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数字图像中照度不均匀校正技术研究
引用本文:郑军,徐春广,肖定国,理华,黄卉.数字图像中照度不均匀校正技术研究[J].北京理工大学学报,2003,23(3):285-289.
作者姓名:郑军  徐春广  肖定国  理华  黄卉
作者单位:1. 北京理工大学,机械与车辆工程学院,北京,100081
2. 中科院,声学研究所,北京,100080
3. 中科发展科技股份有限公司,自动检测研究所,北京,100044
基金项目:国家部级科研项目;20051;
摘    要:为了消除数字图像中的照度不均匀性,对现有数字图像的照度不均匀校正技术进行了归类和讨论.分析了这些方法在计算误差上的内在原因,并在此基础上提出了基于小波变换的数字图像照度不均匀校正技术.该技术兼顾了数字图像的频域和空域,使得采用本方法校正后的图像具有品质优,计算误差小和时间消耗较少等特点.

关 键 词:数字图像  照度不均匀校正  小波变换
文章编号:1001-0645(2003)03-0285-05
收稿时间:2002/8/28 0:00:00
修稿时间:2002年8月28日

The Technique of Digit Image's Illumination Uneven Elimination
ZHENG Jun,XU Chun guang,XIAO Ding guo,LI Hua and HUANG Hui.The Technique of Digit Image''s Illumination Uneven Elimination[J].Journal of Beijing Institute of Technology(Natural Science Edition),2003,23(3):285-289.
Authors:ZHENG Jun  XU Chun guang  XIAO Ding guo  LI Hua and HUANG Hui
Affiliation:School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China;School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China;School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China;Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, China;Institute of Automatic Detection, ZhongKe Ltd, Beijing 100044, China
Abstract:Aimed at the elimination of uneven illumination in digital images, existing techniques for the correction of unevenness of illumination are classified and discussed, and the basis of its algorithmic error analyzed. A new for the correction of unevenness elimination technique based on wavelet transference is proposed. By giving attention both to the frequency domain and space domain of the image, this technique results in better quality, less error in the resulting image, and the time spent is also relatively small.
Keywords:digit image  unevenness of illumination and its elimination  wavelet transfer
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