{"id":10713,"date":"2023-12-04T23:09:38","date_gmt":"2023-12-04T15:09:38","guid":{"rendered":"http:\/\/yptk.cn\/?p=10713"},"modified":"2023-12-04T23:12:52","modified_gmt":"2023-12-04T15:12:52","slug":"%e5%9b%be%e5%83%8f%e4%b8%8e%e6%bb%a4%e6%b3%a2","status":"publish","type":"post","link":"http:\/\/yptk.cn\/index.php\/2023\/12\/04\/%e5%9b%be%e5%83%8f%e4%b8%8e%e6%bb%a4%e6%b3%a2\/","title":{"rendered":"\u56fe\u50cf\u4e0e\u6ee4\u6ce2"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u672c\u6765\u60f3\u5199\u4e00\u671f\u89e3\u8bfbJPEG\u538b\u7f29\u539f\u7406\uff0c\u7ed3\u679c\u6d89\u53ca\u5185\u5bb9\u592a\u591a\uff0c\u81ea\u5df1\u4e5f\u6ca1\u641e\u660e\u767d\u3002\u5148\u8865\u8865\u57fa\u7840\u77e5\u8bc6\u628a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u56fe\u50cf\u5176\u5b9e\u662f\u4e00\u79cd\u6ce2\uff0c\u53ef\u4ee5\u7528\u6ce2\u7684\u7b97\u6cd5\u5904\u7406\u56fe\u50cf<\/strong>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u4e3a\u4ec0\u4e48\u56fe\u50cf\u662f\u6ce2\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u9996\u5148\u6211\u4eec\u77e5\u9053\u56fe\u7247\u7531\u50cf\u7d20\u7ec4\u6210\u3002<br>\u4ee5400*400\u50cf\u7d20\uff0c\u4f4d\u6df1\u4f4d8bit\u7684\u56fe\u7247\u4e3a\u4f8b\u3002\u6bcf\u4e2a\u50cf\u7d20\u7684R\/G\/B\u901a\u9053\u7684\u7070\u5ea6\u503c\u5206\u522b\u4e3a0~255\u3002\u901a\u8fc7 <a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/API\/Canvas_API\/Tutorial\/Pixel_manipulation_with_canvas\" target=\"_blank\" rel=\"noreferrer noopener\">Canvas API<\/a> \u5c31\u53ef\u4ee5\u62ff\u5230\u8fd9\u4e9b\u503c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"400\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121301.jpg\" alt=\"\" class=\"wp-image-10728\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121301.jpg 400w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121301-300x300.jpg 300w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121301-150x150.jpg 150w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u628a\u6bcf\u4e00\u884c\u6240\u6709\u50cf\u7d20\u7684\u7ea2\u3001\u7eff\u3001\u84dd\u7684\u503c\uff0c\u4f9d\u6b21\u753b\u6210\u4e09\u6761\u66f2\u7ebf\uff0c\u5c31\u5f97\u5230\u4e86\u4e0b\u9762\u7684\u56fe\u5f62\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"880\" height=\"440\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121302.png\" alt=\"\" class=\"wp-image-10714\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121302.png 880w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121302-300x150.png 300w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121302-768x384.png 768w\" sizes=\"auto, (max-width: 880px) 100vw, 880px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u770b\u5230\uff0c\u6bcf\u6761\u66f2\u7ebf\u90fd\u5728\u4e0d\u505c\u7684\u4e0a\u4e0b\u6ce2\u52a8\u3002\u6709\u4e9b\u533a\u57df\u7684\u6ce2\u52a8\u6bd4\u8f83\u5c0f\uff0c\u6709\u4e9b\u533a\u57df\u7a81\u7136\u51fa\u73b0\u4e86\u5927\u5e45\u6ce2\u52a8\uff08\u6bd4\u5982 54 \u548c 324 \u8fd9\u4e24\u70b9\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u6bd4\u4e00\u4e0b\u56fe\u50cf\u5c31\u80fd\u53d1\u73b0\uff0c\u66f2\u7ebf\u6ce2\u52a8\u8f83\u5927\u7684\u5730\u65b9\uff0c\u4e5f\u662f\u56fe\u50cf\u51fa\u73b0\u7a81\u53d8\u7684\u5730\u65b9\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"844\" height=\"240\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121303.png\" alt=\"\" class=\"wp-image-10715\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121303.png 