Sixteen frames from the generalized filtering process.
The "seed" picture (STAR, see figure "Four tool pictures")
providing, after an appropriate rotation, the kernel
picture (not displayed on this figure); denoting R the
rotation operator, each frame of this picture can be
defined as:
GF(SCM1(GF(STAR,R(STAR,angle))),GAUSS)
where angle varies within [0,pi/2] with a step of pi/32.