摘要
提出一种基于迭代传播的方法求解小基高比立体匹配中的相关基本等式以解决立体匹配中存在的黏合现象。该方法首先根据启发式信息估计实际立体匹配系统中整数级视差的误差水平;其次,根据Morozov原理设计一个迭代正则参数选择方法对相关基本等式进行正则化处理并建立目标泛函;再次,利用延迟扩散定点迭代方法获得目标泛函的迭代传播等式;最后,通过共轭梯度法对该等式进行迭代求解。实验结果表明:该方法减少了小基高比立体匹配中的黏合现象,其视差图的准确率可达95%以上,且像元匹配差异精度优于1/10个像元。
A method based on iterative diffusion was proposed to solve the central equation of correlation in small baseline stereovision for Adhesion phenomenon.This method firstly estimated the error level of integer disparity in the practical stereo matching system with heuristic information;secondly,an iterative method for the choice of regulation parameter was designed according to Morazov principle to be regulation of the objective function;thirdly,the iterative diffusion equation was obtained by lagged diffusivity fixed point iteration;finally,the equation was solved iteratively by conjugate gradient method.The experimental results show that this method reduces the ＂adhesion phenomenon＂ in the small baseline stereovision and the accuracy of its resulting disparity map is more than 95% and it has sub-pixel accuracy better than 1/10.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第4期1362-1370,共9页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(60873138)
中央高校基本科研业务费专项资金资助项目(HEUCF100607)
关键词
立体匹配
小基高比
迭代传播
共轭梯度法
黏合现象
stereo matching
small baseline
iterative diffusion
conjugate gradient method
adhesion phenomenon
