Channels / transparency. How to make?

[leabreuh]

(05-30-2023, 02:25 PM)rich2005 Wrote:

Quote:....I need to leave image2 with the same opacity as the example of image 1 .....

OK, got it (I think)

You can try matching using sample points see: https://docs.gimp.org/2.10/en/gimp-sampl...ialog.html

Any difficulty is assessing matching sample points between images. In this example I chose the dark shadow under the collar.

Then it is applying the curves tool, in alpha mode and getting an alpha value in (2) to match the alpha value in (1)

45 second  example: https://i.imgur.com/JCgnduR.mp4

if it is saved in transparent png or webp, they do not look the same. Save to compare and then open both on a white background and notice the huge difference.