Research On A New Method To Minimize The Crosstalk Of Eye-tracking Auto-stereoscopic Display By Rearranging RGB Sub-pixels

With the rapid development of display technology, auto-stereoscopic display(commonly known as the naked-eye3D) emerges as the time requires in order to getrid of the lousy3D glasses. Currently the main way to achieve auto-stereoscopic displayis mostly by utilizing the gratings. and in traditional grating auto-stereoscopic displays,the head movement would lead to the position of the eyes shifted beyond the best viewpoint, where right and left eyes would observe3D images with crosstalk, or evenreverse left and right eyes’ images, that is to say the crosstalk would be100%.To solve the problems above, the novel auto-stereoscopic display scheme waspresented in this paper for the individual user, which was by migration of the contentsof the RGB sub-pixels in order to tracing the motion of head, so that the errors of3dimage in left and right eyes would be compensated.The main contents are:1． The human visual system is analyzed in order to get the working principle ofbinocular parallax and the perception of three-dimensional depth information, thenecessary condition of how a display device could realize the3D stereoscopic display issummed. the display principles of grating stereoscopic display in both barrier andlenticular are studied in order to build a grating stereoscopic display prototype.2． This dissertation analyzes the reason of how the crosstalk occurs, according tothe definition of the crosstalk, a crosstalk model is set up in Matlab, and the spatialdistribution of crosstalk is derived. The eye tracking auto-stereoscopic display schemefor the individual user was presented in this paper, in order to minimize the crosstalk ofauto-stereoscopic displays with parallax barrier when the viewer moves horizontally, amethod of rearranging the RGB sub-pixels along with the movement is proposed.3．The operation principle and the crosstalk formula of the eye tracking displayscreen were given, both expressed in traditional grating and in sub-pixel rearrangingschematics. This paper also presented the results of Matlab calculation in the terms ofthe crosstalk distribution at the best veiw distance in both traditional and proposedschematics. The result simulated by Tracepro confirmed that the approach suggested in this paper was able to follow the correct right eye and left eye images’ shift, and thecrosstalk of auto-stereoscopic display caused by head movement will be reduced oreven eliminated(16.7%max), which ensures the better3D experiences will be obtainedat the designed view distance.4．According to the principle of auto-stereoscopic display based on the barrierparallax, a auto-stereoscopic display prototype is developed. a video processinghardware platform based on FPGA is built up to transform the3D video in ordinaryformat into the one required by the display prototype we built to realize the naked-eye3D display. via tracing the position of the eyes, RGB sub-pixels accordingly migratedby the FPGA to compensate relatively shift of physical location of the view point,thereby crosstalk of the right and left images caused by the movement of the head wascorrected.