A NOVEL APPROACH FOR EDGE DETECTION OF LOW CONTRAST SATELLITE IMAGES

被引:11
|
作者
Singh, K. K. [1 ]
Bajpai, M. K. [1 ]
Pandey, R. K. [2 ]
机构
[1] Indian Inst Informat Technol Design & Mfg Jabalpu, Comp Sci & Engn, Jabalpur 482005, MP, India
[2] Banaras Hindu Univ, Indian Inst Technol, Dept Math Sci, Varanasi 221005, UP, India
来源
关键词
Sobel Edge Detector; Fractional Order Differentiator; Chebyshev Polynomial based Approximation; Satellite Images;
D O I
10.5194/isprsarchives-XL-3-W2-211-2015
中图分类号
P9 [自然地理学];
学科分类号
0705 ; 070501 ;
摘要
Discrimination between texture edges and geometrical edges is very difficult in low contrast images. Satellite images are low contrast images. It is important to extract the edges that are not clearly visible in case of Satellite images. The present work encompasses a new edge detection algorithm using newly constructed differentiator. Chebyshev polynomial based fractional order differentiator has been used for filtering operation on an image. High pass and Low pass filters are designed with the concept of Quadrature Mirror Filter (QMF). Pre-processing has been performed by using this filter. Sobel edge detection method has been applied on this pre-processed image. The algorithm has been tested with two different satellite images.
引用
收藏
页码:211 / 217
页数:7
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