纹理映射算法的改进研究

摘要

纹理映射是真实感图形绘制中的重要组成部分,文中提出的纹理映射算法是在传统映射算法的基础上做了两点改进,由于传统的映射算法在物体的两极易产生纹理汇聚现象,且有明显接缝,故真实感效果不理想。文中将纹理图案做适当的拉伸变换,再做映射的逆变换,利用三角网格对接缝处做匹配,实现了纹理的无缝拼接,并能保持表面的连续性,具有较小的变形%Texture mapping is an important part of realistic image drawing.The texture mapping algorithm this paper puts forward is improved based on two traditional mapping algorithms.Because by the traditional mapping algorithm the texture gathering phenomenon always appears in the two poles of an object and there are obvious seams,the realistic effect is not satisfactory.This paper uses suitable stretching transformation on the texture pattern,then does inverse transformation to the mapping and match the seam through the triangular mesh.By this algorithm a seamless texture is achieved and the continuity of the surface is maintained with small deformation