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我使用GPUImage面临以下问题: 1st我正在为相机添加灰度过滤器,然后我使用GPUImageAverageColor
来获取平均颜色。问题是我通过块的颜色不在灰度范围内。我做错了什么?GPUImage平均颜色不适用于应用的灰度过滤器
这是代码:
GPUImageVideoCamera *videoCamera = [[GPUImageVideoCamera alloc] initWithSessionPreset:AVCaptureSessionPreset640x480 cameraPosition:AVCaptureDevicePositionBack];
videoCamera.outputImageOrientation = UIInterfaceOrientationPortrait;
GPUImageView *filterView = (GPUImageView *)self.cameraLayer;
[filterView setFillMode:kGPUImageFillModePreserveAspectRatioAndFill];
GPUImageGrayscaleFilter *grayscaleFilter = [[GPUImageGrayscaleFilter alloc] init];
[videoCamera addTarget:grayscaleFilter];
[grayscaleFilter addTarget:filterView];
GPUImageAverageColor *averageColor = [[GPUImageAverageColor alloc] init];
[averageColor setColorAverageProcessingFinishedBlock:^(CGFloat redComponent, CGFloat greenComponent, CGFloat blueComponent, CGFloat alphaComponent, CMTime frameTime){
NSLog(@"Red: %f, green: %f, blue: %f, alpha: %f", redComponent, greenComponent, blueComponent, alphaComponent);
}];
[videoCamera addTarget:averageColor];
[videoCamera startCameraCapture];
尝试以该摄像机为目标 - > averageColor-> grayscaleFilter-> filterView – ghkaren 2015-02-16 09:59:38