In stereoscopic displays

the stereoscopic display effect is related to the parallax of stereo image pairs

and parallax is affected by cameras layout when the parallax images are captured. In the paper

camera calibration technique for binocular stereo vision system and the spatial geometric relationship are used to determine the position relation between any two cameras. And then the calibration result is applied to adjust the spatial position of the two cameras continually in order to make the two optical axes parallel to each other approximately. As a result

the image pairs acquired can guarantee a better stereoscopic display effect. Finally

the allowable variation range of the spatial angle between the two cameras is yielded experimentally. The results can be used to conduct the adjustment for the photography system of autostereoscopic display.