Question

是否有人知道如何使用CIdetector检测IOS 8和IOS 7中的人脸检测。我正面临着检测脸部的问题。我已经在iPhone 6 plus，iPhone 5s和iPhone 4s等设备上进行了测试。

参考链接：https://developer.apple.com/library/mac/documentation/graphicsimaging/Conceptual/CoreImaging/ci_detect_faces/ci_detect_faces.html

http://maniacdev.com/2011/11/tutorial-easy-face-detection-with-core-image-in-ios-5/

所有上述链接代码都经过测试但结果相同..请帮帮我

`CIImage * image = [CIImage imageWithCGImage：facePicture.image.CGImage]; CIContext * context = [CIContext contextWithOptions：nil]; // 1 NSDictionary * opts = @ {CIDetectorAccuracy：CIDetectorAccuracyHigh}; // 2 CIDetector * detector = [CIDetector detectorOfType：CIDetectorTypeFace 背景：背景选项：选择采用]; // 3

if([[image properties] valueForKey:(NSString *)kCGImagePropertyOrientation] == nil)
{
    opts = @{CIDetectorImageOrientation : [NSNumber numberWithInt:1]};
}
else
{
    opts = @{CIDetectorImageOrientation : [[image properties] valueForKey:(NSString *)kCGImagePropertyOrientation]};
}

NSArray * features = [detector featuresInImage：image options：opts];`

提前致谢

Answer 1

您可以将此CI subclass用于面部检测器。此类不依赖于图像大小输入来检测面部，并且它具有灵活的大小输出。

Answer 2

 CIDetector *smileDetector = [CIDetector detectorOfType:CIDetectorTypeFace
                        context:context 
                        options:@{CIDetectorTracking: @YES, 
                                  CIDetectorAccuracy: CIDetectorAccuracyLow}];
NSArray *features = [smileDetector featuresInImage:image options:@{CIDetectorSmile: @YES}];

Answer 3

见下面的代码..

CIImage *image = [CIImage imageWithCGImage:self.imageView.image.CGImage];
CIDetector *detector = [CIDetector detectorOfType:CIDetectorTypeFace
                                              context:nil options:@{CIDetectorAccuracy:CIDetectorAccuracyHigh}];

NSDictionary *options = @{ CIDetectorSmile: @(YES) };
NSArray *features = [detector featuresInImage:image options:options];

for(CIFaceFeature *feature in features) {
    NSLog(@"Smile %@", feature.hasSmile ? @"YES" : @"NO");
}

IOS 8和IOS 7中的人脸检测？

3 个答案: