{"id":798,"date":"2023-07-13T12:04:00","date_gmt":"2023-07-13T04:04:00","guid":{"rendered":"https:\/\/www.zhidianwl.net\/zhidianwl\/?p=798"},"modified":"2023-07-13T12:04:00","modified_gmt":"2023-07-13T04:04:00","slug":"img%e5%b0%81%e8%a3%85ios%e6%98%af%e6%80%8e%e4%b9%88%e6%93%8d%e4%bd%9c%e5%ae%9e%e7%8e%b0%e7%9a%84%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.zhidianwl.net\/zhidianwl\/2023\/07\/13\/img%e5%b0%81%e8%a3%85ios%e6%98%af%e6%80%8e%e4%b9%88%e6%93%8d%e4%bd%9c%e5%ae%9e%e7%8e%b0%e7%9a%84%ef%bc%9f\/","title":{"rendered":"img\u5c01\u88c5ios\u662f\u600e\u4e48\u64cd\u4f5c\u5b9e\u73b0\u7684\uff1f"},"content":{"rendered":"

\u5728 iOS \u5f00\u53d1\u4e2d\uff0c`UIImageView` \u662f\u5e38\u7528\u7684\u63a7\u4ef6\u4e4b\u4e00\uff0c\u53ef\u4ee5\u7528\u4e8e\u663e\u793a\u56fe\u7247\u3002\u4f46\u662f\uff0c\u6709\u65f6\u5019\u6211\u4eec\u9700\u8981\u5bf9\u56fe\u7247\u8fdb\u884c\u4e00\u4e9b\u5904\u7406\uff0c\u6bd4\u5982\u88c1\u526a\u3001\u7f29\u653e\u3001\u6dfb\u52a0\u6ee4\u955c\u7b49\u7b49\uff0c\u8fd9\u65f6\u5019\u5c31\u9700\u8981\u7528\u5230 `Core Image` \u6846\u67b6\u3002\u800c\u4e3a\u4e86\u66f4\u65b9\u4fbf\u5730\u4f7f\u7528 `Core Image`\uff0c\u6211\u4eec\u901a\u5e38\u4f1a\u5bf9\u5176\u8fdb\u884c\u5c01\u88c5\uff0c\u8fd9\u5c31\u662f\u672c\u6587\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\uff1a\u5982\u4f55\u5c01\u88c5 `Core Image`\u3002<\/p>\n

## \u4ec0\u4e48\u662f Core Image<\/p>\n

`Core Image` \u662f iOS \u548c macOS \u7cfb\u7edf\u4e2d\u7528\u4e8e\u5904\u7406\u56fe\u50cf\u7684\u6846\u67b6\u3002\u5b83\u63d0\u4f9b\u4e86\u5f88\u591a\u6ee4\u955c\u6548\u679c\uff0c\u6bd4\u5982\u6a21\u7cca\u3001\u9510\u5316\u3001\u8272\u5f69\u8c03\u6574\u7b49\u7b49\u3002\u540c\u65f6\uff0c\u5b83\u8fd8\u80fd\u591f\u5bf9\u56fe\u50cf\u8fdb\u884c\u7f29\u653e\u3001\u88c1\u526a\u3001\u65cb\u8f6c\u7b49\u64cd\u4f5c\uff0c\u975e\u5e38\u65b9\u4fbf\u3002<\/p>\n

## \u5c01\u88c5 Core Image<\/p>\n

\u5728\u4f7f\u7528 `Core Image` \u8fdb\u884c\u56fe\u7247\u5904\u7406\u65f6\uff0c\u6211\u4eec\u901a\u5e38\u9700\u8981\u8fdb\u884c\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n

1. \u521b\u5efa `CIImage` \u5bf9\u8c61\uff0c\u7528\u4e8e\u8868\u793a\u8981\u5904\u7406\u7684\u56fe\u7247\u3002<\/p>\n

2. \u521b\u5efa `CIFilter` \u5bf9\u8c61\uff0c\u7528\u4e8e\u8868\u793a\u8981\u5e94\u7528\u7684\u6ee4\u955c\u6548\u679c\u3002<\/p>\n

3. \u5c06 `CIImage` \u5bf9\u8c61\u4f20\u5165 `CIFilter` \u5bf9\u8c61\u4e2d\uff0c\u8fdb\u884c\u6ee4\u955c\u5904\u7406\u3002<\/p>\n

4. \u83b7\u53d6\u5904\u7406\u540e\u7684 `CIImage` \u5bf9\u8c61\u3002<\/p>\n

5. \u5c06 `CIImage` \u5bf9\u8c61\u8f6c\u6362\u4e3a `UIImage` \u5bf9\u8c61\uff0c\u7528\u4e8e\u663e\u793a\u6216\u4fdd\u5b58\u3002<\/p>\n

\u4ee5\u4e0a\u6b65\u9aa4\u6bd4\u8f83\u7e41\u7410\uff0c\u800c\u4e14\u5bf9\u4e8e\u4e0d\u540c\u7684\u6ee4\u955c\u6548\u679c\uff0c\u521b\u5efa `CIFilter` \u5bf9\u8c61\u7684\u65b9\u5f0f\u4e5f\u4e0d\u4e00\u6837\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u8fd9\u4e9b\u6b65\u9aa4\u5c01\u88c5\u8d77\u6765\uff0c\u63d0\u4f9b\u4e00\u4e2a\u66f4\u65b9\u4fbf\u7684\u63a5\u53e3\u3002<\/p>\n

