红外与毫米波学报, 2015, 34 (4): 0401, 网络出版: 2015-10-22
基于多尺度时域矩匹配的自适应非均匀性校正算法
Adaptive nonuniformity correction algorithm based on multiscale temporal moment matching
非均匀性校正 时域高通滤波 多尺度时域矩匹配 拉普拉斯金字塔 鬼影 nonuniformity correction temporal high-pass filter multiscale temporal moment matching Laplacian pyramid ghosting artifacts
摘要
非制冷红外焦平面阵列的固定图案噪声具有与条带噪声相类似的特性.通过对矩匹配算法和时域高通滤波算法的研究, 提出了一种多尺度时域矩匹配非均匀性校正算法.首先利用高斯金字塔对相邻帧待校正图像进行全局运动估计, 然后对各尺度的高斯金字塔和拉普拉斯金字塔分别进行时域矩匹配.对真实红外图像序列的实验结果表明, 该算法在提高收敛速度的同时可有效减少鬼影现象的出现.
Abstract
The fixed pattern noise of uncooled infrared focal plane arrays has the similar characteristics with the stripe noise. By researching the moment matching and temporal high-pass filter, a novel multiscale temporal moment matching nonuniformity correction algorithm was proposed. In the proposed algorithm, global motion was first identified by the Gaussian pyramid of the adjacent uncorrected images. Then the temporal moment matching was performed in all levels of Gaussian pyramids and Laplacian pyramids. The experimental results with the real infrared video sequences have shown that the proposed algorithm can significantly increase the convergence speed and reduce the ghosting artifacts.
冷寒冰, 胡炳樑, 周祚峰, 唐利孬, 张建, 闫阿奇. 基于多尺度时域矩匹配的自适应非均匀性校正算法[J]. 红外与毫米波学报, 2015, 34(4): 0401. LENG Han-Bing, HU Bing-Liang, ZHOU Zuo-Feng, TANG Li-Nao, ZHANG Jian, YAN A-Qi. Adaptive nonuniformity correction algorithm based on multiscale temporal moment matching[J]. Journal of Infrared and Millimeter Waves, 2015, 34(4): 0401.