u5355\u7eaf\u901a\u8fc7\u4e3b\u8272\u5224\u65ad\u56fe\u50cf\u662f\u5426\u63a5\u8fd1\u7eaf\u8272\u662f\u4e0d\u5b89\u5168\u7684\u505a\u6cd5\uff0c\u90a3\u6709\u6ca1\u6709\u4ec0\u4e48\u8fdb\u4e00\u6b65\u7a81\u7834\u7684\u624b\u6bb5\u5462\uff1f<\/p>\n<p><span class=\"hidden\">\/\/zxx: \u5982\u679c\u4f60\u770b\u5230\u8fd9\u6bb5\u6587\u5b57\uff0c\u8bf4\u660e\u4f60\u73b0\u5728\u8bbf\u95ee\u662f\u4f53\u9a8c\u7cdf\u7cd5\u7684\u5783\u573e\u76d7\u7248\u7f51\u7ad9\uff0c\u4f60\u53ef\u4ee5\u8bbf\u95ee\u539f\u6587\u83b7\u5f97\u5f88\u597d\u7684\u4f53\u9a8c\uff1ahttps:\/\/www.zhangxinxu.com\/wordpress\/?p=9982\uff08\u4f5c\u8005\u5f20\u946b\u65ed\uff09<\/span><\/p>\n<h3>\u4e09\u3001\u5de7\u7528\u6d4f\u89c8\u5668\u672c\u8eab\u7b97\u6cd5<\/h3>\n<p>\u6709\u4e00\u79cd\u65b9\u6cd5\u662f4\u4e2a\u989c\u8272\u4e92\u76f8\u5bf9\u6bd4\u76f8\u4f3c\u5ea6\uff0c\u5254\u9664\u90a3\u4e2a\u548c\u5176\u4ed63\u4e2a\u8272\u503c\u5dee\u5f02\u6700\u5927\u7684\u8272\u503c\uff0c\u4f7f\u7528\u5269\u4f59\u76843\u4e2a\u503c\u8fdb\u884c\u5e73\u5747\u76f8\u4f3c\u5ea6\u8ba1\u7b97\u3002<\/p>\n<p>\u8fd9\u79cd\u7b97\u6cd5\u53ef\u4ee5\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u63d0\u9ad8\u6574\u56fe\u76f8\u4f3c\u5ea6\u7684\u5224\u65ad\u5ea6\uff0c\u4f46\u662f\u8fd8\u4e0d\u591f\u51c6\u786e\u3002<\/p>\n<p>\u8fd8\u662f\u8fd9\u5f20\u56fe\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/same-not-color.jpg\" width=\"300\" height=\"201\" alt=\"\u53e6\u5916\u7684\u76f8\u4f3c\u5ea6\u5224\u65ad\u56fe\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u5176\u56db\u4e2a\u4e3b\u8272\u662f\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/2021-06-27_002844.png\" width=\"260\" height=\"52\" alt=\"\u53e6\u5916\u4e00\u5f20\u56fe\u7684\u4e3b\u8272\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u5982\u679c\u4f7f\u7528\u4e0a\u9762\u7684\u7b97\u6cd5\uff0c\u79fb\u9664\u7684\u989c\u8272\u5c45\u7136\u662f\u5360\u636e\u6bd4\u91cd\u6700\u5927\u7684\u6df1\u8272\uff0c\u8fd9\u5c31\u6709\u4e9b\u4e0d\u5bf9\u4e86\u3002<\/p>\n<p>\u6240\u4ee5\uff0c\u6211\u6ca1\u6709\u4f7f\u7528\u4e0a\u9762\u7684\u65b9\u6cd5\uff0c\u800c\u662f\u91c7\u7528\u4e86\u4e00\u79cd\u66f4\u52a0\u5de7\u5999\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u589e\u5f3a\u989c\u8272\u76f8\u4f3c\u5ea6\u7684\u5224\u65ad\u3002<\/p>\n<h4>\u5c3a\u5bf8\u7f29\u5c0f\u7ed8\u5236\u5224\u522b\u6cd5<\/h4>\n<p>\u8fd9\u4e2a\u65b9\u6cd5\u5c31\u662f\u60f3\u