844w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121303-300x85.png 300w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121303-768x218.png 768w\" sizes=\"auto, (max-width: 844px) 100vw, 844px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u8bf4\u660e\u6ce2\u52a8\u4e0e\u56fe\u50cf\u662f\u7d27\u5bc6\u5173\u8054\u7684\u3002<strong>\u56fe\u50cf\u672c\u8d28\u4e0a\u5c31\u662f\u5404\u79cd\u8272\u5f69\u6ce2\u7684\u53e0\u52a0\u3002<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u9891\u7387<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7efc\u4e0a\u6240\u8ff0\uff0c\u56fe\u50cf\u5c31\u662f\u8272\u5f69\u7684\u6ce2\u52a8\uff1a\u6ce2\u52a8\u5927\uff0c\u5c31\u662f\u8272\u5f69\u6025\u5267\u53d8\u5316\uff1b\u6ce2\u52a8\u5c0f\uff0c\u5c31\u662f\u8272\u5f69\u5e73\u6ed1\u8fc7\u6e21\u3002\u56e0\u6b64\uff0c\u6ce2\u7684\u5404\u79cd\u6307\u6807\u53ef\u4ee5\u7528\u6765\u63cf\u8ff0\u56fe\u50cf\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9891\u7387\uff08frequency\uff09\u662f\u6ce2\u52a8\u5feb\u6162\u7684\u6307\u6807\uff0c\u5355\u4f4d\u65f6\u95f4\u5185\u6ce2\u52a8\u6b21\u6570\u8d8a\u591a\uff0c\u9891\u7387\u8d8a\u9ad8\uff0c\u53cd\u4e4b\u8d8a\u4f4e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><img decoding=\"async\" title=\"\" src=\"http:\/\/www.ruanyifeng.com\/blogimg\/asset\/2017\/bg2017121305.jpg\" alt=\"\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u56fe\u662f\u51fd\u6570<code>sin(\u0398)<\/code>\u7684\u56fe\u5f62\uff0c\u5728<code>2\u03c0<\/code>\u7684\u5468\u671f\u5185\u5b8c\u6210\u4e86\u4e00\u6b21\u6ce2\u52a8\uff0c\u9891\u7387\u5c31\u662f1\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"464\" height=\"157\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121304.jpg\" alt=\"\" class=\"wp-image-10716\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121304.jpg 464w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121304-300x102.jpg 300w\" sizes=\"auto, (max-width: 464px) 100vw, 464px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u56fe\u662f\u51fd\u6570<code>sin(2\u0398)<\/code>\u7684\u56fe\u5f62\uff0c\u5728<code>2\u03c0<\/code>\u7684\u5468\u671f\u5185\u5b8c\u6210\u4e86\u4e24\u6b21\u6ce2\u52a8\uff0c\u9891\u7387\u5c31\u662f2\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6240\u4ee5\uff0c<strong>\u8272\u5f69\u5267\u70c8\u53d8\u5316\u7684\u5730\u65b9\uff0c\u5c31\u662f\u56fe\u50cf\u7684\u9ad8\u9891\u533a\u57df\uff1b\u8272\u5f69\u7a33\u5b9a\u5e73\u6ed1\u7684\u5730\u65b9\uff0c\u5c31\u662f\u4f4e\u9891\u533a\u57df\u3002<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u6ee4\u6ce2\u5668<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7269\u7406\u5b66\u5bf9\u6ce2\u7684\u7814\u7a76\u5df2\u7ecf\u975e\u5e38\u6df1\u5165\uff0c\u63d0\u51fa\u4e86\u5f88\u591a\u5904\u7406\u6ce2\u7684\u65b9\u6cd5\uff0c\u5176\u4e2d\u5c31\u6709\u6ee4\u6ce2\u5668\uff08filter\uff09\uff1a\u8fc7\u6ee4\u6389\u67d0\u4e9b\u6ce2\uff0c\u4fdd\u7559\u53e6\u4e00\u4e9b\u6ce2\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u9762\u662f\u4e24\u79cd\u5e38\u89c1\u7684\u6ee4\u6ce2\u5668 \u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/baike.baidu.com\/item\/%E4%BD%8E%E9%80%9A%E6%BB%A4%E6%B3%A2\" target=\"_blank\" rel=\"noreferrer noopener\">\u4f4e\u901a\u6ee4\u6ce2\u5668<\/a>\uff08lowpass\uff09\uff1a\u51cf\u5f31\u6216\u963b\u9694\u9ad8\u9891\u4fe1\u53f7\uff0c\u4fdd\u7559\u4f4e\u9891\u4fe1\u53f7<\/li>\n\n\n\n<li><a