Texture has been investigated as a cue for reconstructing 3-D structure. Th
ere are various textures in a natural scene. In this paper, the regularity
of alignment of texture elements was manipulated to investigate its effect
on human perception. The results show that the regularity affects human per
ception when only the texel density gradient is given as cue or the density
cue is inconsistent with the compression cue. We introduce a model based o
n a MAP estimation to account for the result from a viewpoint of an integra
tion of 3-D cues. The model simultaneously estimates texture properties and
3-D surface orientation by using prior knowledge about texture and 3-D sur
face. The performance of the model accounts for the experimental result wel
l.