红外焦平面非均匀性噪声的空间频率特性及空间自适应非均匀性校正方法改进
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TN215

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国家自然科学基金重点资助项目(60135020)


STUDY ON THE PROPERTY OF SPATIAl, FREQUENCY OF NONUNIFORMITY NOISE IN IRFPA AND THE IMPROVEMENT OF SPATIAL ADAPTIVE NONUNIFORMITY CORRECTION TECHNIQUE
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    摘要:

    分析了红外焦平面阵列非均匀性噪声的空间频率特性,指出空间低频噪声为其中的主要成分.利用实际IRF—PA定标数据,也得出了相同结论.针对传统空域自适应校正方法去除低频空间噪声存在的不足,本文提出采用一点校正和空域自适应校正相结合的方法.实验结果表明,新方法在空间低频噪声占优时能获得好的校正效果.

    Abstract:

    The property of spatial frequency of the nonuniformity noise in IRFPA was studied. And the conclusion is that low frequency noise generally dominates the inherent IRFPA nonuniformity noise. The experiment with real IRFPA data demonstrates the same conclusion. To avoid the disadvantage of the traditional spatial adaptive nonuniformity correction denoising the low frequency dominated nonuniformity noise, a feasible approach for nonuniformity correction of IRFPA, which integrates one-point correction with spatial adaptive correction scheme, was proposed in this study. Experiments show that the proposed scheme can achieve good performance when low frequency noise is dominant.

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张天序 石岩 曹治国.红外焦平面非均匀性噪声的空间频率特性及空间自适应非均匀性校正方法改进[J].红外与毫米波学报,2005,24(4):255~260]. Zhang TianXu;Dan Yan;Cao ZhiGuo. STUDY ON THE PROPERTY OF SPATIAl, FREQUENCY OF NONUNIFORMITY NOISE IN IRFPA AND THE IMPROVEMENT OF SPATIAL ADAPTIVE NONUNIFORMITY CORRECTION TECHNIQUE[J]. J. Infrared Millim. Waves,2005,24(4):255~260.]

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  • 收稿日期:2004-08-19
  • 最后修改日期:2004-08-19
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