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J4  2009, Vol. 43 Issue (11): 1988-1993    DOI: 10.3785/j.issn.1008-973X.2009.11.008
自动化技术、计算机技术     
光学遥感影像快速镶嵌方法
张登荣1,俞乐1,张汉奎1,蔡志刚2
(1.浙江大学 空间信息技术研究所,浙江 杭州 310027; 2.浙江省第一测绘院,浙江 杭州 310012)
Fast mosaic method for optical remote sensing images
ZHANG Deng-rong1, YU Le1, ZHANG Han-kui1, CAI Zhi-gang2
(1. Institute of Spatial Information Techniques, Zhejiang University, Hangzhou 310027, China;
2. Zhejiang 1st Institute of Surveying and Mapping, Hangzhou 310012, China)
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摘要:

针对遥感影像镶嵌存在的几何精度差和时间效率低等问题,提出一种快速镶嵌方法,主要包括自动配准、基于地理编码的镶嵌和色调调整3个步骤.在自动配准阶段,采用基于点特征匹配的自动配准方法既减少了工作量又提高了几何精度;在镶嵌过程中,根据地理坐标确定重叠区域,然后依据重叠频率确定多幅影像间的重叠关系和镶嵌顺序;在色调调整步骤中,基于Wallis变换进行整体色调调整,依据重叠区域大小分别采用基于最优接缝线的加权平滑处理和强制改正方法实现接缝线色调调整.对SPOT全色影像的镶嵌实验结果表明,这一技术流程能够实现多幅影像的快速镶嵌,镶嵌精度优于1像素,镶嵌后影像具有良好的整体效果.

Abstract:

A new fast image mosaic approach was proposed to resolve the problems of low-precision and time-consuming in the traditional manual geometry mosaic for multi optical remote sensing images. This workflow is composed of automatic registration, geocoding based mosaicing and automatic color adjustment. In the automatic registration stage, a point feature based registration method is used to reduce the work load and promote the geometry precision. In the mosaic process, overlap region is identified according to the geographic coordinate, and then the overlapping relations between different images and the mosaic order are identified according to the overlap frequency. In the color adjustment step, a whole-image color adjustment based on Wallis transformation is employed, then a weighted smoothing method based on optimal seam line and a compulsion correction method are separately adopted according to the size of overlap area. The results of mosaic experiments on SPOT panchromatic images show that the proposed approach can realize the mosaic of multi images quickly and precisely (the mosaic precision is better than 1 pixel).

出版日期: 2009-11-01
:  TP 751  
基金资助:

国家“863”高技术研究发展计划资助项目(2005AA131021).

作者简介: 张登荣(1966-),男,重庆江津人,副教授,从事遥感数字图像快速处理研究.
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引用本文:

张登荣, 俞乐, 张汉奎, 等. 光学遥感影像快速镶嵌方法[J]. J4, 2009, 43(11): 1988-1993.

ZHANG De-Rong, SHU Le, ZHANG Han-Kui, et al. Fast mosaic method for optical remote sensing images. J4, 2009, 43(11): 1988-1993.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2009.11.008        http://www.zjujournals.com/eng/CN/Y2009/V43/I11/1988

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