{"id":282,"date":"2025-05-29T11:00:04","date_gmt":"2025-06-05T03:19:03","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=282"},"modified":"2025-06-05T11:00:04","modified_gmt":"2025-06-05T03:19:03","slug":"swift-cicolorkernel-%e9%a1%8f%e8%89%b2%e9%81%8e%e6%bf%be-%e7%b6%a0%e5%b9%95-cicolorkernel-replacegraykernel","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/swift-cicolorkernel-%e9%a1%8f%e8%89%b2%e9%81%8e%e6%bf%be-%e7%b6%a0%e5%b9%95-cicolorkernel-replacegraykernel\/","title":{"rendered":"Swift 2025 \u7a0b\u5f0f\u6559\u5b78\uff1a\u4f7f\u7528 CIColorKernel \u9032\u884c\u984f\u8272\u904e\u6ffe"},"content":{"rendered":"

“`html<\/p>\n

Swift 2025 \u7a0b\u5f0f\u6559\u5b78\uff1aCIColorKernel \u984f\u8272\u904e\u6ffe<\/h2>\n

\u904e\u6ffe\u984f\u8272<\/h3>\n

\u5728\u672c\u6559\u5b78\u4e2d\uff0c\u6211\u5011\u5c07\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528 CIColorKernel<\/code> \u4f86\u904e\u6ffe\u984f\u8272\u3002\u9019\u500b\u65b9\u6cd5\u53ef\u4ee5\u7528\u65bc\u7da0\u5e55\u6548\u679c\u6216\u5176\u4ed6\u9700\u8981\u984f\u8272\u8655\u7406\u7684\u61c9\u7528\u3002<\/p>\n

\u4ee5\u4e0b\u4ee3\u78bc\u5c07\u5716\u7247\u4e2d RGB \u503c\u5c0f\u65bc 0.2 \u7684\u984f\u8272\u6539\u70ba\u9ed1\u8272\uff0c\u5176\u9918\u984f\u8272\u6539\u70ba\u767d\u8272\u3002<\/p>\n

