Research On Autostereoscopic Display Based On Zynq-7000 Embedded System

Autostereoscopic display technology,also known as free stereoscopic display technology,is a kind of technology which enables viewers to view stereoscopic images without wearing special visual aids,including the process of recording,transmission and display.Installing cylindrical lens grating in front of the traditional display is one of the more feasible technologies for autostereoscopic display.However,the conversion from 2D images to 3D causes a large of calculation and has high demand for the performance of both software and hardware.Therefore,the traditional conversion method has the disadvantages of insufficient image processing speed,high difficulty,high transmission bandwidth demanding and poor real-time performance.In this thesis,a four-view autostereoscopic static image display system and a real-time double-view autostereoscopic video display system were constructed by using Zynq-7000 AP So C.The main work of this thesis is as follows:Firstly,combined with the principle of granting autostereoscopic display technology and independent view area theory,the four-view display was taken as an example,the principle and pixel distribution characteristics of multi-view naked-eye3 D display were obtained.Secondly,a four-view stereoscopic image display system based on optical granting autostereoscopic display technology was achieved by using DDR3 as the cache device and Zynq embedded chip which served as the controller of the system and implemented the logic functions of the system.Taking the advantage of abundant peripheral interfaces in PS of Zynq-7000 embedded system,this thesis got stereo image pair and made the pixels rearranged in PS.Using AXI4 protocol,the highspeed intra-chip interconnection communication with low latency,PL read the fourview stereoscopic visual image from DDR3 at high speed.Designed the driving timing of display with HDMI interface and realized TMDS protocol in Verilog hardware description language,and then,a four-view stereoscopic image display system has been fulfilled.The system has the advantages of portable,high-speed realtime image processing.Finally,based on the work done previously,added the binocular OV5640 image sensor module.This thesis studied the synchronous configuration method and output timing of the module,and dynamic synchronous caching method for video images.Using Vivado HLS tool,an IP core designed in C++ and packaged with AXI4-Stream interface,which can rearrange the pixels carried by AXI4-Stream,has been generated.Then the FPGA hardware acceleration of image processing has been implemented.Finally,a real-time naked-eye 3D video display system has been obtained.Through the study of the display system,the specific hardware and software implementation architecture of static display and video dynamic display of multi-view autostereoscopic visual images can be obtained,which can provide design reference for IC for 2D to naked-eye 3D processing.