Stereo television and movie are a revolution at this stage for their stunning visual experience. In this kind of three-dimensional display system,the appropriate perceived depth will produce a good viewing experience,on the con-trary, it will lead to visual fatigue, and even dizziness and some other kinds of discomforts. Therefore, it is necessary to calculate perceived depth before display. In order to solve this problem,the factors that affect the perceived depth in 3D display are analyzed, and a method of parallax computation based on feature points is proposed. The feasibility of our method is verified by the experiment,and the stereo perceived depth of the interested point is calculated taking left and right eye images as input. The experimental results show that the calculated perceived depth is always consistent with the subjective perception of all testers, and our research can be used to guide the stereoscopic shooting and the stereoscopic display in order to achieve better results.%三维立体电视和电影的立体真实感能够带给人们震撼的视觉体验,是数字时代的新宠.在这类三维显示系统中,恰当的立体感知深度将产生好的观赏体验,反之,将导致视疲劳、甚至眩晕等不适感.因此,很有必要对立体感知深度进行预先解算.针对这一问题,对于3D显示中立体感知深度的影响因素进行分析,提出基于特征点的视差计算方法,推导立体感知深度与视差等多个参数的定量关系.实验验证了立体感知深度定量计算方法的可行性,基于左右眼图像,计算得到了感兴趣点的立体感知深度.实验表明:计算得到的立体深度与测试者主观感受具有较好的一致性;研究结果可用于指导立体拍摄以及立体显示以便达到最佳立体效果.
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