href=\"https:\/\/baike.baidu.com\/item\/%E9%AB%98%E9%80%9A%E6%BB%A4%E6%B3%A2\" target=\"_blank\" rel=\"noreferrer noopener\">\u9ad8\u901a\u6ee4\u6ce2\u5668<\/a>\uff08highpass\uff09\uff1a\u51cf\u5f31\u6216\u963b\u9694\u4f4e\u9891\u4fe1\u53f7\uff0c\u4fdd\u7559\u9ad8\u9891\u4fe1\u53f7<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u9762\u662f\u4f4e\u901a\u6ee4\u6ce2\u7684\u4f8b\u5b50\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"694\" height=\"279\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121306.png\" alt=\"\" class=\"wp-image-10718\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121306.png 694w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121306-300x121.png 300w\" sizes=\"auto, (max-width: 694px) 100vw, 694px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u56fe\u4e2d\uff0c\u84dd\u7ebf\u662f\u539f\u59cb\u7684\u6ce2\u5f62\uff0c\u7eff\u7ebf\u662f\u4f4e\u901a\u6ee4\u6ce2<code>lowpass<\/code>\u540e\u7684\u6ce2\u5f62\u3002\u53ef\u4ee5\u770b\u5230\uff0c\u7eff\u7ebf\u7684\u6ce2\u52a8\u6bd4\u84dd\u7ebf\u5c0f\u5f88\u591a\uff0c\u975e\u5e38\u5e73\u6ed1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u9762\u662f\u9ad8\u901a\u6ee4\u6ce2\u7684\u4f8b\u5b50\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"634\" height=\"634\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121307.png\" alt=\"\" class=\"wp-image-10719\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121307.png 634w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121307-300x300.png 300w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121307-150x150.png 150w\" sizes=\"auto, (max-width: 634px) 100vw, 634px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u56fe\u4e2d\uff0c\u9ec4\u7ebf\u662f\u539f\u59cb\u7684\u6ce2\u5f62\uff0c\u84dd\u7ebf\u662f\u9ad8\u901a\u6ee4\u6ce2<code>highpass<\/code>\u540e\u7684\u6ce2\u5f62\u3002\u53ef\u4ee5\u770b\u5230\uff0c\u9ec4\u7ebf\u7684\u4e09\u4e2a\u6ce2\u5cf0\u548c\u4e24\u4e2a\u6ce2\u8c37\uff08\u4f4e\u9891\u6ce2\u52a8\uff09\uff0c\u5728\u84dd\u7ebf\u4e0a\u90fd\u6d88\u5931\u4e86\uff0c\u800c\u9ec4\u7ebf\u4e0a\u90a3\u4e9b\u5bc6\u96c6\u7684\u5c0f\u5e45\u6ce2\u52a8\uff08\u9ad8\u9891\u6ce2\u52a8\uff09\uff0c\u5219\u662f\u5168\u90e8\u88ab\u84dd\u7ebf\u4fdd\u7559\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u518d\u770b\u4e00\u4e2a<a href=\"https:\/\/stackoverflow.com\/questions\/7105962\/how-do-i-run-a-high-pass-or-low-pass-filter-on-data-points-in-r\" target=\"_blank\" rel=\"noreferrer noopener\">\u4f8b\u5b50<\/a>\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"700\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121308.png\" alt=\"\" class=\"wp-image-10720\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121308.png 700w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121308-300x300.png 300w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121308-150x150.png 150w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u56fe\u6709\u4e09\u6839\u66f2\u7ebf\uff0c\u9ec4\u7ebf\u662f\u9ad8\u9891\u6ce2\u52a8\uff0c\u7ea2\u7ebf\u662f\u4f4e\u9891\u6ce2\u52a8\u3002\u5b83\u4eec\u53ef\u4ee5\u5408\u6210\u4e3a\u4e00\u6839\u66f2\u7ebf\uff0c\u5c31\u662f\u7eff\u7ebf\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"672\" height=\"632\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121309.png\" alt=\"\" class=\"wp-image-10721\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121309.png 