红外焦平面阵列盲元补偿算法研究  

Study on Blind-pixel Compensation Algorithm for Infrared Focal Plane Arrays

作　　者：朱红[1] 刘永进[2] 赵亦工[2] 

机构地区：[1]西安电子科技大学机电工程学院 [2]西安电子科技大学电子工程学院,西安710071

出　　处：《半导体光电》2009年第1期156-159,共4页Semiconductor Optoelectronics

基　　金：国家自然科学基金资助项目(60572151)

摘　　要：提出了一种补偿盲元的新算法,它首先利用自适应中值滤波检测红外焦平面阵列上可能的盲元点,然后再使用细节保持变分法对所挑出的盲元点进行补偿。这样,由于既保护了边缘又抑制了噪声,因此恢复出的图像质量明显优于传统的平滑滤波方法。仿真结果表明,本算法对噪声水平为25%的图像进行恢复后,其峰值信噪比仍可达到34.918 dB。A novel algorithm is described for compensating blind pixels in infrared focal plane arrays, which is separated into two stages. First, an adaptive median filter is exploited to identify pixels which are likely to be blind. Second, these bad-detector candidates are compensated by using a detail-preserving variational method. Due to edge preservation and noise suppression, the proposed algorithm shows a better performance compared with traditional smoothing filters. Moreover, the experimental results indicate that images with a noise level 25 % can be restored by this method, and the peak signal--to--noise ratio can be up to 34. 918 dB.

关 键 词：红外焦平面阵列 盲元 自适应中值滤波 细节保持变分法 

分 类 号：TN215[电子电信—物理电子学]