基于FPGA的鱼眼图像校正系统设计  

Design of fisheye image correction system based on FPGA

作　　者：徐鹏程 龚元明 XU Peng cheng;GONG Yuan ming(School of Mechanical and Automobile Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学机械与汽车工程学院

出　　处：《电子设计工程》2019年第22期157-161,共5页Electronic Design Engineering

摘　　要：针对目前使用FPGA实现鱼眼校正算法时占用资源多以及延时长等问题,本文提出并设计了一种基于FPGA的鱼眼图像校正系统。鱼眼校正算法采用球面等距投影法,使用查表的方式在FPGA中实现。通过读写片外SDRAM的方式来实现查表功能。实验测试表明,该系统不仅能够完成鱼眼校正的任务,而且相较于同平台上基于Cordic算法的系统而言,更节省硬件资源和具有更好的实时性。Aiming at the problems of using the FPGA to implement the fisheye correction algorithm and occupying more resources and long delay,this paper proposes and designs a fisheye image correction system based on FPGA. The fisheye correction algorithm uses a spherical equidistant projection method and is implemented in an FPGA using a look-up table. The look-up table function is realized by reading and writing off-chip SDRAM. Experimental tests show that the system not only can complete the task of fisheye correction,but also saves hardware resources and has better real-time performance than the Cordic algorithm-based system on the same platform.

关 键 词：现场可编程门阵列 鱼眼图像校正 球面等距投影 查表法 SDRAM控制器 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]