/usr/share/radiance/gaussian.cal is in radiance-materials 4R0+20110410-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | {
Kernel for Gaussian filter
}
kern(x,y) : exp(-(x*x+y*y)/.25);
|