I have a relatively large image that I have compressed to JPEG-XR (with a quality factor of 50) using the PICNIC application. When I try to open the image with the PICNIC application it just displays a black screen. That is what happens with the stock binary PICNIC application (which appears to have built against Visual Studio 2010). I have a custom version of the PICNIC application (actually the JPEG and JPEG-XR codec dlls are custom) that I have built against Visual Studio 2008. When I attempt to open the image, picnic will crash with stack corruption errors (so it crashes in different places). The compressed image itself is fine (the Windows 7 image viewer will happily open it). The image that causes the problem is 8336x11872 at 8 BPP. If I scale the image to 95% of the original size (in both directions), both the stock and my custom PICNIC applications will open/decompress the image without issue. This scaled image is 7919x11278 at 8 BPP. Is there some known size limitation that I haven't seen?
Thanks for the fix. That does appear to solve the immediate issue at hand. I did however notice that if you try to open 1 large (e.g. dirmensioned as in original post) image of any type (tested with TIF and JPEG-XR), then try to open another one of similar size you eventually start getting "QImage: out of memory, returning null" errors displayed in the console that you started picnic from and of course the image does not open. But that appears to be a separate issue and should probably be listed in a new forum thread.