基于离散最优传输的多层次自适应颜色传输  

Multiscale adaptive color transfer by discrete optimal transport

作　　者：李海凤 段琳 崔丽[1] LI Haifeng;DUAN Lin;CUI Li(School of Mathematical Sciences,Beijing Normal University,100875,Beijing,China)

机构地区：[1]北京师范大学数学科学学院,北京100875

出　　处：《北京师范大学学报（自然科学版）》2018年第4期440-448,共9页Journal of Beijing Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(11001017);北京师范大学自主科研基金资助项目(310421102)

摘　　要：基于离散最优传输理论和小波分析方法提出一种自适应的多尺度颜色传输算法,首先将原图像和目标图像由RGB空间转到CIELab空间,然后分通道对2张图像进行自适应层数的小波分解,在每个层次上利用加权的离散最优传输进行传输,并通过设置传输比例参数使得用户可根据自身需求调整颜色传输的程度,最后将各层次、各通道的传输结果整合,实现2张图像之间的颜色传输.实验结果表明,该算法与已有经典算法相比,其颜色传输效果既平滑自然,又能较好地保持纹理细节.A multiscale adaptive color transfer algorithm based on discrete optimal transport and wavelet analysis is proposed.Source image and target image are first converted to CIELab color space.The two images are then decomposed into adaptive levels with wavelet.The transmission is implemented on each level with discrete optimal transport,and a weight parameter is set to allow users to decide the color transfer degree according to their own need.Finally,each level and each channel are combined together,to accomplish color transfer.Output images by this algorithm have been found to be more natural and smoother than those obtained with classical color transfer algorithm.

关 键 词：颜色传输 最优传输 小波分析 多尺度 

分 类 号：TP306[自动化与计算机技术—计算机系统结构]