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POHow to detect and show eyes and mouth in camera in iPhone?
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<p>For detecting face in camera I am reffering to SquareCam(iOS developer library). But I am unable to show left eye, right eye and mouth position. I am using the following code</p> <pre><code>NSArray *sublayers = [NSArray arrayWithArray:[previewLayer sublayers]]; NSInteger sublayersCount = [sublayers count], currentSublayer = 0; NSInteger featuresCount = [features count], currentFeature = 0; [CATransaction begin]; [CATransaction setValue:(id)kCFBooleanTrue forKey:kCATransactionDisableActions]; // hide all the face layers for ( CALayer *layer in sublayers ) { if ( [[layer name] isEqualToString:@"FaceView"] ) [layer setHidden:YES]; } if ( featuresCount == 0 || !detectFaces ) { [CATransaction commit]; return; // early bail. } CGSize parentFrameSize = [previewView frame].size; NSString *gravity = [previewLayer videoGravity]; BOOL isMirrored = [previewLayer isMirrored]; CGRect previewBox = [SquareCamViewController videoPreviewBoxForGravity:gravity frameSize:parentFrameSize apertureSize:clap.size]; for ( CIFaceFeature *ff in features ) { // find the correct position for the square layer within the previewLayer // the feature box originates in the bottom left of the video frame. // (Bottom right if mirroring is turned on) CGRect faceRect = [ff bounds]; CGRect leftEyeFrameRect; CGFloat temp = faceRect.size.width; faceRect.size.width = faceRect.size.height; faceRect.size.height = temp; temp = faceRect.origin.x; faceRect.origin.x = faceRect.origin.y; faceRect.origin.y = temp; // scale coordinates so they fit in the preview box, which may be scaled CGFloat widthScaleBy = previewBox.size.width / clap.size.height; CGFloat heightScaleBy = previewBox.size.height / clap.size.width; faceRect.size.width *= widthScaleBy; faceRect.size.height *= heightScaleBy; faceRect.origin.x *= widthScaleBy; faceRect.origin.y *= heightScaleBy; if ( isMirrored ) { faceRect = CGRectOffset(faceRect, previewBox.origin.x + previewBox.size.width - faceRect.size.width - (faceRect.origin.x * 2), previewBox.origin.y); } else { faceRect = CGRectOffset(faceRect, previewBox.origin.x, previewBox.origin.y); leftEyeFrameRect=CGRectOffset(faceRect,ff.leftEyePosition.x, ff.leftEyePosition.y); } CALayer *featureLayer = nil; CALayer *eyeLayer = nil; // re-use an existing layer if possible while ( !featureLayer && (currentSublayer < sublayersCount) ) { CALayer *currentLayer = [sublayers objectAtIndex:currentSublayer++]; if ( [[currentLayer name] isEqualToString:@"FaceLayer"] ) { featureLayer = currentLayer; [currentLayer setHidden:NO]; } } // create a new one if necessary if ( !featureLayer ) { featureLayer = [CALayer new]; [featureLayer setContents:(id)[square CGImage]]; [featureLayer setName:@"FaceLayer"]; [previewLayer addSublayer:featureLayer]; [featureLayer release]; } [featureLayer setFrame:faceRect]; if (faceView !=nil) { [faceView removeFromSuperview]; [faceView release]; } if (leftEyeView != nil) { [leftEyeView removeFromSuperview]; [leftEyeView release]; } faceView = [[UIView alloc] initWithFrame:CGRectMake(faceRect.origin.x, faceRect.origin.y ,faceRect.size.width, faceRect.size.height)]; faceView.layer.borderWidth = 1; faceView.layer.borderColor = [[UIColor redColor] CGColor]; [self.view addSubview:faceView]; leftEyeView = [[UIView alloc] initWithFrame:CGRectMake(faceView.frame.origin.x+(faceView.frame.size.height/2), faceView.frame.origin.y+(faceView.frame.size.height*0.10) ,faceView.frame.size.width*0.40, faceView.frame.size.height*0.40)]; UIImageView *leftEyeImageView=[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"eye.png"]]; leftEyeImageView.frame = CGRectMake(0, 0, faceView.frame.size.width*0.40, faceView.frame.size.height*0.40); [leftEyeView addSubview:leftEyeImageView]; [self.view addSubview:leftEyeView]; if (ff.hasLeftEyePosition) { CGPoint leftEyeCenter= ff.leftEyePosition; UIView *vv= [[UIView alloc] initWithFrame:CGRectMake(leftEyeCenter.x, leftEyeCenter.y, 50, 50)]; vv.center = leftEyeCenter; vv.layer.borderWidth= 4.0; vv.layer.borderColor= [[UIColor blackColor]CGColor]; [self.view addSubview:vv]; } </code></pre> <p>It is detecting eye but not showing in right position. Can anyone help to resolve this. Thanks in advance.</p>
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<iphone><camera><face-detection>
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How to detect and show eyes and mouth in camera in iPhone?
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