Question

I’m looking for a way to convert an RAW8 image coming from a camera into a color image NSImage/CIImage.

Is there a framework class that can apply the Bayer filter and give me a color RGB image?

I.e. I have an array of bytes with 8bpp and I want a 32bpp RGB NSImage or CIImage.

I tried CIFilter filterWithImageData but that makes Xcode stop with EXC_BREAKPOINT?

Answer 1

In the end I came up with two solutions:

Using OpenCV (http://www.OpenCV.org):

    CvMat M = cvMat(height, width, CV_8UC1, frame->image);
    IplImage img; 
    cvGetImage(&M, &img);

    IplImage *copyImg = cvCreateImage(cvSize(width, height), IPL_DEPTH_8U, 3);
    cvCvtColor(&img, copyImg, CV_BayerBG2RGB);

But I was missing the obvious: I was getting the image from the camera with libDC1394 and that provides a conversion method itself:

    dc1394_debayer_frames(frame, new_frame, DC1394_BAYER_METHOD_NEAREST);