hi all
I am new to both python and image processing. My task is to use python and tk to create a tool which can convert between the difft RGb color spaces like 565,888,444 etc and difft YCbCr color spaces like 444,422,420and 411.
I read abt PIL and installed it.I am working in Windows XP environment.
to do this task i am facing the following problems:

1.read and write image files in difft formats like ppm,pgm,bmp...