基于FPGA技术的计算全息研究

摘要

为了提高计算全息图的运算速率,根据现场可编程门阵列技术的并行处理特性,提出了一种基于现场可编程门阵列技术的计算全息实现方法.利用该方法分别制作了点光源和2维图像的菲涅耳计算全息图,并由所生成的全息图再现出原始图像.结果表明,用现场可编程门阵列技术实现分辨率为50×50的全息图的运算速度是传统MATLAB实现的165倍.该研究结果对实现计算全息的实时性具有重要的意义.%A method based on parallel processing of field programmable gate array (FPGA) technology was put forward to accelerate the computation speed of computer-generated hologram (CGH). Its Fresnel CGH of a point and two-dimension images were produced particularly and the numerical reconstruction of CGH was realized. The experimental results show that the computational speed of a resolution of SO x SO hologram based on FPGA is 165-fold of traditional MATLAB implementation. The study is helpful for implementing real-time CGH.