672w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121309-300x282.png 300w\" sizes=\"auto, (max-width: 672px) 100vw, 672px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u56fe\u4e2d\uff0c\u7eff\u7ebf\u8fdb\u884c\u4f4e\u901a\u6ee4\u6ce2\u548c\u9ad8\u901a\u6ee4\u6ce2\u540e\uff0c\u5f97\u5230\u4e24\u6839\u9ed1\u8272\u7684\u66f2\u7ebf\uff0c\u5b83\u4eec\u7684\u6ce2\u5f62\u8ddf\u539f\u59cb\u7684\u9ec4\u7ebf\u548c\u7ea2\u7ebf\u662f\u5b8c\u5168\u4e00\u81f4\u7684\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001\u56fe\u50cf\u7684\u6ee4\u6ce2<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6d4f\u89c8\u5668\u5b9e\u9645\u4e0a\u5305\u542b\u4e86\u6ee4\u6ce2\u5668\u7684\u5b9e\u73b0\uff0c\u56e0\u4e3a <a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/API\/Web_Audio_API\" target=\"_blank\" rel=\"noreferrer noopener\">Web Audio API<\/a> \u91cc\u9762\u5b9a\u4e49\u4e86<a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/API\/BiquadFilterNode\/type\" target=\"_blank\" rel=\"noreferrer noopener\">\u58f0\u6ce2\u7684\u6ee4\u6ce2<\/a>\u3002\u8fd9\u610f\u5473\u7740\u53ef\u4ee5\u901a\u8fc7\u6d4f\u89c8\u5668\uff0c\u5c06<code>lowpass<\/code>\u548c<code>highpass<\/code>\u8fd0\u7528\u4e8e\u56fe\u50cf\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>lowpass<\/code>\u4f7f\u5f97\u56fe\u50cf\u7684\u9ad8\u9891\u533a\u57df\u53d8\u6210\u4f4e\u9891\uff0c\u5373\u8272\u5f69\u53d8\u5316\u5267\u70c8\u7684\u533a\u57df\u53d8\u5f97\u5e73\u6ed1\uff0c\u4e5f\u5c31\u662f\u51fa\u73b0\u6a21\u7cca\u6548\u679c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"817\" height=\"412\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121310.jpg\" alt=\"\" class=\"wp-image-10722\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121310.jpg 817w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121310-300x151.jpg 300w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121310-768x387.jpg 768w\" sizes=\"auto, (max-width: 817px) 100vw, 817px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"634\" height=\"317\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121311.png\" alt=\"\" class=\"wp-image-10723\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121311.png 634w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121311-300x150.png 300w\" sizes=\"auto, (max-width: 634px) 100vw, 634px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u56fe\u4e2d\uff0c\u7ea2\u7ebf\u662f\u539f\u59cb\u7684\u8272\u5f69\u66f2\u7ebf\uff0c\u84dd\u7ebf\u662f\u4f4e\u901a\u6ee4\u6ce2\u540e\u7684\u66f2\u7ebf\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>highpass<\/code>\u6b63\u597d\u76f8\u53cd\uff0c\u8fc7\u6ee4\u4e86\u4f4e\u9891\uff0c\u53ea\u4fdd\u7559\u90a3\u4e9b\u53d8\u5316\u6700\u5feb\u901f\u6700\u5267\u70c8\u7684\u533a\u57df\uff0c\u4e5f\u5c31\u662f\u56fe\u50cf\u91cc\u9762\u7684\u7269\u4f53\u8fb9\u7f18\uff0c\u6240\u4ee5\u5e38\u7528\u4e8e\u8fb9\u7f18\u8bc6\u522b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"815\" height=\"410\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121312.jpg\" alt=\"\" class=\"wp-image-10724\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121312.jpg 815w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121312-300x151.jpg 300w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121312-768x386.jpg 768w\" sizes=\"auto, (max-width: 815px) 100vw, 