江燕, 王静, 刘红敏.基于重叠亮度序的曲线描述子[J].河南理工大学学报（自然科学版）,2020,39(3):114-121.

JIANG Y, WANG J, LIU H M.Overlapping intensity order-based curve descriptor[J].Journal of Henan Polytechnic University(Natural Science) ,2020,39(3):114-121.

基于重叠亮度序的曲线描述子

江燕, 王静, 刘红敏

河南理工大学 计算机科学与技术学院，河南焦作454000

摘要:针对现有亮度序划分方法导致子区域划分不稳定的问题，在已有的亮度序均值标准差描述子（IOMSD）和亮度序曲线描述子（IOCD）基础上，引入重叠亮度序划分思想，提出基于重叠亮度序的曲线描述子OIOMSD和OIOCD。与传统描述子构造子区域划分互不重叠不同，本文首先依据图像局部区域内各像素点的亮度序划分原始子区域，其次将每个子区域与其后相邻的子区域进行一定程度的重叠合并，成为最终的子区域。该方法不仅克服了固定形状划分子区域产生的边界误差，而且能够解决噪声和非单调光照对子区域边界点的影响。实验结果表明，OIOMSD和OIOCD对旋转变化、视角变化、噪声和光照变化图像具有鲁棒性，尤其是 OIOCD在非单调光照图像上的匹配性能优于已有的IOCD算法。

关键词:亮度序均值标准差描述子;亮度序曲线描述子;曲线匹配;重叠亮度序

doi:10.16186/j.cnki.1673-9787.2020.3.15

基金项目:河南省科技攻关项目（182102210053 ）

收稿日期:2019/06/13

修回日期:2019/08/19

出版日期:2020/05/15

Overlapping intensity order-based curve descriptor

JIANG Yan, WANG Jing, LIU Hongmin

College of Computer Science and Technology， Henan Polytechnic University， Jiaozuo 454000 ，Henan， China

Abstract:To solve the problem that instability of sub-region division caused by existing intensity order methods ，based on intensity order mean-standard deviation descriptor （IOMSD ） and intensity order curve descriptor （IOCD ） ， two curve descriptors OIOMSD and OIOCD were proposed by introducing the idea of overlapping intensity order. Different from traditional descriptors whose sub-regions division was not overlapped， original subregions were firstly partitioned according to the intensity order of all pixel points in the image local region， then each sub-region and the next one are partial overlapped to form final sub-regions. This method not only overcame the boundary error caused by the fixed shape sub-regions， but also could solve the influence of noise and non-monotonic illumination on the sub-region boundary points. Experimental results showed that OIOMSD and OIOCD had robust performance under image rotation， viewpoint change， noise and illumination change. Moreover， the matching performance of OIOCD under non-monotonic illumination images was better than IOCD.

Key words:intensity order mean-standard deviation descriptor;intensity order curve descriptor;curve matching;overlapping intensity order

基于重叠亮度序的曲线描述子_江燕.pdf