| 红外图像非均匀性校正高通滤波算法的改进 |
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| 引用本文： | 刘缠牢, 谭立勋, 刘卫国, 李春燕. 红外图像非均匀性校正高通滤波算法的改进[J]. 红外技术, 2006, 28(8): 439-442. DOI: 10.3969/j.issn.1001-8891.2006.08.002 |
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| 作者姓名： | 刘缠牢 谭立勋 刘卫国 李春燕 |
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| 作者单位： | 西安工业学院,光电工程学院,陕西,西安,710032;西安工业学院,光电工程学院,陕西,西安,710032;西安工业学院,光电工程学院,陕西,西安,710032;西安工业学院,光电工程学院,陕西,西安,710032 |
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| 基金项目： | 陕西省西安市科技局科技计划 |
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| 摘 要： | 红外焦平面阵列的非均匀性噪声是制约红外成像质量的主要因素.本文通过分析多种均匀性校正的方法,提出了一种时域高通滤波法的改进,在这种方法中增加了一个调节因子a,目的是为了调节系统的截止频率,选择合适的调节因子能够尽可能校正焦平面阵列的非均匀性.另外考虑到噪声的空域特性,建立了差图像Eij(n),用于替换噪声图xij(n).实验仿真通过图像的空间标准差证明,新算法具有较好的校正效果.
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| 关 键 词： | 非均匀性校正 时域高通滤波 调节因子 差图像 |
| 文章编号： | 1001-8891（2006）08-0439-04 |
| 收稿时间： | 2006-01-19 |
| 修稿时间： | 2006-01-19 |
An Improve High Pass Filtering Algorithm for Nonuniformity Correction of Infrared Image |
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| LIU Chan-lao, TAN Li-xun, LIU Wei-guo, LI Chun-yan. An Improve High Pass Filtering Algorithm for Nonuniformity Correction of Infrared Image[J]. Infrared Technology , 2006, 28(8): 439-442. DOI: 10.3969/j.issn.1001-8891.2006.08.002 |
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| Authors: | LIU Chan-lao TAN Li-xun LIU Wei-guo LI Chun-yan |
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| Abstract: | The nonuniformity noise in the infrared focal plane array is a major factor which limits the quality of infrared image.By analyzing some correction methods,an improved high pass filtering algorithm was presented.An adjusting gene(a) is added in this method to adjust the system cut-off frequency,which can help get a better nonuniformity correction in the infrared focal plane array.Considering spatial characteristic of the noise,the noise image xi,j(n) is replaced by the residual image Ei,j(n).The new algorithm comes to a better result of correcting proved by space standard deviation of picture in the experiment. |
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| Keywords: | nonuniformity correction temporal high pass filtering adjusting gene residual image |
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