摘要
针对红外线列扫描系统所特有的垂直于扫描方向的条状噪声,本文采用Tendero所提出的基于中值直方图均衡的校正算法对其进行非均匀性校正。并且在计算中值直方图时,采用IQR加权算子来弥补采用高斯加权算子时所导致的过度平滑问题。实验表明,本算法简单快捷,易于工程实现,不仅可避免一般场景法存在的"鬼影"问题,而且具有较好的图像视觉质量。
A new way to correct non-uniformity （NU） in scanning infrared-type images is proposed, which is kind of scene-based NUC proposed by Tendero, namely, midway histogram equitation. And IQR is used instead of gauss kernel while calculating its midway histogram. The strength of this approach lies in its simplicity and low computational cost. It needs no test-pattern or calibration and produces no ＂ghost-artifact＂. Experimental results indicate that this method can be well used in IR scanning system.
作者
周妮
张承宏
李范鸣
ZHOU Ni ZHANG Chenghong LI Fanming(Shanghai Institute of Technical Physics, Chinese Academy of Science, Shanghai 200083, Chin)
出处
《红外技术》
CSCD
北大核心
2017年第1期58-61,共4页
Infrared Technology
