添加图片:
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];
识别图片:
CIImage* ciimage = [CIImage imageWithCGImage:image.CGImage];
NSDictionary* opts = [NSDictionary dictionaryWithObject:
CIDetectorAccuracyHigh forKey:CIDetectorAccuracy];
CIDetector* detector = [CIDetector detectorOfType:CIDetectorTypeFace
context:nil options:opts];
NSArray* features = [detector featuresInImage:ciimage];
标出脸部,眼睛和嘴:
for (CIFaceFeature *faceFeature in features){
}
// 标出脸部
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];
// 标出左眼
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];
}
// 标出右眼
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];
}
// 标出嘴部
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];
}
