立体视频镜头误差检测和质量分析  

Lens Distortion Detection and Quality Analysis for Stereoscopic Videos

作　　者：董全武[1] 周同[1,2,3] 郭宗明[1] 肖建国[1] 

机构地区：[1]北京大学计算机科学技术研究所,北京100080 [2]北大方正集团有限公司,北京100871 [3]中关村科技园区海淀园企业博士后工作站,北京100089

出　　处：《北京大学学报（自然科学版）》2014年第6期998-1006,共9页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：863计划(2013AA013504);国家科技支撑项目(2012BAH18B03)资助

摘　　要：针对立体视频在拍摄过程中由于镜头配置和调整导致的立体效果的失真,如左右眼图像的高度误差、旋转误差、尺寸误差、亮度色度误差等,提出一种立体镜头误差检测的方法。在对左右眼图像进行立体匹配的基础上,根据图像的几何关系计算每对匹配特征点的各种误差值,然后计算所有误差值的统计特征,得到图像的总体误差值。在收录的实际拍摄的3DTV电视节目视频库中进行的实验表明,该方法能够有效识别存在立体镜头误差的视频片段。进一步的主观视频质量实验分析了立体镜头误差与主观质量的关系。The authors present a method to detect the stereo lens distortions, such as vertical misalignment, camera rotation, unsynchronized zooming, and color misalignment, which are introduced during the process of video capturing. Based on the result of stereoscopic correspondence, the geometrical errors are calculated for every matched feature point pairs. The overall lens distortion parameters are deduced from the statistical features of all points. Experiments are set on a video database which consists of video clips from an on-air 3DTV channel. Experiment result shows that the method is effective to find out distorted video clips. The subjective quality assessment experiment reveals some relationships between the lens distortions and the perceptual video quality.

关 键 词：立体视频 镜头失真 3DTV 视频质量 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]