| 基于高阶统计量的红外焦平面非均匀校正算法 |
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| 引用本文： | 徐田华,赵继政,赵亦工.基于高阶统计量的红外焦平面非均匀校正算法[J].西安电子科技大学学报,2006,33(2):227-230. |
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| 作者姓名： | 徐田华 赵继政 赵亦工 |
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| 作者单位： | 西安电子科技大学 模式识别与智能控制研究所，陕西 西安 710071 |
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| 摘 要： | 根据高斯噪声高于二阶累积量为零的特性，提出基于高阶统计量的红外焦平面非均匀校正算法，可从图像场景中自适应估计阵列单元的增益和偏置参数．提出的算法包含两个部分，第一部分利用统计矩和累积量周期估计红外焦平面的模型参数，第二部分利用维纳滤波恢复真实图像．仿真图像序列表明这种算法有效降低了固定图案噪声，达到了较高的非均匀校正水平．
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| 关 键 词： | 高阶统计量 红外焦平面阵列 非均匀校正 固定图案噪声 |
| 文章编号： | 1001-2400（2006）02-0227-04 |
| 收稿时间： | 2005-04-23 |
| 修稿时间： | 2005-04-23 |
High-order-statistics based nonuniformity correction for infrared focal plane arrays |
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| XU Tian-hua,ZHAO Ji-zheng,ZHAO Yi-gong.High-order-statistics based nonuniformity correction for infrared focal plane arrays[J].Journal of Xidian University,2006,33(2):227-230. |
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| Authors: | XU Tian-hua ZHAO Ji-zheng ZHAO Yi-gong |
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| Affiliation: | Research Inst. of Pattern Recognition and Intelligent Control, Xidian Univ., Xi’an 710071， China |
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| Abstract: | According to the property that for Gaussian signals only,all cumulant spectra of order greater than two are identically zero,a High-Order-Statistics based Nonuniformity Correction(HOS-NUC) approach is taken for the adaptive estimation of the gain and bias nonuniformity in infrared focal-plane array sensors from scene data.The proposed algorithm consists of two main parts: the first part involves a periodic statistical estimation of the model parameters using the moment and cumulant;the second part involves the estimated parameters in restoring the true image by a winner filter.The proposed method has been tested with video sequences of simulated infrared data,reducing the fixed pattern noise and reaching high correction levels. |
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| Keywords: | High-Order-Statistics infrared focal plane array non-uniformity correction fixed-pattern noise |
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