介绍了一种广角镜头图像畸变的实时校正系统。通过对光学系统畸变原理的分析,采用一定的算法对像素空间的位置进行几何变换,减少了由镜头大视场带来的几何畸变。整个系统以FPGA为核心控制器件,结合数字图像编码解码芯片和SDRAM存储器,可实现视频图像的实时校正。时钟倍频器在系统中可以为SDRAM及其控制模块提供与其它时钟同相位的高频时钟。 A real-time correction system for wide-angle lens distortion is introduced. Through the analysis of the principle of optical system distortion, using a certain algorithm for geometric transformation of the location of the pixel space to reduce the geometric distortion caused by the lens large field of view. The entire system to FPGA as the core control device, combined with digital image encoding and decoding chip and SDRAM memory, real-time video images can be corrected. Clock multiplier in the system for SDRAM and its control module and other clock with the same high-frequency clock.