On a high performance image compression technique
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 th...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Science Society, Thailand
2013
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| Online Access: | http://psasir.upm.edu.my/id/eprint/30290/ http://psasir.upm.edu.my/id/eprint/30290/1/On%20a%20high%20performance%20image%20compression%20technique.pdf |
| Summary: | 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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