我正在使用 CIFaceFeature 检测面部并微笑它正确检测到面部但它没有检测到这个人是否在微笑的天气我正在使用以下代码来检测微笑
CIImage* image = [CIImage imageWithCGImage:facePicture.CGImage];
// create a face detector - since speed is not an issue we'll use a high accuracy
// detector
CIDetector* detector = [CIDetector detectorOfType:CIDetectorTypeFace
context:nil options:[NSDictionary dictionaryWithObject:CIDetectorAccuracyLow forKey:CIDetectorAccuracy]];
// create an array containing all the detected faces from the detector
NSArray* features = [detector featuresInImage:image];
// we'll iterate through every detected face. CIFaceFeature provides us
// with the width for the entire face, and the coordinates of each eye
// and the mouth if detected. Also provided are BOOL's for the eye's and
// mouth so we can check if they already exist.
// NSLog(@"Finding: %d",[features count]);
HUDView.hidden = YES;
for(CIFaceFeature* faceFeature in features)
{
HUDView.hidden = NO;
// get the width of the face
CGFloat faceWidth = faceFeature.bounds.size.width;
// create a UIView using the bounds of the face
//faceView = [[UIView alloc] initWithFrame:faceFeature.bounds];
faceView.frame = faceFeature.bounds;
// add a border around the newly created UIView
faceView.backgroundColor = [UIColor clearColor];
faceView.layer.borderWidth = 1;
faceView.layer.borderColor = [[UIColor redColor] CGColor];
if(faceFeature.hasMouthPosition)
{
// create a UIView with a size based on the width of the face
NSLog(@"%f",faceFeature.rightEyePosition.x);
NSLog(@"%f",faceFeature.leftEyePosition.x);
NSLog(@"%f",faceFeature.mouthPosition.x);
NSLog(@"%f %f %f %f",faceFeature.mouthPosition.x-faceWidth*0.2,faceFeature.mouthPosition.y-faceWidth*0.2, faceWidth*0.4, faceWidth*0.4);
CGRect mouthRect = CGRectMake(faceFeature.mouthPosition.x-faceWidth*0.2, faceFeature.mouthPosition.y-faceWidth*0.2, faceWidth*0.4, faceFeature.bounds.size.height*0.4);
CGRect pointRect = CGRectMake(faceFeature.mouthPosition.x-faceWidth*0.2, faceFeature.mouthPosition.y-faceWidth*0.2, 3, 3);
pointView.frame = pointRect;
[pointView setBackgroundColor:[[UIColor blueColor] colorWithAlphaComponent:0.5]];
// set the position of the mouthView based on the face
[pointView setCenter:faceFeature.mouthPosition];
// round the corners
pointView.layer.cornerRadius = faceWidth*0.2;
//float topSpace = faceFeature.bounds.origin.y;
float bottomSpace = 460- (faceFeature.bounds.origin.y+faceFeature.bounds.size.height);
CGRect cutRect = CGRectMake(faceFeature.mouthPosition.x-faceWidth*0.2, bottomSpace+(faceWidth*0.75)+faceWidth*0.02,
faceWidth*0.4, faceWidth*0.2);
mouthRect.origin.y += ((faceFeature.bounds.origin.y)+faceWidth*0.4);
//mouthRect.origin.y += facePicture.bounds.size.height - (faceFeature.mouthPosition.y + faceWidth*0.2);
// CGImageRef imageRef = CGImageCreateWithImageInRect([facePicture CGImage], mouthRect);
CGImageRef imageRef = CGImageCreateWithImageInRect([facePicture CGImage], cutRect);
// or use the UIImage wherever you like
//////////////////////////////////////////////////////////////
UIImage *smileData = [UIImage imageWithCGImage:imageRef];
smileView.image = [[SDetector detector] convertImageToGrayColor:smileData];
CGImageRelease(imageRef);
NSMutableArray *histoData = [[SDetector detector] getHistogramArray:smileData];
int value = [[SDetector detector] smileProcess:histoData];
scoreLB.text = [NSString stringWithFormat:@"%d",value];
//histogramImageView.image = [[SDetector detector] drawHistogram:histoData];
//////////////////////////////////////////////////////////////
oldHistoArr = newHistoArr;
newHistoArr = histoData;
int oldSum=0,oldAVG=0;
int newSum=0,newAVG=0;
oldDiffSUM = newDiffSUM;
newDiffSUM = 0;
NSLog(@"[oldHistoArr count]:>>>>>>>>>>>>>%d",[oldHistoArr count]);
NSLog(@"[newHistoArr count]:>>>>>>>>>>>>>%d",[newHistoArr count]);
if ([oldHistoArr count]>0) {
for (int i=0; i<256; i++)
{
oldSum += [[oldHistoArr objectAtIndex:i] intValue];
newSum += [[newHistoArr objectAtIndex:i] intValue];
newDiffSUM += 0.7*abs([[oldHistoArr objectAtIndex:i] intValue] - [[newHistoArr objectAtIndex:i] intValue]);
}
oldAVG = oldSum/256;
newAVG = newSum/256;
float multi = ((float)(250-faceWidth)/250.0) /1.9 +1.0;
float ratio = (float)newDiffSUM/(float)oldDiffSUM;
if (ratio>2) {
ratio = ratio*multi;
}
NSLog(@"FW: %f[%f] [DIFF: %d]\t%f\t%f",faceWidth,multi,newDiffSUM,ratio,ratio/6.0);
[progressView setProgress:ratio/6.0];
scoreLB.text = [NSString stringWithFormat:@"%d",newDiffSUM];
if (ratio >= currentLevel && autoON) {
NSLog(@"Capture At %f > %f", ratio,currentLevel);
[self captureStillImage:nil];
}
}
////////////////////////////////////////////
mouth.frame = mouthRect;
// change the background color for the mouth to green
[mouth setBackgroundColor:[[UIColor greenColor] colorWithAlphaComponent:0.3]];
// set the position of the mouthView based on the face
[mouth setCenter:faceFeature.mouthPosition];
// round the corners
mouth.layer.cornerRadius = faceWidth*0.2;
// add the new view to the window
NSLog(@"%f",faceFeature.bounds.size.height);
}
//NSLog(@"Lx%.2f Ly%.2f Rx%.2f Ry%.2f Mx%.2f My%.2f", faceFeature.leftEyePosition.x, faceFeature.leftEyePosition.y, faceFeature.rightEyePosition.x, faceFeature.rightEyePosition.y, faceFeature.mouthPosition.x, faceFeature.mouthPosition.y);
}