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Theses, dissertations and research publications (including journal articles, conference abstracts and books) from Lund University are collected in this database. Where possible, the option to download a full text document is available. It is also possible to search for Lund University student theses in the student theses database.
| Title | Multiple description image coding using regions of interest |
| Author/s | Marcus Nyström, Jerry D. Gibson, John B Anderson |
| Department/s |
Department of Information Technology
Electrical and information technology |
| Full-text | Available as PDF |
| Publication/Series | Proceedings, 41st Asilomar Conference on Signals, Systems, and Computers, November 4-7, 2007 |
| Publishing year | 2007 |
| Pages | 4 |
| Pages | 925 - 929 |
| Document type | Conference |
| Conference name | the 41st Annual Asilomar Conference on Signals, Systems, and Computers, November 4-7, 2007 |
| Conference date | 2007-11-04/2007-11-07 |
| Conference location | Pacific Grove, CA |
| Status | published |
| Quality controlled | yes |
| Language | English |
| Abstract English |
A multiple description (MD) coding scheme encodes an image such that each description alone yields an acceptable reconstruction quality, and the descriptions together render increasingly better approximations of the image. Traditionally, each description contributes equally to the reconstruction quality throughout the image. This is inefficient from a coding perspective since all descriptions largely represent similar source information. We suggest a novel region of interest (ROI) based MD coding scheme with two descriptions and two ROIs, such that each ROI is coded into a separate description. The impact this scheme has on visual reconstruction quality and coding efficiency is investigated. We argue that ROI based MD coding is beneficial at low bit rates since it (i) introduces little redundancy between the descriptions with practically no loss in quality at the central decoder, and (ii) still produces useful side descriptions. Extensions to video coding are discussed in the concluding section. |
| Subject |
Technology and Engineering |
| Keywords | multiple description coding, image coding, image reconstruction |
| Research group | Informations- och kommunikationsteori |
| Funder |
VR |
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