max images limit 126 patch

[samhodge]

see:

https://groups.google.com/d/msg/vsfm/iHtXl7Imfm8/H_XlITLECgAJ

Digging deeper, the error seems to occur on:
jpeg_create_decompress(&cinfo);

(line 36918 of CImg.h), which is a call to libjpeg.

Now for the weird part:
As you can see from the output, the "*" indicate that at least a few images are loaded successfully. The crash always occurs on the same image number, regardless of the dataset! When going through VisualSfM, the error will occur with image #123. When going through the terminal, the crash will always occur at image #126.
If there are less images in the dataset, the algorithm runs through flawlessly. The results are independent of available system RAM.
Furthermore, it seems like the line after "jpeg_create_decompress()" is never executed for any image (when putting debug output, only stuff before that line is outputted, but nothing afterwards).

After taking the above findings into consideration, I suspected that some kind of RAM shortage, a memory leak, or a limit on the number of open files could be the problem. I tried to move the line:
std::FILE *const nfile = file?file:cimg::fopen(filename,"rb");
below the libjpeg call (see above). This will stop the crash. I am currently running through the dataset. As it will take a few hours, I will report back if it worked or not.

Just leaving this here as a reminder for me to do a patch for this, my local version has the patch.

[samhodge]

Sorry about this guys I will make an effort to do this on the weekend.

[GillianYue]

I ran into this problem too, except that for me the crash occurs at image #124