资源三号测绘卫星多光谱影像高精度谱段配准  

Research on the High Accuracy Band-to-Band Registration Method of ZY-3 Multispectral image

作　　者：蒋永华[1] 张过[1,2] 唐新明[2] 祝小勇[2] 黄文超[1] 潘红播[1] 秦前清[1] 

机构地区：[1]武汉大学测绘遥感信息工程国家重点实验室,湖北武汉430079 [2]国家测绘地理信息局卫星测绘应用中心,北京100830

出　　处：《测绘学报》2013年第6期884-890,897,共8页Acta Geodaetica et Cartographica Sinica

基　　金：国家科技支撑项目(2011BAB01B01;2012BAH28B04);国家自然科学基金(40930532)

摘　　要：针对ZY-3多光谱影像各谱段共视场扫描成像特点,提出基于在轨检校内方位元素的虚拟CCD重成像算法,通过虚拟CCD重成像技术实现单谱段CCD影像的无缝拼接及多谱段的高精度谱段配准。采用河南登封区域及天津区域的ZY-3多光谱影像对ZY-3多光谱相机进行在轨几何检校,利用河北安平区域的30个高精度靶标控制点验证了检校结果的正确性;进一步利用检校后的内方位元素对河北安平区域、兰州区域的ZY-3多光谱影像进行虚拟CCD重成像,采用靶标点验证方法以及高精度配准验证方法对虚拟CCD重成像影像的谱段配准精度验证,谱段配准精度均优于0.2像元。Fully considering the characteristic of the ZY-3 multispectral camera that all CCD chips of four bands scan through the same field, a novel method is proposed to achieve seamless multispectral images and high accuracy band-to-band registration by re-imaging with virtual CCD. In the experiment, the ZY-3 multispectral camera is calibrated with the ZY-3 images over Henan area and Tianjin area, meanwhile the correctness of the calibration results is validated by 30 high accuracy ground control points （GCPs） in the ZY-3 muttispectral image over Hebei. Further, re-imaging method is applied to the ZY-3 images over Hebei area and Lanzhou area with the virtual CCD calculated from the calibrated interior orientation. Finally, the band-to-band registration is estimated by comparing image coordinates of the same points in different bands. The validity of the proposed method is proved by experimental result which indicates the band-to-band registration accuracy is better than O. 2 pixels.

关 键 词：资源三号测绘卫星 多光谱 内检校 虚拟CCD 重成像 谱段配准精度 

分 类 号：P237[天文地球—摄影测量与遥感]