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A new approach for colored satellite image enhancement

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2 Author(s)
Attachoo, B. ; Dept. of Comput. Eng., King Mongkut''s Inst. of Technol. Ladkrabang, Bangkok ; Pattanasethanon, P.

A unique method of image filtering has been developed that enhances the detail and sharpens the edges of colored satellite images. Histogram equalization coupled with a two stage data filtering process that applies convolution with Laplacian and sharpening with Laplacian through the 3 color bands that produce the colored satellite images has yielded sharper clearer images. The initial enhancement using histogram equalization was followed by the first stage of a filtering process convolution with Laplacian which highlighted the edges of the image. The application of the second stage filtering sharpening with Laplacian yielded enhanced color reproduction and a more accurate depiction of information at sea and land levels than was available in the original image. An analysis of the statistical index and signal to noise ratio of the true color and false color of histogram equalization, convolution with Laplacian and sharpening images showed the image. An analysis of the false color of histogram equalization, convolution with Laplacian and sharpening images showed the image to be superior, in this study the multi spectral content in the satellite image was transformed into a composite colour image, and then convoluted using the Laplacian technique. This study placed an emphasis on improving the detail and edge clarity of satellite images.

Published in:

Robotics and Biomimetics, 2008. ROBIO 2008. IEEE International Conference on

Date of Conference:

22-25 Feb. 2009