Infrared and Laser Engineering, Volume. 44, Issue 3, 821(2015)

Adaptive blind pixel detection and compensation for IRFPA based on fuzzy median filter

Leng Hanbing*, Gong Zhendong, Xie Qingsheng, Fan Zheyuan, and Wu Dengshan
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    Blind pixels of IRFPA consist of fixed bad pixel and random bad pixel, the former is caused by material and manufacture defect, while the latter is mainly caused by temperature drift. Scene-based blind pixel detection and compensation algorithm is the effective method to eliminate these bad pixels and increase image quality. Aiming at the defect that the current filter-based detection methods can′t distinguish random blind pixels and weak point targets, the response and noise feature of random blind pixels were first analyzed, and a new adaptive blind pixel detection and compensation algorithm based on fuzzy median and temporal accumulation was proposed. Fuzzy median filter was used to extract the potential blind pixels from scenes, then the exact distribution of fixed and random blind pixels were determined by temporal accumulation, and blind pixel compensation was performed finally. The experiments show that the proposed algorithm can effectively correct bad pixels while avoid misjudging weak point targets.

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    Leng Hanbing, Gong Zhendong, Xie Qingsheng, Fan Zheyuan, Wu Dengshan. Adaptive blind pixel detection and compensation for IRFPA based on fuzzy median filter[J]. Infrared and Laser Engineering, 2015, 44(3): 821

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    Paper Information

    Category: 红外技术及应用

    Received: Jul. 10, 2014

    Accepted: Aug. 12, 2014

    Published Online: Jan. 26, 2016

    The Author Email: Hanbing Leng (lenghanbing@opt.ac.cn)

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