| 一种非共线TDI CCD成像数据内视场拼接方法 |
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| 引用本文： | 潘俊,胡芬,王密,金淑英,李国元.一种非共线TDI CCD成像数据内视场拼接方法[J].测绘学报,2014,43(11):1165-1173. |
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| 作者姓名： | 潘俊 胡芬 王密 金淑英 李国元 |
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| 作者单位： | 1. 武汉大学 测绘遥感信息工程国家重点实验室;
2. 国家测绘地理信息局 卫星测绘应用中心;
3. 国家测绘地理信息局卫星测绘应用中心;
4. 武汉大学测绘遥感信息工程国家重点实验室 |
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| 基金项目： | 国家973计划(2014CB744201；2012CB719901)；国家自然科学基金(41371430；40901210)；全国博士学位论文作者专项资金(201249)；长江学者和创新团队发展计划(IRT1278)；测绘地理信息公益性行业科研专项 |
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| 摘 要： | 星载非共线TDI CCD成像数据的高质量内视场拼接是保证影像后续处理和应用的基础。本文提出了一种非共线TDI CCD成像数据内视场拼接方法，该方法基于物方投影面和相机的传感器几何模型，建立了从拼接影像像点到原始影像像点的坐标转换关系，进而采用间接法影像纠正的方式对原始影像进行重采样生成拼接影像。本文在描述非共线TDI CCD严格成像几何模型之后，详细叙述了方法的基本原理、潜在的误差来源以及方法的实现流程，并通过ZY-1 02C卫星的高分辨率（HR）相机成像数据进行了试验验证，对拼接精度的分析与评价证明了方法的可行性。
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| 关 键 词： | 非共线TDI CCD 内视场拼接 传感器几何模型 物方投影面 精度评价 |
| 收稿时间： | 2013-12-06 |
| 修稿时间： | 2014-03-19 |
An Inner FOV Stitching Method for Non-collinear TDI CCD Images |
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| PAN Jun,HU Fen,WANG Mi,JIN Shuying,LI Guoyuan.An Inner FOV Stitching Method for Non-collinear TDI CCD Images[J].Acta Geodaetica et Cartographica Sinica,2014,43(11):1165-1173. |
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| Authors: | PAN Jun HU Fen WANG Mi JIN Shuying LI Guoyuan |
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| Institution: | 1. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University;
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3. Satellite Surveying and Mapping Application Center, National Administration of Surveying, Mapping and Geoinformation |
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| Abstract: | High-quality inner FoV (field of view) stitching is a necessary step for post-process and application of images captured by spaceborne non-collinear TDI CCD camera. This paper presents an inner FoV stitching method for non-collinear TDI CCD images. The method utilizes the projection plane in object space and the sensor geometric model of the camera to establish the coordinates transformation relation between pixels of the stitched image and pixels of the orginal image, and then performs image resampling to generate the stitched image by indirect image geometric rectification. After describing the strict geometric models of non-collinear TDI CCD images, the basic principle, the potential error sources and the workflow of the method are discussed in detail. Finally, experimental verification is carried out on the high-resolution (HR) camera images of ZY-1 02C satellite, and the accuracy evaluation of the generated stitched images indicates the feasiblity of the presented method. |
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| Keywords: | non-collinear TDI CCD inner FOV stitching sensor geometric model projection plane in object-space evaluation of accuracy |
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