2D Image Texture Synthesis Techniques Based On LBP

In recent years,texture synthesis has been widely used in photorealistic rendering, non-photorealistic rendering,data compression,computer animation,image inpainting and editing,etc.Texture synthesis has become an important study subject in the fields such as Computer Graphics,Computer Vision and Image Processing.Starting with a brief overview of existing techniques for texture synthesis,we focus on the study of techniques for patch-based 2D image texture synthesis.The related work and main contributions in this thesis are summarized as follows:1.This thesis gives a general overview of the state-of-the-art for example-based 2D texture synthesis,and presents an algorithm summery of 2D texture synthesis.2.Texture synthesis based on LBP imageSimilar to the patching ideas of Image Quilting algorithm,this thesis presents a texture synthesis algorithm based on LBP(Local Binary Pattern) image.The proposed algorithm uses LBP image as the temporary image for SSD calculation in the process of texture synthesis, meanwhile adds the step of MEBC(Minimum Error Boundary Cut) estimation.This algorithm is patch-based texture synthesis,and can be implemented easily and simply.It can synthesize many kinds of textures,and get a good balance between quality and speed.For regular texture synthesis,we simplify the proposed method by omitting the calculation of MEBC3.Texture synthesis based on LBP Integral HistogramSimilarity measure based on LBP HistogramAfter calculating the LBP image for the given texture sample,we take the histogram similarity measure as the matching norm in texture synthesis.By means of LBP histogram in texture synthesis,the problem of natural texture synthesis can be solved.Experiments show that good results with abundant texture details can be achieved for nature texture synthesis; compared with the algorithm based on LBP image,this algorithm is a bit time-consuming.Fast calculation of LBP histogram based on Integral HistogramIn order to improve the speed of the proposed algorithm,Integral Histogram is applied to LBP histogram calculation for local rectangular area anywhere in the temporary LBP image. This is the proposed algorithm named "Texture synthesis based on LBP Integral Histogram". Generally,the use of Integral Histogram largely reduces the cost for histogram,and improves the efficiency of texture synthesis.Experiments illustrate a good compromise between synthesis quality and speed.