摘要
球面调和分析是球面信号分析的重要工具,本文采用球面调和描述子对图像进行形状匹配,首先把平面图像映射到球面上,然后计算球面图像的球面调和描述子,最后通过球面调和描述子得到平面图像的相似性．实验结果表明,球面调和描述子可以较好地匹配图像的形状相似性,并且具有旋转和比例不变性．
Spherical harmonics is of importance for spherical signal analysis. This paper matches shape similarity among images by a spherical harmonic descriptor. First, images are mapped into spherical images, then the similarities are matched among spherical images by a spherical harmonic descriptor. The experimental results show that the spherical harmonic descriptor is not only precise in image shape matching but also invariant to rotation and scale transforms.
出处
《自动化学报》
EI
CSCD
北大核心
2007年第7期683-687,共5页
Acta Automatica Sinica
基金
浙江省科技计划项目(2005C13021)资助~~
关键词
球面调和分析
形状匹配
形状描述子
Spherical harmonics, shape matching, shape descriptor
