一种基于压缩视频的红外图像预处理算法  

Infrared image preprocessing algorithm for compressed video

作　　者：胡永生[1] 陈钱[1] 

机构地区：[1]南京理工大学电光学院,江苏南京210094

出　　处：《光电工程》2007年第5期136-139,144,共5页Opto-Electronic Engineering

摘　　要：文章讨论了在DCT域中进行红外视频图像预处理的可能性,并提出了一种基于DCT域的压缩视频预处理算法。该算法通过DCT域低通滤波、系数变换和对比度拉伸实现了红外图像的增强处理。仿真结果表明,提出的算法克服了对视频压缩、解压再处理的弊端,提高了系统的整体性能和响应速度,改善了视频图像的视觉效果。The probability of preprocessing IR video image and compressing video synchronously were discussed, Then an IR image preprocessing algorithm for compressed video in the Discrete Cosine Transform （DCT） domain was presented, In this algorithm, compressed IR image was enhanced by low-pass filtering, coefficient transform and contrast stretching in DCT domain. Simulation result shows that the algorithm throws off the time-consuming process of compressing- decompressing-processing, upgrades the performance and responding speed and improves the visual effect of video,

关 键 词：视频压缩 视频图像处理 DCT变换域 图像预处理 图像增强 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]