Research On Key Technologies Of Real-time Ultra High Definition Glasses-free 3D Display

In recent years,Glasses-free 3D display technology has gradually entered the public view.However,most of glasses-free 3D display devices at present still have defects such as low resolution,narrow FOV(field of view),and the real time is not well supported.These defects seriously restricted the popularity of glasses-free 3D display products.In order to solve the problems above,this dissertation discusses the key technologies of real-time ultra-high-definition glasses-free 3D display,and focuses on the design of multi-view rendering based on DIBR and real-time ultra-high-definition glasses-free 3D display system,so as to provide support for the applications of glasses-free 3D display technology.This dissertation first introduces the basic principle of glasses-free 3D display.Detailed information of the lenticular lens glasses-free 3D display technology used in this dissertation is also given.Then,the multi-view rendering based on depth-image-based rendering(DIBR)is studied,and the symmetrical shift-sensor camera setup and the hardware architecture for multi-view rendering are given.Next,FPGA architecture for real-time ultra-high-definition glasses-free 3D display system is proposed,the hardware implementation of the system and each sub-module is presented,the system as well as sub-modules are simulated.Finally,the stereo image quality of the images got from simulation is evaluated.The main research results of this dissertation include:(1)As for the resolution conversion of the V + D format video,we find that the simple column repetition method can get better image quality in contrast to the complex interpolation method.Since the column repetition method is extremely simple,this finding simplifies the implementation of the hardware,while also ensuring the quality of the image.(2)The symmetrical shift-sensor camera setup is proposed,and the three-dimensional image transformation equations suitable for multi-view view rendering are given according to this setup,which simplifies the realization of 3D image warping.(3)The differences between left and right view processing of the modules(such as 3D image warping,hole filling and pixel copy)in multi-view rendering are analyzed,and the algorithm of multi-view rendering based on DIBR is given.This algorithm can reduce the difference between left and right view rendering as much as possible.Hence,it can simplify the hardware implementation as much as possible.Based on this algorithm,the hardware implementation of multi-view rendering is given.(4)A FPGA architecture for real-time ultra-high-definition glasses-free 3D display system based on DIBR is designed.In this architecture,the row-level pipelining technique is used,hence it can fulfil the corresponding function without DDR memory,thus simplifying the complexity of hardware implementation.(5)A subjective evaluation method for stereo image quality is proposed.This method can be used to determine the system parameter setting for quite good image quality.This dissertation seeks to innovate the research methods and ideas.The research results will provide a new method of practical applications of glasses-free 3D display technology.