529e\u6cd5\u7f29\u5c0f\u539f\u56fe\u7684\u5c3a\u5bf8\uff0c\u8fd9\u6837\uff0c\u6d4f\u89c8\u5668\u4f1a\u81ea\u52a8\u8fdb\u884c\u4e00\u5b9a\u8303\u56f4\u5185\u7684\u8272\u5f69\u878d\u5408\uff0c\u8fd9\u6837\uff0c\u56fe\u50cf\u4e2d\u5360\u6bd4\u9762\u79ef\u6bd4\u8f83\u5c0f\u7684\u5143\u7d20\u7684\u989c\u8272\u5c31\u53ef\u80fd\u4f1a\u88ab\u51b2\u6de1\uff0c\u751a\u81f3\u4e0d\u53ef\u89c1\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u62cd\u4e86\u5f20\u661f\u7a7a\u56fe\u7247\uff0c\u4e0a\u9762\u6709\u5f88\u591a\u661f\u661f\uff0c\u5982\u679c\u628a\u8fd9\u79cd\u56fe\u7247\u7f29\u5c0f\uff0c\u5219\u661f\u661f\u5c31\u4f1a\u56e0\u4e3a\u50cf\u7d20\u70b9\u4e0d\u8db3\uff0c\u76f4\u63a5\u5c31\u770b\u4e0d\u5230\u4e86\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u4e0a\u56fe\u539f\u56fe\u5c3a\u5bf8\u662f 518px * 347px\uff0c\u90a3\u6211\u5c31\u53ef\u4ee5\u628aCanvas\u753b\u5e03\u7684\u5c3a\u5bf8\u8bbe\u7f6e\u4e3a1\/13\uff0c\u628a\u56fe\u50cf\u7ed8\u5236\u4e0a\u53bb\uff0c\u4f5c\u4e3a\u53d6\u8272\u56fe\u3002<\/p>\n<pre>var canvasWidth = 518 \/ 13;\r\nvar canvasHeight = 347 \/ 13;<\/pre>\n<p>\u6b64\u65f6\u7684\u53d6\u8272\u7ed3\u679c\u662f\u8fd9\u6837\u5b50\u7684\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/2021-06-27_004045.png\" width=\"260\" height=\"57\" alt=\"\u5c3a\u5bf8\u7f29\u5c0f\u540e\u7684\u53d6\u8272\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u6b64\u65f64\u79cd\u989c\u8272\u7684\u76f8\u4f3c\u5ea6\u8ba1\u7b97\u503c\u4ec5\u4ec5\u662f25.26\uff0c\u5c31\u975e\u5e38\u7b26\u5408\u6211\u4eec\u7684\u89c6\u89c9\u611f\u53d7\u6548\u679c\u4e86\u3002<\/p>\n<p><code>\u8bf4\u660e<\/code><\/p>\n<p>\u5c3a\u5bf8\u7f29\u5c0f\u7684\u6bd4\u4f8b\u7cfb\u6570\u5efa\u8bae\u4f7f\u752813, 17, 23\u8fd9\u6837\u7684\u8d28\u6570\uff0c\u53ef\u4ee5\u5c3d\u53ef\u80fd\u5730\u89e6\u53d1\u989c\u8272\u7684\u8865\u507f\u8ba1\u7b97\uff0c\u7ed3\u679c\u4f1a\u66f4\u52a0\u51c6\u786e\u3002<\/p>\n<h3>\u56db\u3001\u6574\u7406\u4e86\u4e2aJS\u7ed9\u5927\u5bb6\u4f7f\u7528<\/h3>\n<p>\u505a\u4eba\u505a\u5230\u5e95\uff0c\u9001\u4f5b\u9001\u5230\u897f\u3002<\/p>\n<p>\u5f88\u591a\u4eba\u5bf9\u539f\u7406\u4ec0\u4e48\u7684\u5e76\u4e0d\u7279\u522b\u5173\u5fc3\uff0c\u5173\u5fc3\u7684\u66f4\u591a\u7684\u662f\u76f4\u63a5\u4e00\u4e2a\u65b9\u6cd5\u4e00\u628a\u68ad\uff0c\u6548\u679c\u5c31\u51fa\u6765\u3002<\/p>\n<p>OK\uff0c\u4e3a\u4e86\u6ee1\u8db3\u8fd9\u65b9\u9762\u7684\u9700\u6c42\uff0c\u6211\u7279\u610f\u6574\u4e86\u4e2aJS\uff0c\u53ef\u4ee5\u5224\u65ad\u56fe\u50cf\uff0c\u6216\u8005\u56fe\u50cf\u90e8\u5206\u533a\u57df\u662f\u4e0d\u662f\u5728\u89c6\u89c9\u4e0a\u63a5\u8fd1\u7eaf\u8272\u3002<\/p>\n<p>\u9879\u76ee\u5730\u5740\u662f\uff1a<a