摘要
针对红外测量图像分段灰度变换方法中变换点确定困难的问题,利用直方图累加的原理,提出了一种分别从高、低两个灰度级方向分别寻找灰度跳变点作为分段变换点的线性灰度变换方法,实现对红外图像不同灰度区间的拉伸和抑制处理。该方法算法简单,计算量小,适合硬件实现。实验结果表明:红外图像增强效果明显,灰度均匀,能够较好地保持图像细节,算法计算效率高。
In order to determine the transformation point in piecewise linear transformation of infrared measurement images, a linear gray scale transforming method for searching the transformation points from both the high and low gray scales is proposed with the help of the accumulative principle of histogram, and the infrared images at different gray scale intervals are thus stretched and restrained. The proposed method is simple in calculation and suitable for hardware implementation. The experimental results verified the efficiency and the enhancing power of the method. The infrared images transformed with it are evenly scaled and the details are well maintained.
出处
《光电子技术》
CAS
北大核心
2011年第4期236-239,共4页
Optoelectronic Technology
关键词
线性变换
测量图像
直方图
图像增强
Linear Transformation
Measurement Images
Histogram
Image Enhancement
