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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Morvan, Y. Farin, D. de With, P.H.N. |
| Copyright Year | 2007 |
| Description | Author affiliation: Univ. of Technol., Eindhoven (Morvan, Y.; Farin, D.) |
| Abstract | This paper presents a novel depth-image coding algorithm that concentrates on the special characteristics of depth images: smooth regions delineated by sharp edges. The algorithm models these smooth regions using piecewise-linear functions and sharp edges by a straight line. To define the area of support for each modeling function, we employ a quadtree decomposition that divides the image into blocks of variable size, each block being approximated by one modeling function containing one or two surfaces. The subdivision of the quadtree and the selection of the type of modeling function is optimized such that a global rate-distortion trade-off is realized. Additionally, we present a predictive coding scheme that improves the coding performance of the quadtree decomposition by exploiting the correlation between each block of the quadtree. Experimental results show that the described technique improves the resulting quality of compressed depth images by 1.5-4 dB when compared to a JPEG-2000 encoder. |
| File Size | 223939 |
| File Format | |
| ISBN | 9781424414369 |
| ISSN | 15224880 |
| DOI | 10.1109/ICIP.2007.4379776 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-09-16 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Image coding Rendering (computer graphics) Video compression Predictive coding Transform coding Cameras Layout Video coding Pixel Piecewise linear techniques geometric modeling Stereo vision image coding |
| Content Type | Text |
| Resource Type | Article |
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