I am trying to improve the local contrast of a regular 8-bit gray scale image using tone mapping.
I test with the example code (http://docs.opencv.org/3.0-beta/doc/tutorials/photo/hdr_imaging/hdr_imaging.html) and had success with the supplied test images.
I also tested it on a single non-hdr image from that set, and it works just fine.
But if I try to process a grayscale image, it always segfaults. I tried one desaturated image from the set, and a few other random images, with the same result.
It doesn't matter if I load the grayscale image with CV_LOAD_IMAGE_COLOR.
If I take a grayscale image and add a little color to it, it does work, but it defeats the purpose.
can anyone confirm that this is a bug? or am I doing something wrong?
thanks in advance,
Lwi