立体图像的视觉感知质量无参考评价方法  

A No-reference Assessment Method of Visual Perception Quality for Stereoscopic Images

作　　者：兰诚栋[1] 杨秀芝[1] 陈建[1] 

机构地区：[1]福州大学物理与信息工程学院,福州350108

出　　处：《计算机辅助设计与图形学学报》2014年第8期1333-1338,共6页Journal of Computer-Aided Design & Computer Graphics

基　　金：福建省自然科学基金面上项目(2013J01234);福建省产学研重大专项(2012H6012)

摘　　要：为了提高立体图像客观质量评价与人眼感知结果的一致性,改善立体内容的视觉体验效果,考虑到人眼对立体图中不同区域的关注度和不同深度值的立体感都具有差异性的问题,提出基于视觉感知特性的立体质量评价方法.首先引入视觉显著度模型选取人眼感兴趣区域,生成该区域的深度图;然后通过深度最小可觉察误差模型确定人眼对深度图像素值的可感知范围和敏感度因子;最后计算深度的相对层次,得出立体感客观质量值.实验结果表明,该方法的结果与主观质量值之间的相关系数高于0.9,均方误差低于5.4,两者存在较好的一致性,并且优于已有方法的结果.To improve the consistency of the objective quality and the human eye perception of stereoscopic images,and enhance the visual experience of the stereoscopic content,we take into account the problem of differences existing in the attention of the different regions of stereoscopic images and stereoscopic sense of different depth values for the human eye,and propose a stereoscopic quality evaluation method based on visual perceptual characteristics.Firstly,it introduces a visual saliency model to select region of interest,and then generates a depth map for the region.Secondly,the perceptible range and the sensitivity factor of depth map pixels are determined in terms of the just noticeable difference in depth model.Finally,the stereoscopic objective quality scores are obtained by computing relative depth hierarchy.Experimental results show that the correlation coefficient between the proposed method and subjective quality is higher than 0.9,and the mean square error is less than5.4.There is good consistency between the two,and the results are better than the state-of-the-art methods.

关 键 词：立体视频 质量评价 视觉感知特性 

分 类 号：TN919.81[电子电信—通信与信息系统]