一种新的非均匀照度图像增强方法

Novel method of uneven illumination image enhancement

构造一类基于双层位平面的亮度变换函数,结合快速局部值直方图均衡化算法,很好地解决了非均匀照度下图像对比度的增强问题。该算法首先提取图像的亮度位平面和对比度位平面,用这两个位平面对原始图像进行亮度变换,然后,利用快速局部值方图均衡化算法对变换后的图像进行增强。

A brightness transfer function is constructed based on the double bit-planes.Using this function and the fast partial histogram equalization,which solves the problem of uneven illumination image enhancement.The algorithm first extracts the brightness and contrast bit-planes,and using these bit-planes to transform the brightness of original image,and then,using fast partial histogram equalization to enhance the transformed image.