Hi Antoine,
Thank you for your time.
Attached you can see the code for loading the images. I load them from disk, so I don't acquire them from external hardware (cameras). It verifies if the extension of the file is either jpeg, png of bmp. I can send you the whole vi, but I think it looks pretty scary right now .
I know how it looks what I'm trying to do. I already have the 2-D arrays of the images and decoded the RGB palete into separate colour codes.
As for ROI, I was thinking of a sort of overlay or mask over the picture tool, and then use some mouse events or drawing a rectangle on a transparent layer, and then taking the coordinates of the drawn rectangle and use them as the coordinates of the "selected" are in the original picture. I know it may sound stupid maybe, but as I told you, I don't have access to the specialised modules . Only the cracked versions, but of course those won't help me further .