应用光学, 2011, 32 (1): 161, 网络出版: 2011-04-28  

全向激光告警系统中SWIRFPA的盲元补偿算法

Blind-pixel compensation algorithm for SWIRFPA in omni-directional laser warning system
作者单位
军械工程学院光学与电子工程系, 河北 石家庄 050003
摘要
针对全向激光告警系统中SWIRFPA的盲元补偿问题,提出一种基于邻域灰度特性的加权插值盲元补偿算法。阐述该算法的基本思想和原理,根据盲元邻域灰度值的分布情况,赋予每个邻域像元与其灰度值相关的权重,进而完成盲元补偿。从主客观2个角度对补偿效果进行评价。结果表明: 与传统的邻域平均法和中值滤波法相比,加权插值盲元补偿算法对全向激光告警系统中SWIRFPA的盲元补偿效果最好,不仅使盲元补偿值与其邻域偏差最小,而且减小了盲元对系统探测的影响,有效提高了系统性能。
Abstract
In order to implement blind-pixel compensation for IRFPA in omni-directional laser warning system, a new weighted interpolation algorithm based on neighborhood grey character is presented. The impact of blind-pixel on the system was analyzed, the basic concept and principle of the algorithm were elaborated and analyzed, and the algorithm was verified by experimental simulation. Finally, the blind-pixel compensation result was evaluated subjectively and objectively. Compared with the conventional algorithms of neighborhood averaging and mid-value filter, the new algorithm is more suitable for the blind-pixel compensation of omni-directional laser warning system. The blind-pixel compensation offset of the new algorithm is smaller than those of the other two algorithms, and it reduces the impact of blind-pixel influence on the system, which can improve the system working performance effectively.

黄富瑜, 何永强, 应家驹, 严世华, 董红军. 全向激光告警系统中SWIRFPA的盲元补偿算法[J]. 应用光学, 2011, 32(1): 161. HUANG Fu-yu, HE Yong-qiang, YING Jia-ju, YAN Shi-hua, DONG Hong-jun. Blind-pixel compensation algorithm for SWIRFPA in omni-directional laser warning system[J]. Journal of Applied Optics, 2011, 32(1): 161.

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