\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u5c01\u88c5\u793a\u4f8b\uff1a<\/p>\n

“`objc<\/p>\n

@interface UIImage (Filter)<\/p>\n

– (UIImage *)applyFilterWithName:(NSString *)filterName;<\/p>\n

@end<\/p>\n

@implementation UIImage (Filter)<\/p>\n

– (UIImage *)applyFilterWithName:(NSString *)filterName {<\/p>\n

CIImage *inputImage = [[CIImage alloc] initWithImage:self];<\/p>\n

CIFilter *filter = [CIFilter filterWithName:filterName];<\/p>\n

[filter setValue:inputImage forKey:kCIInputImageKey];<\/p>\n

CIImage *outputImage = filter.outputImage;<\/p>\n

CIContext *context = [CIContext contextWithOptions:nil];<\/p>\n

CGImageRef cgImage = [context createCGImage:outputImage fromRect:outputImage.extent];<\/p>\n

UIImage *filteredImage = [UIImage imageWithCGImage:cgImage];<\/p>\n

CGImageRelease(cgImage);<\/p>\n

return filteredImage;<\/p>\n

}<\/p>\n

@end<\/p>\n

“`<\/p>\n

\u4e0a\u9762\u7684\u4ee3\u7801\u5c06 `applyFilterWithName:` \u65b9\u6cd5\u6dfb\u52a0\u5230\u4e86 `UIImage` \u7c7b\u522bapp\u5f00\u53d1\u4eba\u5458<\/a>\u4e2d\u3002\u8be5\u65b9\u6cd5\u63a5\u6536\u4e00\u4e2a\u6ee4\u955c\u540d\u79f0\u4f5c\u4e3a\u53c2\u6570\uff0c\u5c06\u5f53\u524d `UIImage` \u5bf9\u8c61\u4f5c\u4e3a\u8f93\u5165\u56fe\u7247\uff0c\u5e94\u7528\u6307\u5b9a\u7684\u6ee4\u955c\u6548\u679c\uff0c\u5e76\u8fd4\u56de\u5904\u7406\u540e\u7684\u56fe\u7247\u3002<\/p>\n

## \u4f7f\u7528\u5c01\u88c5\u540e\u7684 Core Image<\/p>\n

\u4f7f\u7528\u5c01\u88c5\u540e\u7684 `Core Image` \u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u8981\u8c03\u7528 ios\u4e91\u6253\u5305<\/a>`applyFilterWithName:` \u65b9\u6cd5\u5373\u53ef\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n

“`objc<\/p>\n

UIImage *originalImage = [UIImage imageNamed:@”image.jpg”];<\/p>\n

UIImage *filteredImage = [originalImage applyFilterWithName:@”CIColorInvert”];<\/p>\n

self.imageView.image = filteredImage;<\/p>\n

“`<\/p>\n

\u4ee5\u4e0a\u4ee3\u7801\u5c06 `image.jpg` \u56fe\u7247\u52a0\u8f7d\u5230 `originalImage` \u4e2d\uff0c\u7136\u540e\u5e94\u7528 `CIColorInvert` \u6ee4\u955c\u6548\u679c\uff0c\u6700\u540e\u5c06\u5904\u7406\u540e\u7684\u56fe\u7247\u663e\u793a\u5728 `imageView` \u4e2d\u3002<\/p>\n

## \u603b\u7ed3<\/p>\n

\u5c01\u88c5 `Core Image` \u53ef\u4ee5\u8ba9\u6211\u4eec\u66f4\u65b9\u4fbf\u5730\u4f7f\u7528\u5176\u63d0\u4f9b\u7684\u6ee4\u955c\u6548\u679c<\/p>\n

<\/figure>\n<\/p>\n

\uff0c\u540c\u65f6\u4e5f\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u590d\u7528\u6027\u548c\u53ef\u8bfb\u6027\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u9700\u8981\u8fdb\u4e00\u6b65\u6269\u5c55\u5c01\u88c5\u7684\u65b9\u6cd5\uff0c\u6bd4\u5982\u652f\u6301\u591a\u4e2a\u6ee4\u955c\u6548\u679c\u7684\u7ec4\u5408\u3001\u8c03\u6574\u6ee4\u955c\u53c2\u6570\u7b49\u7b49\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5728 iOS \u5f00\u53d1\u4e2d\uff0c`UIImageView` \u662f\u5e38\u7528\u7684\u63a7\u4ef6\u4e4b\u4e00\uff0c\u53ef\u4ee5\u7528\u4e8e\u663e\u793a\u56fe\u7247\u3002\u4f46\u662f\uff0c\u6709\u65f6\u5019\u6211\u4eec\u9700\u8981\u5bf9\u56fe\u7247\u8fdb\u884c\u4e00\u4e9b\u5904\u7406\uff0c\u6bd4\u5982\u88c1\u526a\u3001\u7f29\u653e\u3001\u6dfb\u52a0\u6ee4\u955c\u7b49\u7b49\uff0c\u8fd9\u65f6\u5019\u5c31\u9700\u8981\u7528\u5230 `Core Image` <\/p>\n","protected":false},"author":22,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1843,1844,1406,1455,1842],"topic":[],"class_list":["post-798","post","type-post","status-publish","format-standard","hentry","category-kaifaapp","tag-android-aar","tag-ios-app","tag-1406","tag-1455","tag-1842"],"_links":{"self":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/posts\/798","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/comments?post=798"}],"version-history":[{"count":0,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/posts\/798\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/media?parent=798"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/categories?post=798"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/tags?post=798"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/topic?post=798"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}