CompuServe Messages

Michael, > Now the problem … I run in to it often: > The top of your dino's head is black (0,0,0), as are parts of his eye and earhole. > They match the black (0,0,0) background so my composite shows thru these areas. WinImages F/x can fix this using Alpha compositing, I suspect. You need to make an alpha channel for the dino that passes the dinosaur and not the background. WinImages F/x will let you edit the alpha channel separately, so if the alpha channel is generated with holes as you describe, you can edit them and *then* composite, which will fix the problem 100%. > What the heck is this Alpha stuff anyway? An alpha channel is a set of data attached to an image which provides a transparency level for every pixel in the image. This is usually done by adding an additional 8-bit (256 grey level) pixel for every pixel in the image, where black means transparent (or not) and white means the opposite of black… grey levels indicate partial transparency, which also has its uses of course. An alpha channel can be generated by color keying, by hand, or a combination of the two. WinImages F/x will let you do just about anything you want to an alpha channel, so there should be no problem getting all this to work. Good luck! Ben Williams for Black Belt Systems