摘要
为了提高夜间图像的清晰度，文中提出了一种适用于此类图像增强的新算法，其特点为： １） 将对比度增强算法与直方图均衡算法级联，使得图中的局部信息与全局信息在增强时都能被利用； ２） 经对各种函数的实际处理效果进行比较，提出了一个适合夜间图像增强的对比度变换函数。
In order to improve the clearness of images captured at night, a new enhancement algorithm was proposed in this paper. Its characters are: 1) enhancing the dark image with contrast enhancement and histogram equalization in series. Both the local and global information can be used; 2) after comparing the results of different functions, a contrast transforming function which is suited to deal with dark image is proposed. The new method shows good performance in dealing with night vision images.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1999年第9期79-80,共2页
Journal of Tsinghua University(Science and Technology)
关键词
图像增强
灰度变换
对比度增强
夜间图像
清晰度
image enhancement
gray transformation
contrast enhancement
night vision
