Study on 3D Motion-in-Depth Perception Based on Binocular Vision

Abstract

Obtaining stereoscopic information is one of the basic abilities of human beings to perceive the world.Through stereo vision,we can judge the shape,size,distance,relative position of objects,as well as the direction and speed of changes in object motion information.Among them,the perception information of moving objects plays an important role in stereo vision perception.The acquisition of motion visual information is not only the key ability of biological vision systems to survive in a dynamic world,but also an important means for artificial vision systems to efficiently process stereoscopic video.Therefore,in order to design a 3D depth motion perception model that conforms to the visual characteristics of human eyes,it is necessary to explicitly excavate the salient features of human perception of stereoscopic motion,so as to design experiments to explore.In this paper,motion stereo videos are designed as visual stimuli based on monocular and binocular cues,and subjective experiments are designed using the control variable method.The experiment explores two parts:the influence of the relative distance between the target and the reference sphere on the subjects’ perception ability,and the relationship between the actual movement direction of the target and the subjects’ perception direction.Experimental data is analyzed by using two behavioral measures:the percentage of successfully intercepted targets and the perceived bias.The conclusion shows that,firstly,the smaller the relative distance between the target and the reference,the higher the interception success rate.The target velocity and the reference’s motion radius affect the relative distance of the target and reference spheres.This indicates that the relative positional relationship between the target and the reference plays an important role in the human eye’s perception of moving objects.Motion perception has a certain relativity,and motion is easier to perceive at the position with reference point and the position close to the reference point.Second,we find that perceptions elicited by deep motion are more pronounced than those induced by lateral motion.The correct intercept rate of perceived depth direction is 42.67%～47.01% higher than that of lateral motion.This shows that the visual stimulation brought by deep motion is more obvious,and the perception ability of objects moving in different directions is asymmetric.However,when there is an interception error in the depth direction,the perceptual deviation is larger,and the deviation is about 0.1583~0.3665.This study explores the salient features of human perception of motion and provides insights into the observer’s process of motion perception in 3D environments.This study explores the significant characteristics of human motion perception,and provides a new subjective contrast standard to judge the perception effect of 3D motion perception model for the subsequent design of 3D motion perception model work,which makes the original stereo perception ability index more refined.

Keywords

• human visual system|3d video|motion perception|binocular parallax|motion-in-depth