基于接缝一致性准则的结构纹理图像快速合成算法

Fast Structural Texture Image Synthesis Algorithm Based on Seam Consistency Criterion

基于块的结构纹理图像合成算法存在诸多问题,如结构不连续、边界扭曲、接缝不齐以及合成速度慢等,对此提出了一种新的基于双接缝一致性准则的纹理图像非重叠拼接快速合成算法,该算法有效提高了结构纹理图像的合成质量与速度。首先基于更符合人眼视觉特性的HSI颜色空间建立了同时考虑色调、饱和度、亮度和边缘特征的接缝线一致性判别准则;然后提出并实现了基于双接缝线一致性准则的子块搜索策略和非重叠拼接算法。实验结果表明,与传统算法相比,所提算法能够显著提高结构纹理图像的合成质量和速度。

Aiming at the problems of patch-based synthesis algorithm of structured texture images,such as discontinuity of structure,distortion of boundary,seam misalignment,and low synthesis speed,a new fast non-overlapping synthesis algorithm of texture images is proposed based on the consistency criterion of double-seam lines,thereby effectively improving the synthesis quality and speed of structured texture images.Firstly,the seamline consistency criterion considering hue,saturation,brightness and edge characteristics simultaneously is established in HSI color space that is more consistent with human visual characteristic.Then,a sub-block search strategy and a new non-overlapping splicing algorithm based on the consistency criterion of double-seam line are proposed and implemented.The experiment results show that the proposed algorithm can significantly improve the synthesis quality and speed of structured texture images in comparison with the traditional algorithms.