Texture Synthesis Optimization for Large Scale Structures

Exemplar-based texture synthesis methods aim to generate arbitrarily larger textures from limited exemplars without strong artifacts or introducing obvious unnatural visual elements. While existing non-parametric exemplar-based synthesis methods have made remarkable progress on reduce artifacts. Most of them have not been good enough to avoid introducing error-mixed larger scale in synthesis textures. In addition, in noisy large-scale regular texture, there always exists the large-scale motif texture. These large-scale motifs are difficult to correct synthesized for texture synthesis. So in this paper we focus on the problem of large scale structures synthesized problem in texture synthesis. In order to avoid introducing error large scale in texture synthesis, diamond searching with decreasing radius method is proposed in the block search step. The patch distance measure is designed by considering local principal curvature. Different from most of the existing techniques, no extra guided channel is needed. The exemplar contends large-scale regular structure will be extracted a motif at first. Then the motif will be synthesized by patch-based method. The experiment results show that the proposed method achieves significant improvements.