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基于像素级辐射自校准的红外图像非均匀性校正改进方法

王杰 洪闻青 葛朋 王晓东 潘超

王杰, 洪闻青, 葛朋, 王晓东, 潘超. 基于像素级辐射自校准的红外图像非均匀性校正改进方法[J]. 红外技术, 2021, 43(3): 246-250.
引用本文: 王杰, 洪闻青, 葛朋, 王晓东, 潘超. 基于像素级辐射自校准的红外图像非均匀性校正改进方法[J]. 红外技术, 2021, 43(3): 246-250.
WANG Jie, HONG Wenqing, GE Peng, WANG Xiaodong, PAN Chao. Improved Non-uniformity Correction Method by Pixel-wise Radiometric Self-calibration for Infrared Imaging[J]. INFRARED TECHNOLOGY, 2021, 43(3): 246-250.
Citation: WANG Jie, HONG Wenqing, GE Peng, WANG Xiaodong, PAN Chao. Improved Non-uniformity Correction Method by Pixel-wise Radiometric Self-calibration for Infrared Imaging[J]. INFRARED TECHNOLOGY, 2021, 43(3): 246-250.

基于像素级辐射自校准的红外图像非均匀性校正改进方法

详细信息
    作者简介:

    王杰(1992-),男,硕士研究生,工程师,主要从事红外图像处理方面的研究。E-mail:jaegerwang@outlook.com

    通讯作者:

    洪闻青(1986-),男,博士,高级工程师,主要从事红外成像系统方面的研究。E-mail:hongwenqing@aliyun.com

  • 中图分类号: TN219

Improved Non-uniformity Correction Method by Pixel-wise Radiometric Self-calibration for Infrared Imaging

  • 摘要: 红外成像系统中一直存在着非均匀性的问题,针对红外大动态范围成像等任务对改变成像系统积分时间的需要,提出了一种利用像素级辐射自校正技术的可变积分时间的非均匀性校正方法。通过辐射自校正为红外探测器中的每个像元建立辐射响应方程以估计出场景的辐射通量图,利用线性校正模型对辐射通量图进行校正,实现任意积分时间下的非均匀性校正。该方法的有效性通过高分辨率碲镉汞红外探测器进行了验证。
  • 图  1  恒定辐照度时某像素输出信号与积分时间的关系

    Figure  1.  The relationship between the output signal of a pixel and the integration time under constant irradiance

    图  2  三种方法校正后的场景图像

    Figure  2.  Corrected scene images of three methods

    表  1  3种方法处理前后的黑体图像的NU的统计数据

    Table  1.   NU statistics of the black body image before and after process of the three methods

    Method Mean NU Median NU Min NU Max NU
    Un-corrected 6.041% 6.489% 3.025% 8.583%
    Two-point 1.562% 1.081% 0.088% 6.024%
    Ochs 0.133% 0.128% 0.073% 0.281%
    Proposed 0.101% 0.098% 0.050% 0.205%
    下载: 导出CSV

    表  2  三种方法处理前后的场景图像的粗糙度ρ

    Table  2.   Roughness ρ of the scene images before and after theprocess of the three method

    Integration Time/ms Un-corrected Two-point Ochs Proposed
    4 0.11816 0.01032 0.00924 0.00904
    9 0.07297 0.00998 0.00900 0.00890
    12 0.06285 0.00989 0.00888 0.00876
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-12-17
  • 修回日期:  2021-03-03
  • 刊出日期:  2021-04-02

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