Auto Stereoscopic 3D Display System Based On FPGA Control

On the basis of two-dimensional display technology,autostereoscopic 3D display technology is a technology that constructs parallax image or simulates light field with optical devices and computer image processing,and finally forms three-dimensional vision in human eyes and brain.Field-Programmable Gate Array(Field-Programmable Gate Array)chips have unique design patterns,powerful parallel execution capabilities and high operational stability,and play an increasingly important role in the design of digital programmable circuits.The autostereoscopic 3D display system based on FPGA control can control optical devices more precisely and flexibly,so as to achieve better three-dimensional visual effect.Firstly,this paper introduces the research background and main technical realization scheme of autostereoscopic 3D display technology,then elaborates the principle of human stereo imag:ing and slit grating three-dimensional display in detail,then builds the hardware circuit realization platform of slit grating autostereoscopic 3D display system based on FPGA control,and finally observes the effect of autostereoscopic 3D display of the system and its existence in the system.The problems are summarized and analyzed.The main work of this paper can be summarized as follows:(1)The combination of static and dynamic slit grating can not only control the transmittance/opacity of slit grating fringes,but also ensure that the width of slit grating fringes can meet the experimental requirements at the current technological level.(2)In order to verify the principle of three-dimensional stereo imaging of slit grating bare-eye display technology,which mainly refers to the separation of left and right eye views by slit grating,this paper proposes a convenient and fast method to extract video frame signal,that is,to extract video frame signal by identifying the brightness change of the source identification area by photoresistor.(3)The driving voltage of slit grating is separated from the control signal,so that the voltage at both ends of the slit grating is stable and adjustable,and the brightness of the image is stable and optimal.(4)Build and debug the hardware circuit implementation platform,observe the three-dimensional naked eye display effect of the system,analyze the problems existing in the control circuit and propose the improvement direction.