href=\"https:\/\/gitee.com\/zhangxinxu\/image-similarity\" rel=\"noopener\" target=\"_blank\">https:\/\/gitee.com\/zhangxinxu\/image-similarity<\/a><\/p>\n<p>\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u6211\u7684gitee\u8d26\u6237\u3002<\/p>\n<p>\u5176\u4e2d\u7684<a href=\"https:\/\/gitee.com\/zhangxinxu\/image-similarity\/blob\/master\/image-similarity.js\" rel=\"noopener\" target=\"_blank\">image-similarity.js<\/a>\u5c31\u662f\u5f15\u7528\u5c31\u80fd\u6709\u7ed3\u679c\u7684JS\u4e86\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/2021-06-27_154350.png\" width=\"481\" height=\"505\" alt=\"JS\u6587\u4ef6\u5730\u5740\u793a\u610f\" class=\"alignnone size-medium\" \/><\/p>\n<h4>\u4f7f\u7528\u8bf4\u660e<\/h4>\n<p>image-similarity.js\u7684\u6267\u884c\u4f9d\u8d56\u4e8e color-thief.js\uff0c\u672c\u9879\u76ee\u4e2d\u7684 color-thief.js \u505a\u8fc7\u4e00\u70b9\u81ea\u5b9a\u4e49\uff0c\u4f7f\u5176\u652f\u6301\u90e8\u5206\u533a\u57df\u53d6\u8272\u7684\u9009\u62e9\uff0c\u4f7f\u7528\u539f\u9879\u76eeJS\u53ef\u80fd\u4f1a\u6ca1\u6709\u6548\u679c\u3002<\/p>\n<p>&#x000A;<\/p>\n<p>\u4f7f\u7528\u793a\u610f\uff1a<\/p>\n<p>&#x000A;<\/p>\n<div class=\"white\">\n<div class=\"highlight\">\n<pre><span id=\"LC1\" class=\"line\"><span class=\"nt\">&lt;script <\/span><span class=\"na\">src=<\/span><span>\".\/color-thief.js\"<\/span><span class=\"nt\">&gt;&lt;\/script&gt;<\/span><\/span>&#x000A;<span id=\"LC2\" class=\"line\"><span class=\"nt\">&lt;script <\/span><span class=\"na\">src=<\/span><span>\".\/image-similarity.js\"<\/span><span class=\"nt\">&gt;&lt;\/script&gt;<\/span><\/span><\/pre>\n<\/div>\n<\/div>\n<p>&#x000A;<\/p>\n<p>\u5168\u5c40\u66b4\u9732\u4e862\u4e2a\u65b9\u6cd5\uff0c\u4e00\u4e2a\u662f <code>imageSimilarityValue()<\/code> \u65b9\u6cd5\uff0c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p>&#x000A;<\/p>\n<div class=\"white\">\n<div class=\"highlight\">\n<pre><span id=\"LC1\" class=\"line\"><span class=\"nx\">imageSimilarityValue<\/span><span class=\"p\">(<\/span><span class=\"nx\">src<\/span><span class=\"p\">,<\/span> <span class=\"nx\">bounding<\/span><span