一种面向遮挡的光流计算方法  

An Efficient Method for Estimating Occlusion-oriented Optical Flow

作　　者：李灿林[1] 朱付保[1] 

机构地区：[1]郑州轻工业学院计算机与通信工程学院

出　　处：《科学技术与工程》2014年第20期246-250,共5页Science Technology and Engineering

基　　金：国家自然科学基金项目(61303093);河南省教育厅自然科学计划项目(12B520068);郑州轻工业学院博士科研基金项目(2011BSJJ002)资助

摘　　要：提出一种面向遮挡的光流计算方法,该方法根据两幅图像的前向光流和图像光强估计后向光流。针对产生遮挡的区域,使用线性插值、通过光强等像素信息选择合适的前向光流加权平均来计算后向光流。针对遮挡消失区域,基于前向光流矢量的方位信息,采用一种有向填充策略来估计后向光流。实验表明,该方法计算光流精度高,并且能正确有效地处理遮挡出现和遮挡消失区域的光流计算问题,从而对现有的光流计算方法进行了改进。An efficient method for estimating occlusion-oriented optical flow was presented,which computes the backward flow of two chronologically successive images based on their forward flow and intensity information.For the occlusion area,the proposed method calculates the backward flow by virtue of linear interpolation and weighted average of the forward flow of some favorable pixels which were selected according to intensity similarity.For the disocclusion area,the proposed method estimates the backward flow using an oriented fill strategy based on the orientation of forward flow.Experiments show that the proposed approach can achieve optical flow with high precision and properly and efficiently compute the optical flow of occluded and disocclusion areas,thus improving the existing optical flow estimation.

关 键 词：光流 后向光流 遮挡 遮挡消失 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]