Title :
Egyptsat-1 super-resolution image reconstruction using data fusion
Author :
Nasr, Ayman H. ; Helmy, Ashraf K.
Author_Institution :
Data Reception, Anal. & Receiving Station Affairs Div., Nat. Authority for Remote Sensing & Space Sci., Cairo, Egypt
Abstract :
In this paper, we propose a super-resolution (SR) reconstruction algorithm for Egyptsat-1 images. We recombine the lower resolution of Egyptsat-1 bands in order to obtain a super-resolution product. The algorithm is based on image fusion scheme using the multi-resolution decomposition. The fusion process is done in steerable wavelet domain using normalized convolution technique. We show the implementation of the proposed algorithm and how it can make significant spatial resolution improvements from 7.8 m to 4 m without amplifying the noise and allowing recognition of objects with size approaching its limiting spatial resolution. The experimental results and the comparative analyses using the Modulation Transfer Function (MTF) and other measures verify the usefulness and effectiveness of this algorithm.
Keywords :
artificial satellites; geophysical image processing; image fusion; image reconstruction; image resolution; object recognition; transfer functions; wavelet transforms; Egyptsat-1 band; Egyptsat-1 superresolution image; data fusion; image fusion; modulation transfer function; multiresolution decomposition; normalized convolution; object recognition; spatial resolution; steerable wavelet domain; superresolution product; superresolution reconstruction algorithm; Convolution; Image reconstruction; Remote sensing; Spatial resolution; Strontium; Wavelet transforms;
Conference_Titel :
Urban Remote Sensing Event (JURSE), 2011 Joint
Conference_Location :
Munich
Print_ISBN :
978-1-4244-8658-8
DOI :
10.1109/JURSE.2011.5764783