盲元综合检测和补偿算法

Compositive Blind-pixel Detection and Compensation Algorithm

本文在总结国内外盲元检测和补偿算法的基础上,按照盲元表现形式的不同将其分为死像元、暗电流像元、噪声像元和闪变像元。并利用红外焦平面,对不同参考辐射的响应数据采用了不同的检测算法进行检测。与传统算法比较,该算法考虑了暗电流像元和闪变像元,且分类检测分设标准,检测精度高。利用相邻像元的相关性,提出了一种基于边缘检测和盲元块判断的补偿算法,能较好的保留边缘和补偿盲元块。

By summarizing various algorithms of blind pixels detection and compensation,we can divide blind pixels into four types for their different respondent appearance,which are dead pixels,dark current pixels,noisy pixels and blinking pixels.Different algorithms with different thresholds are proposed to detect different types of blind pixels.Compared with the traditional algorithms,the algorithm takes dark current pixels and blinking pixels into account and has high precision of detection.Based on the pertinence between the adjacent pixels,a compensation algorithm is advanced to detect congregated blind pixels and replace the blind pixels on the edge of image.Experiments show that the algorithm is practical and acceptable.