Help with image overlap

Posted by SUBSCRIBE IMAGEJ Niccolo Cea on
URL: http://imagej.273.s1.nabble.com/Help-with-image-overlap-tp5000186.html

Please, I'would need a help from anybody to solve an easy problem.
I have to overlap two images, that are the same thing but saved in different times. I would need to overlap but the first plan, for sure, has to be more transparent, so I can easily see the second plan. It is possible? And how can I do?
The pictures are 8-bit colors.

Thank you for attention.

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