面部跟踪器找到眼睛iphone

Question

我用这里的代码找到了Face.我试图画出眼睛和脸.但我只能根据我先写的哪个陈述来显示眼睛或脸部.这该怎么做？

// Detect faces
std::vector faces;
_faceCascade.detectMultiScale(mat, faces, 1.1, 2, kHaarOptions, cv::Size(60, 60));
//Detect eyes
std::vector eyes;
_eyesCascade.detectMultiScale(mat, eyes, 1.1, 2, kHaarOptions, cv::Size(30, 30));

这里eyes.size()= 0.如果我互换两个语句的位置,我得到eyes.size()= 2和faces.size()= 0

Answer 1

如果您的目标是检索iOS上的面部和眼睛位置,为什么不使用CoreImage功能？

CIImage *image = [CIImage imageWithContentsOfURL:[NSURL fileURLWithPath:@"image.jpg"]];

NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:CIDetectorAccuracyHigh, CIDetectorAccuracy, nil];

CIDetector *faceDetector = [CIDetector detectorOfType:CIDetectorTypeFace context:nil options:options];

NSArray *features = [faceDetector featuresInImage:image];
for(CIFaceFeature* faceFeature in features)
{
    CGRect faceSize = faceFeature.bounds.size;
    PointF leftEyePosition;
    PointF rightEyePosition;
    PointF mouthPosition;

    if(faceFeature.hasLeftEyePosition)
        leftEyePosition = faceFeature.leftEyePosition;
    //do the same for right eye and mouth
}

它不使用OpenCV,但你可以免费获得口位.