Joint optimal object shape estimation and encoding
| dc.contributor.author | Kondi, L. P. | en |
| dc.contributor.author | Melnikov, G. | en |
| dc.contributor.author | Katsaggelos, A. K. | en |
| dc.date.accessioned | 2015-11-24T17:00:43Z | |
| dc.date.available | 2015-11-24T17:00:43Z | |
| dc.identifier.issn | 1051-8215 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/10806 | |
| dc.rights | Default Licence | - |
| dc.subject | boundary coding | en |
| dc.subject | mpeg-4 | en |
| dc.subject | operational rate-distortion (ord) theory | en |
| dc.subject | shape coding | en |
| dc.subject | shape-adaptive dct | en |
| dc.title | Joint optimal object shape estimation and encoding | en |
| heal.abstract | A major problem in. object-oriented video coding and, MPEG-4 is the encoding of object boundaries., Traditionally this problem, is treated separately from the texture encoding problem. In. this paper, we present,a vertex-based shape coding method which is optimal in the operational rate-distortion sense and takes into account the texture information of the video frames. This is accomplished by utilizing a variable-width tolerance band whose Width,is a function of the texture, profile. As an. example, this width is inversely proportional to the magnitude, of the image gradient. Thus, in areas where the confidence in the estimation of the boundary is low and/or coding errors in the boundary will not affect the application (e.g., object-oriented coding and MPEG-4) significantly,. a larger boundary approximation error, is allowed. We present experimental. results which demonstrate the effectiveness of the proposed algorithm. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.primary | Doi 10.1109/Tcsvt.2004.825569 | - |
| heal.journalName | Ieee Transactions on Circuits and Systems for Video Technology | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2004 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Ηλεκτρονικών Υπολογιστών και Πληροφορικής | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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