关键词: 纹理合成,Chamfer距离,结构特征,GPU

Abstract: We proposed a texture synthesis method based on Chamfer distance,which preserves the texture structures.We measured the similarity between texture structures by Chamfer distance and computed the distances of textures in both color space and structure feature space during the search of the matching texture patches.In this way,we solved the problem of discontinuity in synthesized textures with obvious structural patterns.However,the computational cost of Chamfer distance is very expensive,and it will become unaffordable as the resolution of the synthesized textures increases.To address this problem,we further presented a GPU-based algorithm to accelerate the computation of Chamfer distance during texture synthesis.The matching patches are searched in parallel on GPU to greatly improve the computational efficiency.Experimental results show that our method improves the quality of structured texture synthesis and accelerates the synthesis speed,which is irrelevant to the resolution of synthesized textures.

Key words: Texture synthesis,Chamfer distance,Structure feature,GPU