class=\"p\">)<\/span><\/span><\/pre>\n<\/div>\n<\/div>\n<p>&#x000A;<\/p>\n<p>\u5176\u4e2d\uff1a&#x000A;<code>src<\/code> \u662f\u4efb\u610f\u683c\u5f0f\u7684\u56fe\u50cf\u5730\u5740\u3002&#x000A;<code>bounding<\/code> \u662f\u56fe\u50cf\u4e0a\u5c40\u90e8\u533a\u57df\u7684\u5c3a\u5bf8\u8bbe\u7f6e\uff0c\u683c\u5f0f\u662f\u6570\u7ec4\uff0c\u9700\u89814\u4e2a\u6570\u7ec4\u9879\uff0c\u90fd\u662f\u6570\u503c\uff0c\u5206\u522b\u8868\u793a\u5750\u6807\u548c\u5bbd\u9ad8\uff0c\u4f8b\u5982 <code>[10, 10, 300, 100]<\/code> \u8868\u793a\u5224\u65ad\u539f\u59cb\u56fe\u50cf\u5de6\u4e0a\u89d2\u5750\u6807\u662f 10,10\uff0c\u5bbd\u9ad8\u662f 300&#215;100 \u7684\u77e9\u5f62\u533a\u57df\u7684\u89c6\u89c9\u8272\u5f69\u662f\u5426\u4e30\u5bcc\u3002<\/p>\n<p>&#x000A;<\/p>\n<p>\u8fd4\u56de\u503c\u662f\u4e2aPromise\uff0c\u901a\u5e38\u4f7f\u7528\u793a\u610f\u3002<\/p>\n<p>&#x000A;<\/p>\n<div class=\"white\">\n<div class=\"highlight\">\n<pre><span id=\"LC1\" class=\"line\"><span class=\"nx\">imageSimilarityValue<\/span><span class=\"p\">(<\/span><span class=\"nx\">src<\/span><span class=\"p\">,<\/span> <span class=\"nx\">bounding<\/span><span class=\"p\">).<\/span><span class=\"nx\">then<\/span><span class=\"p\">(<\/span><span class=\"nx\">result<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span><\/span>&#x000A;<span id=\"LC2\" class=\"line\">    <span class=\"c1\">\/\/ result<\/span><\/span>&#x000A;<span id=\"LC3\" class=\"line\"><span class=\"p\">});<\/span><\/span><\/pre>\n<\/div>\n<\/div>\n<p>&#x000A;<\/p>\n<p>\u5176\u4e2d <code>result<\/code> \u662f\u4e2a\u5bf9\u8c61\uff0c\u683c\u5f0f\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p>&#x000A;<\/p>\n<div class=\"white\">\n<div class=\"highlight\">\n<pre><span id=\"LC1\" class=\"line\"><span class=\"p\">{<\/span><\/span>&#x000A;<span id=\"LC2\" class=\"line\">    <span class=\"nl\">colors<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span><span class=\"dl\">'<\/span><span class=\"s1\">rgb(0,0,0)<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"p\">...],<\/span><\/span>&#x000A;<span id=\"LC3\" class=\"line\">    <span class=\"nx\">similarity<\/span><span class=\"p\">:<\/span> <span class=\"mi\">0<\/span><span class=\"o\">-<\/span><span class=\"mi\">255<\/span><\/span>&#x000A;<span id=\"LC4\" class=\"line\"><span