On a high performance image compression technique
Abd Elhafiez, Walaa M. and Mohammed, Usama S. and Kilicman, Adem (2013) On a high performance image compression technique. Science Asia, 39 (4). pp. 416-422. ISSN 1513-1874
Official URL: http://dx.doi.org/10.2306/scienceasia1513-1874.201...
We introduce an optimal approach to colour image compression using a new scan method. We propose efficient methods to increase the compression ratio for colour images by dividing the colour image into non-overlapping blocks and applying a different compression ratio for these blocks depending on the classification of blocks into edge and non-edge blocks. In an edge block (a region that contains important information) the compression ratio is reduced to prevent loss of information, while in a non-edge block (a smooth region which does not have important information), a high compression ratio is used. The new proposed scan is used instead of the zigzag scan. A particular implementation of this approach was tested, and its performance was quantified using the peak signal-to-noise ratio. Numerical results indicated general improvements in visual quality for colour image coding.
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