Signal processing. Image communication : theory, techniques & applications, Vol. 25 N° 3 (02 ex.). Signal processing. Image communication - Mars 2010
| Titre : | Signal processing. Image communication : theory, techniques & applications, Vol. 25 N° 3 (02 ex.). Signal processing. Image communication - Mars 2010 |
| Type de document : | Bulletin |
| Paru le : | 21/07/2010 |
Dépouillements
Article : texte imprimé
Hoi-Kok Cheung, Auteur ;
Wan-Chi Siu, Auteur ;
Dagan Feng, Auteur
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Conventional hybrid video coding systems rely on the assumption that the brightness is constant. This does not take inter-frame brightness variations into consideration during motion estimation and compensation processes. Under the influence of [...]
Article : texte imprimé
Pierre Ferré, Auteur ;
Dimitris Agrafiotis, Auteur ;
David Bull, Auteur
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In this paper, a redundant picture formation algorithm that takes into account a given redundancy rate constraint is presented for error resilient wireless video transmission without reliance on retransmissions. The algorithm assigns priorities [...]
Article : texte imprimé
Athar Ali Moinuddin, Auteur ;
Ekram Khan, Auteur ;
Mohammad Ghanbari, Auteur
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In this paper we analyze the impact of tree structures on the performance of zerotree-based wavelet video codecs. Since zerotree approach is based on aggregation of insignificant coefficients in trees, therefore design of a tree structure is the[...]
Article : texte imprimé
Nithin Thomas, Auteur ;
David Redmill, Auteur ;
David Bull, Auteur
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This paper considers the use of selective encryption systems for compressed video data that can support transcoding of the encrypted bit-streams without the need for decryption and re-encryption. The focus is on the use of the H.264 video codec.[...]
Article : texte imprimé
Kiwon Yoo, Auteur ;
Kwanghoon Sohn, Auteur
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In H.264/AVC, motion data can be basically derived by the following two schemes: one is a typical spatial prediction scheme based on the DPCM and the other is a sophisticated spatiotemporal prediction scheme for the skipped motion data, formally[...]
Article : texte imprimé
Chunhui Cui, Auteur ;
King Ngi Ngan, Auteur
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In this paper, we present an efficient external calibration technique for a typical multi-camera system. The technique is very handy in practice using a simple planar pattern. Based on homography, three different pair-wise estimation algorithms [...]
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