Use CIDetector for face recognition and cidetector for face recognition

Use CIDetector for face recognition and cidetector for face recognition
Use CIDetector for face recognition by Wu xueying
Use CIDetector to add images for face recognition: UIImage * image = [UIImage imageNamed: @ "face.jpg"]; UIImageView * testImage = [[UIImageView alloc] initWithImage: image]; [testImage setTransform: CGAffineTransformMakeScale (1,-1)]; [[UIApplication sharedApplication] delegate]. window setTransform: CGAffineTransformMakeScale (1,-1)]; [testImage setFrame: CGRectMake (0, 0, testImage. image. size. width, testImage. image. size. height)]; [self. view addSubview: testImage]; recognition image: CIImage * ciimage = [CIImage imageWithCGImage: image. CGImage]; NSDictionary * opts = [NSDictionary dictionaryWithObject: Rule forKey: role]; CIDetector * detector = [CIDetector detectorOfType: Condition context: nil options: opts]; NSArray * features = [detector featuresInImage: ciimage]; mark the face, eyes, and mouth: for (CIFaceFeature * faceFeature in features) {}// mark the face CGFloat faceWidth = faceFeature. bounds. size. width; UIView * faceView = [[UIView alloc] initWithFrame: faceFeature. bounds]; faceView. layer. borderWidth = 1; faceView. layer. borderColor = [[UIColor redColor] CGColor]; [self. view addSubview: faceView]; // mark the left eye if (faceFeature. hasLeftEyePosition) {UIView * leftEyeView = [[UIView alloc] initWithFrame: CGRectMake (faceFeature. leftEyePosition. x-faceWidth * 0.15,
FaceFeature. leftEyePosition. y-faceWidth * 0.15, faceWidth * 0.3, faceWidth * 0.3)]; [leftEyeView setBackgroundColor: [[UIColor blueColor] colorWithAlphaComponent: 0.3]; [leftEyeView setCenter: faceFeature. leftEyePosition]; leftEyeView. layer. cornerRadius = faceWidth * 0.15; [self. view addSubview: leftEyeView];} // mark the right eye if (faceFeature. hasRightEyePosition) {UIView * leftEye = [[UIView alloc] initWithFrame: CGRectMake (faceFeature. rightEyePosition. x-faceWidth * 0.15, faceFeature. rightEyePosition. y-faceWidth * 0.15, faceWidth * 0.3, faceWidth * 0.3)]; [leftEye setBackgroundColor: [UIColor blueColor] colorWithAlphaComponent: 0.3]; [leftEye setCenter: faceFeature. rightEyePosition]; leftEye. layer. cornerRadius = faceWidth * 0.15; [self. view addSubview: leftEye];} // mark the mouth if (faceFeature. hasMouthPosition) {UIView * mouth = [[UIView alloc] initWithFrame: CGRectMake (faceFeature. mouthPosition. x-faceWidth * 0.2,
FaceFeature. mouthPosition. y-faceWidth * 0.2, faceWidth * 0.4, faceWidth * 0.4)]; [mouth setBackgroundColor: [UIColor greenColor] colorWithAlphaComponent: 0.3]; [mouth setCenter: faceFeature. mouthPosition]; mouth. layer. cornerRadius = faceWidth * 0.2; [self. view addSubview: mouth];}
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