iOS人脸识别(检测)

标签：人脸识别   ios   

    iOS的CoreImage已经内建了人脸检测的接口，检测准确率一般，尤其是侧脸，基本上就检测不到。不过跟其他同类产品比较，也还算是不相上下吧。用起来很简单：

    CIImage* image = [CIImage imageWithCGImage:aImage.CGImage];
    
    NSDictionary  *opts = [NSDictionary dictionaryWithObject:CIDetectorAccuracyHigh
                                                      forKey:CIDetectorAccuracy];
    CIDetector* detector = [CIDetector detectorOfType:CIDetectorTypeFace
                                              context:nil
                                              options:opts];
    
    //得到面部数据
    NSArray* features = [detector featuresInImage:image];

最后的features中就是检测到的全部脸部数据，可以用如下方式计算位置：

    for (CIFaceFeature *f in features)
    {
        CGRect aRect = f.bounds;       
         NSLog(@"%f, %f, %f, %f", aRect.origin.x, aRect.origin.y, aRect.size.width, aRect.size.height);

         //眼睛和嘴的位置
         if(f.hasLeftEyePosition) NSLog(@"Left eye %g %g\n", f.leftEyePosition.x, f.leftEyePosition.y);
         if(f.hasRightEyePosition) NSLog(@"Right eye %g %g\n", f.rightEyePosition.x, f.rightEyePosition.y);
         if(f.hasMouthPosition) NSLog(@"Mouth %g %g\n", f.mouthPosition.x, f.mouthPosition.y);
    }

iOS人脸识别(检测)

标签：人脸识别   ios   

原文地址：http://blog.csdn.net/cuibo1123/article/details/46309923