Figure 2From: Explore semantic pixel sets based local patterns with information entropy for face recognitionTraditional regular face blocks division. This figure illustrates the effect of using different sizes for regular blocks division. It is shown that when there are occlusions on faces, a finer division allows to have more blocks for comparisons (valid areas); meanwhile, in the case of expression variations, a finer division produces a decrease on the recognition rates because small blocks around some face areas, such as mouth and eyes, are shifted to neighbor blocks.Back to article page