International Journal of Image, Graphics and Signal Processing (IJIGSP)
IJIGSP Vol. 6, No. 1, 8 Nov. 2013
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Lossless Image Compression Using A Simplified MED Algorithm with Integer Wavelet Transform
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Author(s)
Index Terms
Lossless, image compression, median edge detector, integer wavelet transform, Joint Photographic Experts Group
Abstract
In this paper, we propose a lossless (LS) image compression technique combining a prediction step with the integer wavelet transform. The prediction step proposed in this technique is a simplified version of the median edge detector algorithm used with JPEG-LS. First, the image is transformed using the prediction step and a difference image is obtained. The difference image goes through an integer wavelet transform and the transform coefficients are used in the lossless codeword assignment. The algorithm is simple and test results show that it yields higher compression ratios than competing techniques. Computational cost is also kept close to competing techniques.
Cite This Paper
Mohamed M. Fouad, Richard M. Dansereau,"Lossless Image Compression Using A Simplified MED Algorithm with Integer Wavelet Transform", IJIGSP, vol.6, no.1, pp.18-23, 2014. DOI: 10.5815/ijigsp.2014.01.03
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