ppmmix

ppmmix fadefactor ppmfile1 ppmfile2

ppmmix blends two PPM images together using the specified fade factor. The factor controls the contribution of each image: 0.0 produces entirely the first image, 1.0 produces entirely the second, and values between create a proportional blend.The fade factor is applied to brightness, not light intensity. This means a linearly increasing fade factor between a black and white image produces linearly increasing perceived brightness, but the actual light intensity increases faster at the bright end. For light-intensity-based mixing, use pamcomp instead.Both input images must have the same dimensions and the same maxval. Part of the Netpbm toolkit.

FADEFACTOR

Mixing factor (0.0-1.0). 0.0 produces entirely the first image, 1.0 produces entirely the second image.

First input PPM image.

Second input PPM image.

Both images must have the same dimensions and maxval. There are no ppmmix-specific options; it only recognizes common libnetpbm options.

ppmmix was created as part of Netpbm for image blending.

ppmfade(1), pamcomp(1), ppm(5)