815px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"634\" height=\"317\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121313.png\" alt=\"\" class=\"wp-image-10725\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121313.png 634w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121313-300x150.png 300w\" sizes=\"auto, (max-width: 634px) 100vw, 634px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u56fe\u4e2d\uff0c\u7ea2\u7ebf\u662f\u539f\u59cb\u7684\u8272\u5f69\u66f2\u7ebf\uff0c\u84dd\u7ebf\u662f\u9ad8\u901a\u6ee4\u6ce2\u540e\u7684\u66f2\u7ebf\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u9762\u8fd9\u4e2a<a href=\"http:\/\/fellipe.com\/demos\/lena-js\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u7f51\u5740<\/a>\uff0c\u53ef\u4ee5\u5c06\u6ee4\u6ce2\u5668\u62d6\u5230\u56fe\u50cf\u4e0a\uff0c\u4ea7\u751f\u8fc7\u6ee4\u540e\u7684\u6548\u679c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"343\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121314.jpg\" alt=\"\" class=\"wp-image-10726\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121314.jpg 700w, http:\/\/yptk.cn\/wp-content\/uploads\/2023\/12\/bg2017121314-300x147.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6d4f\u89c8\u5668\u5b9e\u73b0\u6ee4\u6ce2\u7684\u8303\u4f8b\u4ee3\u7801\uff0c\u53ef\u4ee5\u770b\u8fd9\u4e2a<a href=\"https:\/\/github.com\/rssilva\/web-audio-image-filtering\" target=\"_blank\" rel=\"noreferrer noopener\">\u4ed3\u5e93<\/a>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8f6c\u81ea\uff1ahttp:\/\/www.ruanyifeng.com\/blog\/2017\/12\/image-and-wave-filters.html<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6765\u60f3\u5199\u4e00\u671f\u89e3\u8bfbJPEG\u538b\u7f29\u539f\u7406\uff0c\u7ed3\u679c\u6d89\u53ca\u5185\u5bb9\u592a\u591a\uff0c\u81ea\u5df1\u4e5f\u6ca1\u641e\u660e\u767d\u3002\u5148\u8865\u8865\u57fa\u7840\u77e5\u8bc6\u628a\u3002 \u56fe\u50cf\u5176\u5b9e\u662f\u4e00\u79cd\u6ce2\uff0c\u53ef\u4ee5\u7528\u6ce2\u7684\u7b97\u6cd5\u5904\u7406\u56fe\u50cf\u3002 \u4e00\u3001\u4e3a\u4ec0\u4e48\u56fe\u50cf\u662f\u6ce2\uff1f \u9996\u5148\u6211\u4eec\u77e5\u9053\u56fe\u7247\u7531\u50cf\u7d20\u7ec4\u6210\u3002\u4ee5400*400\u50cf\u7d20\uff0c\u4f4d\u6df1\u4f4d8bit\u7684\u56fe\u7247\u4e3a\u4f8b\u3002\u6bcf\u4e2a\u50cf\u7d20\u7684R\/G\/B\u901a\u9053\u7684\u7070\u5ea6\u503c\u5206\u522b\u4e3a0~255\u3002\u901a\u8fc7 Canvas API \u5c31\u53ef\u4ee5\u62ff\u5230\u8fd9\u4e9b\u503c\u3002 \u5982\u679c\u628a\u6bcf\u4e00\u884c\u6240\u6709\u50cf\u7d20\u7684\u7ea2\u3001\u7eff\u3001\u84dd\u7684\u503c\uff0c\u4f9d\u6b21\u753b\u6210\u4e09\u6761\u66f2\u7ebf\uff0c\u5c31\u5f97\u5230\u4e86\u4e0b\u9762\u7684\u56fe [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[9],"tags":[452],"class_list":["post-10713","post","type-post","status-publish","format-standard","hentry","category-camera","tag-camera"],"_links":{"self":[{"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/posts\/10713","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/comments?post=10713"}],"version-history":[{"count":0,"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/posts\/10713\/revisions"}],"wp:attachment":[{"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/media?parent=10713"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/categories?post=10713"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/tags?post=10713"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}