class=\"p\">}<\/span><\/span><\/pre>\n<\/div>\n<\/div>\n<p>&#x000A;<\/p>\n<p><code>colors<\/code> \u662f\u56fe\u50cf\u9650\u5236\u5728\u7279\u5b9a\u5c3a\u5bf8\u540e\u9009\u53d6\u76844\u4e2a\u4e3b\u8981\u989c\u8272\uff0c<code>similarity<\/code>\u662f\u8fd9\u4e9b\u989c\u8272\u7684\u5e73\u5747\u76f8\u4f3c\u5ea6\u503c\u3002<\/p>\n<p>&#x000A;<\/p>\n<p>\u7b2c\u4e8c\u4e2a\u65b9\u6cd5\u662f<code>imageSimilarity()<\/code>\u65b9\u6cd5\uff0c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p>&#x000A;<\/p>\n<div class=\"white\">\n<div class=\"highlight\">\n<pre><span id=\"LC1\" class=\"line\"><span class=\"nx\">imageSimilarity<\/span><span class=\"p\">(<\/span><span class=\"nx\">src<\/span><span class=\"p\">,<\/span> <span class=\"nx\">bounding<\/span><span class=\"p\">).<\/span><span class=\"nx\">then<\/span><span class=\"p\">(<\/span><span class=\"nx\">similarity<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span><\/span>&#x000A;<span id=\"LC2\" class=\"line\">    <span class=\"c1\">\/\/ similarity\u662f\u6570\u503c<\/span><\/span>&#x000A;<span id=\"LC3\" class=\"line\"><span class=\"p\">});<\/span><\/span><\/pre>\n<\/div>\n<\/div>\n<p>&#x000A;<\/p>\n<p>\u8fd9\u91cc\u7684 <code>similarity<\/code> \u662f\u6574\u6570\u503c\uff0c\u8303\u56f4\u4ece0-5\uff0c\u5206\u522b\u8868\u793a\u76f8\u4f3c\u7684\u7a0b\u5ea6\uff0c\u503c\u8d8a\u5c0f\u5219\u8d8a\u76f8\u4f3c\u3002<\/p>\n<p>&#x000A;<\/p>\n<p>\u8fd9\u662f\u5f53\u524dJS\u9879\u76ee\u5185\u7f6e\u7684\u89c4\u5219\uff1a<\/p>\n<p>&#x000A;<\/p>\n<div class=\"white\">\n<div class=\"highlight\">\n<pre><span id=\"LC1\" class=\"line\"><span class=\"c1\">\/\/ 0 \u6781\u5ea6\u76f8\u4f3c<\/span><\/span>&#x000A;<span id=\"LC2\" class=\"line\"><span class=\"c1\">\/\/ 1 \u76f8\u4f3c<\/span><\/span>&#x000A;<span id=\"LC3\" class=\"line\"><span class=\"c1\">\/\/ 2 \u4e0d\u592a\u76f8\u4f3c<\/span><\/span>&#x000A;<span id=\"LC4\" class=\"line\"><span class=\"c1\">\/\/ 3 \u4e0d\u76f8\u4f3c<\/span><\/span>&#x000A;<span id=\"LC5\" class=\"line\"><span class=\"c1\">\/\/ 4 \u5dee\u5f02\u8f83\u5927<\/span><\/span><\/pre>\n<\/div>\n<\/div>\n<p>&#x000A;<\/p>\n<p><code>imageSimilarity()<\/code> \u65b9\u6cd5\u5e95\u5c42\u4f9d\u8d56\u7684\u5c31\u662f <code>imageSimilarityValue()<\/code> \u65b9\u6cd5\uff0c\u8fd9\u91cc\u7684 <code>similarity<\/code> \u5176\u5b9e\u5c31\u662f\u628a <code>imageSimilarityValue()<\/code> \u65b9\u6cd5\u4e2d\u8fd4\u56de\u7684 <code>similarity<\/code> \u503c\u548c 50 \u76f8\u5904\u53d6\u4e86\u4e2a\u6574\u3002<\/p>\n<p>&#x000A;<\/p>\n<p>\u4e3a\u4ec0\u4e48\u53d650\uff1f\u5168\u662f\u6211\u81ea\u5df1\u7684\u611f\u89c9\uff0c\u6240\u4ee5\uff0c\u8fd9\u4e2a\u76f8\u4f3c\u5ea6\u7684\u9608\u503c\u9009\u62e9\u53ef\u80fd\u662f\u4e0d\u51c6\u786e\u7684\uff0c\u5927\u5bb6\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u5b9e\u9645\u9700\u6c42\u8fdb\u884c\u8c03\u6574\u3002<\/p>\n<h4>demo\u793a\u610f<\/h4>\n<p>\u505a\u4e862\u4e2ademo\u6f14\u793a\u9875\u9762\uff0c\u7ed9\u5927\u5bb6\u770b\u770b\u6548\u679c\u3002<\/p>\n<p>\u9996\u5148\u662f\u6574\u4f53\u56fe\u50cf\u5224\u65ad\u662f\u4e0d\u662f\u89c6\u89c9\u4e0a\u63a5\u8fd1\u7eaf\u8272\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202106\/file-image-similarity-demo.php\" rel=\"noopener\" target=\"_blank\">\u9009\u62e9\u56fe\u7247\u5224\u65ad\u662f\u5426\u63a5\u8fd1\u7eaf\u8272demo<\/a><\/p>\n<p>\u70b9\u51fb\u6587\u4ef6\u9009\u62e9\u6846\uff0c\u9009\u62e9\u4efb\u610f\u7684\u56fe\u50cf\uff0c\u5c31\u53ef\u4ee5\u770b\u5230\u5224\u65ad\u7ed3\u679c\u4e86\uff0c\u4f8b\u5982\u4e0b\u9762\u4e00\u4e9b\u7ed3\u679c\u622a\u56fe\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/2021-06-27_162302.png\" width=\"480\" height=\"318\" alt=\"\u989c\u8272\u76f8\u4f3c\" class=\"alignnone size-medium\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/2021-06-27_162329.png\" width=\"509\" height=\"451\" alt=\"\u670d\u9970\u8272\u5f69\" class=\"alignnone size-medium\" \/><\/p>\n<p>image-similarity.js\u8fd8\u652f\u6301\u5224\u65ad\u56fe\u7247\u5c40\u90e8\u533a\u57df\u7684\u989c\u8272\u662f\u5426\u89c6\u89c9\u76f8\u4f3c\u5ea6\u6bd4\u8f83\u9ad8\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202106\/image-similarity-part-area-demo.php\" rel=\"noopener\" target=\"_blank\">\u56fe\u7247\u90e8\u5206\u533a\u57df\u989c\u8272\u662f\u5426\u8fd1\u4f3cdemo<\/a><\/p>\n<p>\u5927\u5bb6\u53ef\u4ee5\u62d6\u62fd\u56fe\u7247\u4e0a\u7684\u9ec4\u8272\u6846\u6846\uff0c\u53ef\u4ee5\u770b\u770b\u5bf9\u5e94\u9762\u79ef\u5185\u5bb9\u548c\u6700\u540e\u7684\u5bf9\u6bd4\u7ed3\u679c\u662f\u5426\u63a5\u8fd1\u3002<\/p>\n<p>\u4e0b\u9762\u51e0\u5f20\u56fe\u662f\u6548\u679c\u793a\u610f\uff08\u70b9\u51fb\u56fe\u7247\u53ef\u4ee5\u5207\u6362\u7d20\u6750\uff09\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202106\/2021-06-27_163254.png\" width=\"728\" height=\"346\" alt=\"\u76f8\u4f3c\u5ea6\u5224\u65ad\u622a\u56fe\" class=\"alignnone size-medium\" 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