摘要
针对暗原色先验模型对于天空明亮区域不适应,透射率估计偏小,出现彩色失真现象,提出一种新的透射率修正方法.根据亮度大小,将图像的天空区与非天空区分割,求出天空区透射率上限阈值作为起始修正值,并给出了一个简单的透射率修正函数式.方法算法简单,计算量小.实验结果表明,在去雾效果和改善天空明亮区域彩色失真方面优于目前流行算法.
Aiming at the problem that dark color prior model does not suit the bright sky region,the transmission is too small,and color distortion occurs,a new transmission correction method has been proposed. According to the size of the brightness,the sky region and non- sky region are segmented. The transmission upper threshold of the sky region is obtained as starting correction value. Also a simple transmission correction function is given. This method is simple and the calculation is small. The experimental results show that it is superior to the currently popular algorithm in image daze removal effect and improving the color distortion of the sky bright area.
出处
《嘉应学院学报》
2016年第8期18-23,共6页
Journal of Jiaying University
关键词
图像去雾
暗原色先验
透射率
天空区
image daze removal
dark channel prior
transmission
sky region
