Research output per year
Research output per year
Gerald Schaefer*, Lars Nolle
Research output: Chapter in Book/Published conference output › Conference publication
Colour quantised images consist of two parts: a colour palette which represents all possible colours in the image, and an index image which stores which colour is to be used at each pixel position. This index image still contains a large amount of redundant information which can be exploited by applying lossless image compression algorithms. The achieved compression ratio however depends on the ordering of the colour entries in the palette. Hence, in order to achieve better compression, the colour entries need to be reordered so as to allow maximal redundancy exploitation by the specific compression algorithm to be used. In this paper we present a simulated annealing approach to reordering the palette for subsequent JPEG2000 or JPEG-LS lossless compression of the index information. We show that our algorithm allows for improved compression compared to previous reordering techniques.
Original language | English |
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Title of host publication | Applications of soft computing: updating the state of art |
Editors | Erel Avineri, Mario Köppen, et al |
Place of Publication | Berlin (DE) |
Publisher | Springer |
Pages | 178-185 |
Number of pages | 8 |
Volume | 52 |
ISBN (Electronic) | 978-3-540-88079-0 |
ISBN (Print) | 978-3-540-88078-3 |
DOIs | |
Publication status | Published - 11 Feb 2009 |
Event | 12th Online World Conference on Soft Computing in Industrial Applications - Online Duration: 16 Oct 2007 → 26 Oct 2007 |
Name | Advances in Soft Computing |
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Publisher | Springer |
Volume | 52 |
ISSN (Print) | 1615-3871 |
ISSN (Electronic) | 1860-0794 |
Conference | 12th Online World Conference on Soft Computing in Industrial Applications |
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Abbreviated title | WSC12 |
Period | 16/10/07 → 26/10/07 |
Research output: Chapter in Book/Published conference output › Conference publication