Pre-processing Algorithm for Rectification of Geometric Distortions in Satellite Images

Defence Science Journal

B. K. Mohan¹  Narayan Panigrahi²  G. Athithan² 

[1]Indian Institute of Technology Bombay, Mumbai

[2]Centre for Artificial Intelligence and Robotics, Bengaluru

关键词: Input-to-output image transformation;    Polynomial affine transformation;    Ortho-rectification;    Pre-processing algorithm;    Image rectification;    Satellite images;    Image registration;   

DOI  :  

学科分类：社会科学、人文和艺术（综合）

来源: Defence Scientific Information & Documentation Centre

【 摘 要 】

A number of algorithms have been reported to process and remove geometric distortions in satellite images. Ortho-correction, geometric error correction,radiometric error removal, etc are a few important examples. These algorithm require supplementary meta-information of the satellite images such as ground control points and correspondence, sensor orientation details, elevation profile of the terrain, etc to establish corresponding transformations. In this paper, a pre-processing algorithm has been proposed which removes systematic distortions of a satellite image and thereby removes the blank portion of the image. It is an input-to-output mapping of image pixels, where the transformation computes the coordinate of each output pixel corresponding to the input pixel of an image. The transformation is established by the exact amount of scaling, rotation and translation needed for each pixel in the input image so that the distortion induced during the recording stage is corrected. Defence Science Journal, 2011, 61(2), pp.174-179 , DOI:http://dx.doi.org/10.14429/dsj.61.421

【 授权许可】

Unknown