数字凹浮雕生成算法  

Sunken Bas-Relief Generation Algorithm

作　　者：张兴治 计忠平[2] ZHANG Xing-zhi;JI Zhong-ping(School of Computing, Hangzhou Dianzi University, Hangzhou 310018;Institute of Graphics and Image, Hangzhou Dianzi University, Hangzhou 310018)

机构地区：[1]杭州电子科技大学计算机学院,杭州310018 [2]杭州电子科技大学图形图像研究所,杭州310018

出　　处：《现代计算机（中旬刊）》2018年第4期35-40,共6页Modern Computer

基　　金：国家自然科学基金项目(No.61202278;No.61202279;No.61003193;No.61272032);浙江省自然科学基金项目(No.LQ-12F02003;LY13F020048)

摘　　要：针对数字浅浮雕设计中风格类型较单一的缺点,提出一个凹浮雕生成算法。从法线角度来解决如何构建凹浮雕问题。首先从法线图中抽取轮廓线以及内部重要线条型特征,计算基于特征线的距离图及其对应的法线图;再将轮廓线、线条和基曲面法线合成一整张法线图;最后由合成的法线图重建高度场以构建浅浮雕。实验结果表明,该方法能便捷地制作为数字化凹浮雕模型。Traditional 3D model-based bas-relief modeling methods are often limited to monotonic relief styles. Presents a method for sunken bas-relief modeling using normal images. Gives an input normal image, the solution includes extracting the silhouette and inside curve features with important visual cues, computing a distance map from the feature lines and its normal map, combining the involved normal images to generate the final normal image, and integrating the composite normal image to generate a height field. Experiments with a range of 3D models show that this method can effectively generate digital sunken bas-reliefs.

关 键 词：数字浅浮雕 凹浮雕 法线图 距离图 高度场 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]