Question

我想逐帧处理来自相机的实时视频，但当我尝试将我的图像转换为 cv :: Mat 时，我总是得到CGBitmapContextCreate: unsupported parameter combination: set CGBITMAP_CONTEXT_LOG_ERRORS environmental variable to see the details。如果我设置了该变量，我得到Assertion Failed(0) SIGABRT。

我已尝试使用this方法以及包含来自 ios.h 的方法，但我仍然得到相同的结果。我尝试了所有我能找到的东西。我认为唯一剩下的就是当我将CMSampleBuffer转换为UIImage时，我不知道与我的图像有关的内容。这是我的代码：

func captureOutput(_ captureOutput: AVCaptureOutput!, didOutputSampleBuffer sampleBuffer: CMSampleBuffer!, from connection: AVCaptureConnection!) {
    DispatchQueue.global(qos: .background).async {
        let pixelBuff = CMSampleBufferGetImageBuffer(sampleBuffer)
        let ciImage:CIImage? = CIImage(cvPixelBuffer: pixelBuff!)
        let img = UIImage(ciImage: ciImage!)
        let i = self.cv.processImage(withOpenCV: img)
        DispatchQueue.main.async {
            self.imageView.image = i
        }

    }
}

我还尝试了在谷歌上发现的很多不同的方法来将我的缓冲区转换为UIImage，但仍然没有。你有什么想法吗？

Answer 1

func captureOutput(_ captureOutput: AVCaptureOutput!, didOutputSampleBuffer sampleBuffer: CMSampleBuffer!, from connection: AVCaptureConnection!) {
    DispatchQueue.global(qos: .background).async {
        let pixelBuff = CMSampleBufferGetImageBuffer(sampleBuffer)
        let ciImage:CIImage? = CIImage(cvPixelBuffer: pixelBuff!)
        let img = UIImage(ciImage: ciImage!)
        // convert image
        let theimage = UIImage(data: img!.pngData()!)
        let i = self.cv.processImage(withOpenCV: theimage)
        DispatchQueue.main.async {
            self.imageView.image = i
        }

    }
}

iOS - 对cvmat的UIImage - CGBitmapContextCreate：不支持的参数组合

1 个答案: