Multi-scale is good, since we dont know right scale a priori.
Easiest to compare with naοve Bayes:
Filter image one: (F1, F2,
)
Filter image two: (G1, G2,
)
S means image one and two have same texture.
Approximate: P(F1,G1,F2,G2,
| S)
By P(F1,G1|S)*P(F2,G2|S)*