The Influence Of The Rigid Constraint Between Binocularly Matched And Unmatched Information On Perceived Depth Resulted From Temporal Interocular Asynchrony

As the advanced function of human vision,stereoscopic vision exhibits a 3-dimension world by acquiring and processing depth cues.It has been well known that binocular disparity is the main reason of stereoscopic vision and lots of applications based on this principle are changing our life,like 3D movie.Meanwhile,with the rapid development of computer,artificial stereo vision with binocular disparity principle has been improving the levels of machine intelligence.Since occlusions are often found in visual scenes,because of binocular disparity,there will be monocularly visible areas at the edge of the occluding surfaces.The binocularly matched information and unmatched information in the occlusion scene also affect depth perception strongly.Binocularly unmatched information can only be used for the perception of qualitative depth,and quantitative depth perception occurs when there’s matched information at the same time.When we perceive the object as a whole,if a non-rigid transformation affects its three-dimensional nature,it will affect our reconstruction of its three-dimensional structure.This research is to solve this problem out of earlier experiments’ results,studying the rigid constraint between the binocularly matched and unmatched information,and whether altering the rigid constraint will affect their three-dimensional nature,thus affect the participants’ depth perception.This research is based on Ni et al(2010)s’ experiments.First,we replaced traditional disparity clue with quasi disparity generated by temporal inter-ocular asynchrony to deliver quantitative depth perception.On the other hand,we use three columns of dots as binocular matched features which become elastic through the difference of velocities to create non-rigid transformation.The results show that,in an appropriate range of stretching ratios,subjects’ abilities of quantitative depth perception get weaker as the stretching ratio increases(the extent of the non-rigid transformation increases).Our experiment proves that there is a rigid constraint between the binocular matched and unmatched information while we perceive them as a whole and use it a metric reference,breaking it will affect its three-dimensional structure,thus affects our perception and repress our ability of quantitative depth perception.Under extreme conditions,there is only qualitative depth perception left.This research provides an experimental basis for how the visual system can utilize the binocularly matched the unmatched information to obtain depth perception,which will help further exploring the mechanism of human’s stereopsis.