International Journal of Image, Graphics and Signal Processing (IJIGSP)
IJIGSP Vol. 8, No. 5, 8 May 2016
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RISAT-1 Image Despeckling using a Modified Undecimated BM3D Technique
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Author(s)
Index Terms
BM3D, Image, SAR, Speckle, Wavelet
Abstract
In synthetic aperture radar (SAR) imaging, the transmitted microwave pulses from space born antenna interacts with ground objects and returned energy or back scattered energy will be collected to get backscattered image. In SAR image processing, a not anticipated noise (speckle noise) is added due to the coherent imaging system, which makes the image analysis troublesome. For better SAR image processing, the noise is to be removed or minimized in the begging stages of pre-processing and texture features are to be effectively maintained. The wavelet based Block Matching 3D (BM3D) method is normally considered as the state of art technique in the area of denoising of images. This method generally depends on up and down sampling conversion. In this paper, it is proposed a denoising technique which is independent on sampling conversion, so that texture features can be maintained, in which the speckle noise is reduced to the maximum extent.
Cite This Paper
Murali Mohan Babu. Y, K. Radhika,"RISAT-1 Image Despeckling using a Modified Undecimated BM3D Technique", International Journal of Image, Graphics and Signal Processing(IJIGSP), Vol.8, No.5, pp.52-60, 2016. DOI: 10.5815/ijigsp.2016.05.04
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