提出了新颖的红外图像直方图双向均衡技术.该技术在进行直方图均衡化处理的同时,消除灰度冗余,并在整个显示范围内对图像灰度级进行等间距排列,从而获得灰度连续的红外图像,解决了热像仪信号处理中输入信号大动态范围和显示输出的小动态范围的矛盾.实验表明该技术能够使红外图像的细节和清晰度得到明显的增强.

A new technique of histogram double equalization for the infrared thermal image is presented. At the same time of having histogram equalization, the gray redundance is removed and the gray level is reconstructed with equal interval in the whole display region. Then the continuous gray images are obtained. The problem of the large dynamic range of input signal against the small dynamic range of output display is solved in the signal processing in infrared thermal image system. Theoretical and experimental results