DigitalVolcano Software Support

Could you provide some info about how Image Mode works? The manual states that "the actual images are visually compared" - what does this mean?

It means the image pixels are compared (or an approximation thereof) rather than just the raw file binary information as used in Regular mode.

Thank you for your answer. So, is this a "brute force", simple comparison? A 80% value means that 80% of the pixels have exactly the same value? Nothing like the solutions mentioned on this stack overflow "image comparison - fast algorithm" post?

Almost,but it works more on averages -it doesn't compare pixel-for-pixel unless you select 'Exact Match'

Looking at adding other algorithms for version 5 - this may align with some of the solutions you mentioned.