Anchor region metadata take too much space

[delmic]

On acquisition with long exposure time, the anchor region is acquire (almost) for every pixel. That means the anchor region data is much bigger than the actual data.

It's not really nice to save that much metadata. Because of this, Odemis can easily run out of memory, and the acquisition is huge. In addition, anchor region for every pixel is not very useful.

=> Always save the 1st, 2nd and last image, plus some more to have at max 10 images.