[Gimp-user] alpha channel computation

2008-07-24 Thread Nerius Landys
Hello. I have a TGA image that is fully opaque. I want to introduce translucency to the image, making each pixel translucent according to how far away from black it is. If a pixel is originally black, it becomes fully opaque. If a pixel is originally white, it becomes fully transparent. If a

Re: [Gimp-user] alpha channel computation

2008-07-24 Thread Sven Neumann
Hi, On Thu, 2008-07-24 at 11:49 -0700, Nerius Landys wrote: Hello. I have a TGA image that is fully opaque. I want to introduce translucency to the image, making each pixel translucent according to how far away from black it is. If a pixel is originally black, it becomes fully opaque. If