Texel Selection.

Since most of textures are not strictly homogeneous, a stack of different texels might be associated with a same relative shift reflecting local variations of textures. Two strategies could be used for texel selection in the synthesis. The first method is to compute an approximate Bayesian estimate of texels, based on the maximum marginal posterior (MMP) probabilities of image signals by superposing all associated texels, for each relative shift. The resulting estimate represents the most probable texel at each relative position and is used in texture synthesis. The second method is to select a random texel from the stack as a representative for each relative shift. Synthesis results with both methods are shown and discussed in the next section.