Hello,
I noticed what I think is a strange, or inconsistent, behavior in PixInsight when I drag one process step from the history of an image onto another image. In short, what I observe is that the process step is applied to the target image without any regard for the mask that was listed in the history for that step, although the history for the second image shows the step as being applied with the original mask.
Proof of concept:
1 - create one 512x512 pixel greyscale image, with fixed value 0.5. Give this view the name “Image01” (if not automatically done by PI)
2 - duplicate Image1 and give the new view the name “Mask”
3 - apply the following pixelmath expression to the view “Mask”: iif(xpos()>128 && xpos()<384, iif(ypos()>128 && ypos()<384, 1, 0), 0) – The result should be like the one visible in the first attachment.
4 - duplicate Image1 again, and give the new view the name “Image02”
5 - apply “Mask” to “Image01”
6 - apply the following pixelmath expression to the view “Image01”: 0 (a fixed value of 0). The result should be like the one visible in the second attachment, i.e. a black square in the middle of the image
7 - open the history explorer for “Image01”, verify that the pixelmath step is there, masked with “Mask”
8 - drag the pixelmath step from the history of “Image01” onto “Image02”. The image will turn entirely black, as it would be if the mask associated with the process step in the history had been ignored.
9 - open the history explorer for “Image02”. Note how the pixelmath step for Image02 is also listed as being masked with “Mask”. However, this is not true, as Image02 clearly shows that the mask was not honored. The two histories for Image01 and Image02 show the same step applied to two identical sources, with different results, which seems inconsistent.
Am I missing something?
Thanks,
Francesco
