基于凹凸贴图的文物纹理重建技术研究

ON MAPPING RECONSTRUCTION TECHNOLOGY FOR CULTURAL RELICS BASED ON BUMP MAPPING

以文物的虚拟展示,资源共享为应用背景,提出了快速有效的高度图提取和凹凸映射方法。分析现有凹凸纹理重建方法的优缺点,结合点云切片技术,得出了适合文物的高度差提取方法;对基于高度图的凹凸映射技术进行研究,得出了快速有效的文物纹理重建方法。实验结果表明,此方法能用较少的多边形建立具有高度真实感的数字化文物,便于网络传输与浏览。

On the application background of cultural relics＇ virtual exhibition and resource sharing,the novel approaches for height map extraction and bump mapping are proposed.Firstly,we analyse the advantages and disadvantages of existing bump mapping reconstruction method,by combining the point cloud slicing technique,a method of height difference extraction suitable for cultural relics is obtained;Secondly,after the study of bump mapping based on height map,a fast and efficient method for reconstructing cultural relics is brought up.Experimental result shows that this method can employ fewer polygons to establish a digital cultural relic in high reality and is convenient for network transmission and browsing.