| 消除FY-4辐射计图像旋转的方法研究 |
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| 引用本文： | 张强,王淦泉,陈桂林.消除FY-4辐射计图像旋转的方法研究[J].红外技术,2007,29(6):365-368. |
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| 作者姓名： | 张强 王淦泉 陈桂林 |
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| 作者单位： | 中国科学院上海技术物理研究所,上海,200083 |
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| 摘 要： | 根据FY-4辐射计的扫描方式,分析了产生图像旋转的因素及其特点,推导出了像旋角度和图像偏移的计算公式.利用此两项公式计算出图像在东西方向、南北方向的最大偏移,且以此为据,提出了一种简单而有效的消旋方法.此方法相对传统的消旋法有众多优点,特别是在不需要增加额外设备这一点上,可以保证本消旋法不会对整个辐射计的可靠性造成影响.最后,通过图像处理的手段对本消旋法进行了验证,其消旋效果较为明显.
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| 关 键 词： | 二维扫描 图像旋转 消旋 辐射计 图像旋转 方法 研究 Rotation Image Radiometer Technique 效果 验证 手段 图像处理 影响 设备 增加额 旋法 消旋 大偏 方向 公式计算 |
| 文章编号： | 1001-8891（2007）06-0365-04 |
| 修稿时间： | 2007-03-23 |
Research on the Technique of Eliminating FY-4 Radiometer Image Rotation |
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| ZHANG Qiang,WANG Gan-quan,CHEN Gui-lin.Research on the Technique of Eliminating FY-4 Radiometer Image Rotation[J].Infrared Technology,2007,29(6):365-368. |
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| Authors: | ZHANG Qiang WANG Gan-quan CHEN Gui-lin |
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| Affiliation: | Shanghai Institute of Technical Physics, the Chinese Academy of Science, Shanghai 200083, China |
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| Abstract: | The causations and characteristics of image rotation are analyzed,and the formulae to calculate image rotation angle and image excursion are concluded according to the scan mode of FY-4 radiometer.The largest excursions of image in east-west and south-north directions are attained as well as a simple and effective rotation eliminating method is proposed.This method has many advantages compared with conventional methods,especially no need of additional device which will not affect reliability of the whole radiometer.Finally,the new eliminating rotation method is applied to image manipulation and shows good results of rotation eliminating. |
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| Keywords: | two-dimension scan image rotation eliminate rotation |
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