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Having low memory issues with HDR (MergeMertens)

Hi, I'm having problems using MergeMertens HDR process function, when working with big images. The resolution of the images is 3264x2448.

I'm using only two different exposures, but I don't know what's the function doing internally, but seems that require lots of memory to make the processing of the images.

I'm using a mobile device for processing, so the amount of RAM is very limited, around 1Gb.

I have two questions,

  1. Best scenario question: Any ideas how can I process these big images without crashing? At this point I'm working with lower resolution images (1920x1080), and trying to process the images only with one channel, and later merging the channels again, to save memory (still not having a working version). Any more ideas?

  2. Worst scenario question: How can I prevent the app from crashing when there's no more memory left?