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Coding of details in very low bit-rate video systems
dc.contributor.author | Casas Pla, Josep Ramon |
dc.contributor.author | Torres Urgell, Lluís |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
dc.date.accessioned | 2016-12-01T17:04:20Z |
dc.date.available | 2016-12-01T17:04:20Z |
dc.date.issued | 1994-06 |
dc.identifier.citation | Casas, J., Torres, L. Coding of details in very low bit-rate video systems. "IEEE transactions on circuits and systems for video technology", Juny 1994, vol. 4, núm. 3, p. 317-327. |
dc.identifier.issn | 1051-8215 |
dc.identifier.uri | http://hdl.handle.net/2117/97643 |
dc.description.abstract | In this paper, the importance of including small image features at the initial levels of a progressive second generation video coding scheme is presented. It is shown that a number of meaningful small features called details should be coded, even at very low data bit-rates, in order to match their perceptual significance to the human visual system. We propose a method for extracting, perceptually selecting and coding of visual details in a video sequence using morphological techniques. Its application in the framework of a multiresolution segmentation-based coding algorithm yields better results than pure segmentation techniques at higher compression ratios, if the selection step fits some main subjective requirements. Details are extracted and coded separately from the region structure and included in the reconstructed images in a later stage. The bet of considering the local background of a given detail for its perceptual selection breaks the concept of |
dc.format.extent | 11 p. |
dc.language.iso | eng |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació |
dc.subject.lcsh | Telecommunication |
dc.subject.other | Image segmentation |
dc.subject.other | Video signals |
dc.subject.other | Image coding |
dc.subject.other | Image sequences |
dc.subject.other | Mathematical morphology |
dc.title | Coding of details in very low bit-rate video systems |
dc.type | Article |
dc.subject.lemac | Telecomunicació |
dc.contributor.group | Universitat Politècnica de Catalunya. GPI - Grup de Processament d'Imatge i Vídeo |
dc.contributor.group | Universitat Politècnica de Catalunya. DMAG - Grup d'Aplicacions Multimèdia Distribuïdes |
dc.identifier.doi | 10.1109/76.305876 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://ieeexplore.ieee.org.recursos.biblioteca.upc.edu/document/305876/ |
dc.rights.access | Open Access |
local.identifier.drac | 780598 |
dc.description.version | Postprint (published version) |
local.citation.author | Casas, J.; Torres, L. |
local.citation.publicationName | IEEE transactions on circuits and systems for video technology |
local.citation.volume | 4 |
local.citation.number | 3 |
local.citation.startingPage | 317 |
local.citation.endingPage | 327 |
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