Light Paintings
here's a utility that creates light-paintings:
code: pnmpwadd.c
executable for irix: pnmpwadd
It is using weight for colours for each image, and takes a text file with all the file names and parameters.
To use it, use any of the following lines:
pnmpwadd -f input-file -o imageout
pnmpwadd image1 image2 -o imageout
The input file has to be a text file, where each line is as follows:
"{file name}.ppm {red value} {green value} {blue value}"
It should specify names of image files and their weighting for the composition of the final image. The weights are per colour.
and, here are some light-paintings that i did using this program.