\"\u984f\u8272\u904e\u6ffe\u793a\u4f8b\"<\/p>\n

kernel vec4 thresholdFilter(__sample textureColor) {\n    if (textureColor.r < 0.2 && textureColor.g < 0.2 && textureColor.b < 0.2) {\n        textureColor.rgb = vec3(0.0, 0.0, 0.0);\n    } else {\n        textureColor.rgb = vec3(1.0, 1.0, 1.0);\n    }\n    return textureColor;\n}\n<\/code><\/pre>\n
\u64f4\u5c55 UIImage \u7684\u984f\u8272\u904e\u6ffe\u529f\u80fd<\/h3>\n
\u6211\u5011\u5c07\u70ba UIImage<\/code> \u6dfb\u52a0\u4e00\u500b\u64f4\u5c55\uff0c\u5be6\u73fe\u81ea\u5b9a\u7fa9\u7684\u984f\u8272\u904e\u6ffe\u529f\u80fd\u3002<\/p>\n
extension UIImage {\n    \/\/\/ \u61c9\u7528\u81ea\u5b9a\u7fa9\u7684\u984f\u8272\u904e\u6ffe\n    func applyCustomCIFilter() -> UIImage {\n        guard let ciInputImage = CIImage(image: self) else { return UIImage() }\n        \n        let replaceGrayKernel = CIColorKernel(source:\n            \"\"\"\n            kernel vec4 thresholdFilter(__sample textureColor) {\n                if (textureColor.r < 0.2 && textureColor.g < 0.2 && textureColor.b < 0.2) {\n                    textureColor.rgb = vec3(0.0, 0.0, 0.0);\n                } else {\n                    textureColor.rgb = vec3(1.0, 1.0, 1.0);\n                }\n                return textureColor;\n            }\n            \"\"\"\n        )\n        \n        let ciImageFiltered = replaceGrayKernel?.apply(\n            extent: ciInputImage.extent,\n            arguments: [ciInputImage])\n\n        return UIImage(ciImage: ciImageFiltered!)\n    }\n}\n<\/code><\/pre>\n
\u8b49\u4ef6\u904e\u6ffe\u7684\u61c9\u7528\u6848\u4f8b<\/h3>\n
\u9019\u7a2e\u984f\u8272\u904e\u6ffe\u6280\u8853\u7279\u5225\u9069\u5408\u65bc\u81ea\u52d5\u8b58\u5225\uff08OCR\uff09\u7cfb\u7d71\uff0c\u80fd\u5920\u66f4\u597d\u5730\u8655\u7406\u548c\u8b58\u5225\u6587\u672c\u548c\u5716\u6848\u3002<\/p>\n
\"\u8b49\u4ef6\u904e\u6ffe\u793a\u4f8b\"<\/p>\n
\u5176\u4ed6\u61c9\u7528\u8207\u6700\u4f73\u5be6\u8e10<\/h3>\n
\u9664\u4e86\u7528\u65bc\u7da0\u5e55\u548cOCR\uff0c\u9019\u7a2e\u984f\u8272\u904e\u6ffe\u6280\u8853\u9084\u53ef\u4ee5\u61c9\u7528\u65bc\u5275\u5efa\u7279\u6b8a\u6548\u679c\u7684\u5716\u50cf\u8655\u7406\u3002\u60a8\u53ef\u4ee5\u6839\u64da\u9700\u8981\u8abf\u6574\u95be\u503c\u4ee5\u5be6\u73fe\u4e0d\u540c\u7684\u904e\u6ffe\u6548\u679c\u3002<\/p>\n
\n
\"\u76f8\u95dc\u9023\u7d50\"<\/a><\/p>\n
Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n
Q1: CIColorKernel \u7684\u6027\u80fd\u5982\u4f55\uff1f<\/h3>\n
A1: CIColorKernel \u5728\u8655\u7406\u5927\u91cf\u5716\u50cf\u6642\u8868\u73fe\u826f\u597d\uff0c\u4f46\u6027\u80fd\u6703\u6839\u64da\u5716\u50cf\u5927\u5c0f\u548c\u904e\u6ffe\u7684\u8907\u96dc\u5ea6\u800c\u7570\u3002\u5efa\u8b70\u5728\u5be6\u969b\u4f7f\u7528\u4e2d\u9032\u884c\u6e2c\u8a66\u4ee5\u512a\u5316\u6027\u80fd\u3002<\/p>\n
Q2: \u5982\u4f55\u8abf\u6574\u904e\u6ffe\u6548\u679c\uff1f<\/h3>\n
A2: \u60a8\u53ef\u4ee5\u901a\u904e\u4fee\u6539 thresholdFilter<\/code> \u51fd\u6578\u4e2d\u7684\u95be\u503c\uff08\u59820.2\uff09\u4f86\u8abf\u6574\u904e\u6ffe\u6548\u679c\uff0c\u5f9e\u800c\u6539\u8b8a\u54ea\u4e9b\u984f\u8272\u88ab\u8f49\u63db\u70ba\u9ed1\u8272\u6216\u767d\u8272\u3002<\/p>\n
Q3: \u9019\u500b\u6280\u8853\u53ef\u4ee5\u7528\u65bc iOS \u61c9\u7528\u55ce\uff1f<\/h3>\n
A3: \u662f\u7684\uff0c\u9019\u500b\u6280\u8853\u5b8c\u5168\u53ef\u4ee5\u7528\u65bc iOS \u61c9\u7528\uff0c\u60a8\u53ea\u9700\u5c07\u4e0a\u8ff0\u4ee3\u78bc\u6574\u5408\u5230\u60a8\u7684 iOS \u9805\u76ee\u4e2d\u5373\u53ef\u3002<\/p>\n
“`
\n—<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5716\u7247\u4e2dRGB < 0.2\u7684\u984f\u8272\u6539\u8b8a\u70ba\u9ed1\u8272\n\u5269\u9918\u984f\u8272\u6539\u70ba\u767d\u8272\n<\/p>\n","protected":false},"author":1,"featured_media":559,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"aside","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[5],"tags":[78,79],"class_list":["post-282","post","type-post","status-publish","format-aside","has-post-thumbnail","hentry","category-swift","tag-cicolorkernel","tag-replacegraykernel","post_format-post-format-aside"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/badgameshow.com\/steven\/wp-content\/uploads\/2020\/11\/cup-1-1.png","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-4y","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/282","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=282"}],"version-history":[{"count":5,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/282\/revisions"}],"predecessor-version":[{"id":996,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/282\/revisions\/996"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media\/559"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}