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.
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.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2003年第3期285-289,共5页
Transactions of Beijing Institute of Technology
基金
国家部委基金资助项目(20051)
关键词
数字图像
照度不均匀校正
小波变换
digit image
unevenness of illumination and its elimination
wavelet transfer
