Measurement And Application Of Binocular Color Fusion Boundary In Stereoscopic Displays

With the development of display technology,three-dimensional(3D)stereoscopic display technology has become an important development direction and has been widely applied.However,when viewing three-dimensional images,human eyes usu-ally feel uncomfortable,which greatly limits the further development of stereoscopic display technology.There are many factors affecting the visual comfort of stereoscopic display,such as display equipment,display contents and viewing environment.The influence of color asymmetry on visual comfort cannot be underestimated.In this paper,the characteristics of human stereoscopic color vision related to stereoscopic display technology are studied.The binocular color fusion threshold is obtained by quantitative measurement,and the results are applied to the development of stereoscopic content correction software based on color information,so as to improve the visual comfort of stereoscopic contents.This paper first introduces the color visual characteristics of stereoscopic display,and then designs a binocular color fusion boundary measurement experiment based on the human eye color visual characteristics and visual psychophysics experimental method.In the CIELAB color space,four pairs of color samples with the same satura-tion but opposite hue in the four opposite color directions with the largest hue difference on the equal brightness plane were selected as binocular stimuli.The stereoscopic dis-play of experimental stimulus is characterized by the American spectroradiometer pr-715,which can ensure the accurate control of display color.According to Weber Fisch-er's law,the color difference between left and right eye color sample pairs with 50%fusion probability is taken as the boundary of binocular color fusion in different color directions.Results show:(1)The fusion limits of binocular color in different opposite color directions are different.The fusion limits of binocular color in Red-Green(R-G)and Green Yellow-Red Blue(GY-RB)directions are larger than those in Yellow-Blue(Y-B)and Re-d Yellow-Green Blue(RY-GB)directions;(2)The shape and rotation direction of the ellipse are similar to that of the mac-adam ellipse.The major axis of the ellipse is near the GY-RB direction,and the minor axis is near the RY-GB direction.The average semi-major axis length of the ellipse is27.55?^*₍(6(7),the average length of semi-minor axis is 16.98?^*₍(6(7).Finally,semi global stereo matching algorithm(SGM)is used to get the disparity map of the stereo image,and then the pixels of the corresponding points of the left and right eyes are found according to the disparity map,and the color of the pixels is cor-rected.The corrected color difference is within the range of the binocular color fusion limit measured in the experiment,and then each corrected image is synthesized into a video and played,In order to achieve the purpose of using color information to improve the visual comfort of stereo content.