Abstract
A lossless compression scheme for coding color-indexed images is proposed in this paper. This two-stage scheme first turns the index map of a color-indexed image into a new index map each element of which serves as an index to a pixel-dependently reordered version of the palette. Consequently, it reduces the zero-order entropy and the energy of the index map and removes the spatial correlation among pixels significantly. A matching coding scheme is then exploited to encode the new index map effectively. Simulation results show that the proposed compression scheme is superior to other state-of-art lossless compression schemes for coding color-indexed images in terms of compression performance.
| Original language | English |
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| Title of host publication | APSIPA ASC 2010 - Asia-Pacific Signal and Information Processing Association Annual Summit and Conference |
| Pages | 318-321 |
| Number of pages | 4 |
| Publication status | Published - 1 Dec 2010 |
| Event | 2nd Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2010 - Biopolis, Singapore Duration: 14 Dec 2010 → 17 Dec 2010 |
Conference
| Conference | 2nd Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2010 |
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| Country/Territory | Singapore |
| City | Biopolis |
| Period | 14/12/10 → 17/12/10 |
ASJC Scopus subject areas
- Computer Networks and Communications
- Information Systems