Effects of variation of patch size and seam size in patch based texture synthesis

This paper presents a simple image-based method of generating novel visual appearance in which a new image can be synthesized by stitching together small patches of existing images. This is a fast and very simple texture synthesis algorithm for patches of uniform size which produces surprisingly good results for a wide range of textures. Further, to improve the visual perception of synthesized texture, a modified patch based synthesis technique, in which the neighboring patches of the synthesized output are made to overlap is proposed. Here instead of picking out a random block, the algorithm searches for a block that, by some measure agrees with its neighbors along the region where overlap takes place. Experiments with different sample textures for different patch sizes and seam sizes are carried out and the quality of the synthesized outputs are measured in terms of quantifying parameters like entropy, histogram matching and computation time. Comparisons with existing techniques demonstrate that these two approaches have better performance than the previous texture synthesis algorithms already proved before.