面向无缝影像数据库应用的一种新的光学遥感影像色彩平衡方法

A NEW COLOR BALANCE METHOD FOR LARGE-SCALE SEAMLESS IMAGE DATABASE

针对建立大型无缝影像数据库的影像数据特点,在深入分析与比较现有处理方法的基础上,基于W allis变换,提出了一种改进的色彩平衡处理方法。该方法可以兼顾整体信息与局部信息,在处理大型无缝影像数据库色彩平衡问题时,既可以减小每张影像的处理误差,又可以消除处理误差的空间传递和积累问题,还便于辐射分辨率的保持。实验表明,该方法可以有效解决大型无缝影像数据库的色彩平衡问题。

Color balance between images is one of the key problems in building large - scale seamless image database. Based on analyzing characteristics of present methods for color balance and for building of large - scale seamless image database, this paper proposals Taking into account both local and global an improved color balance method according to Wallis adaptive filter information, the method can not only diminish the processing error for each image but also remove the spatial transfer and the accumulation of the processing error. With this method, the preservation of the radiometric resolution becomes easy. Experiments show that this method can diminish the color differences between images and solve the color balance problem effectively.