Documents disponibles écrits par cet auteur

An integrated approach to summarization and adaptation using H.264/MPEG-4 SVC / Luis Herranz in Signal processing. Image communication, Vol. 24 N° 6 (Juillet 2009) 

Public ISBD [article]  in Signal processing. Image communication > Vol. 24 N° 6 (Juillet 2009) . - pp. 499-509 Titre : An integrated approach to summarization and adaptation using H.264/MPEG-4 SVC Type de document : texte imprimé Auteurs : Luis Herranz, Auteur ; José M. Martínez, Auteur Article en page(s) : pp. 499-509 Note générale : Electronique Langues : Anglais (eng) Mots-clés : Video  summarization  Scalable  video  coding  MPEG-4  SVC  H.264/MPEG-4  AVC  Video  adaptation Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : The huge amount of multimedia content and the variety of terminals and networks make video summarization and video adaptation two key technologies to provide effective access and browsing. With scalable video coding, the adaptation of video to heterogeneous terminals and networks can be efficiently achieved using together a layered coding hierarchy and bitstream extraction. On the other hand, many video summarization techniques can be seen as a special case of structural adaptation. This paper describes how some of them can be modified and included in the adaptation framework of the scalable extension of H.264/AVC. The advantage of this approach is that summarization and adaptation are integrated into the same efficient framework. The utility of this approach is demonstrated with experimental results for the generation of storyboards and video skims, showing that the proposed framework can generate the adapted bitstream of the summary faster than a conventional transcoding approach. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...] [article] An integrated approach to summarization and adaptation using H.264/MPEG-4 SVC [texte imprimé] / Luis Herranz, Auteur ; José M. Martínez, Auteur . - pp. 499-509. Electronique Langues : Anglais (eng) in Signal processing. Image communication > Vol. 24 N° 6 (Juillet 2009) . - pp. 499-509 Mots-clés : Video  summarization  Scalable  video  coding  MPEG-4  SVC  H.264/MPEG-4  AVC  Video  adaptation Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : The huge amount of multimedia content and the variety of terminals and networks make video summarization and video adaptation two key technologies to provide effective access and browsing. With scalable video coding, the adaptation of video to heterogeneous terminals and networks can be efficiently achieved using together a layered coding hierarchy and bitstream extraction. On the other hand, many video summarization techniques can be seen as a special case of structural adaptation. This paper describes how some of them can be modified and included in the adaptation framework of the scalable extension of H.264/AVC. The advantage of this approach is that summarization and adaptation are integrated into the same efficient framework. The utility of this approach is demonstrated with experimental results for the generation of storyboards and video skims, showing that the proposed framework can generate the adapted bitstream of the summary faster than a conventional transcoding approach. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...]

Effects of edaphoclimatic conditions on thymus hyemalis L. essential oil yield and composition / José M. Martínez in The journal of essential oil research, Vol. 17 N° 6 (Novembre-Décembre 2005) 

Public ISBD [article]  in The journal of essential oil research > Vol. 17 N° 6 (Novembre-Décembre 2005) . - pp. 614-618 Titre : Effects of edaphoclimatic conditions on thymus hyemalis L. essential oil yield and composition Type de document : texte imprimé Auteurs : José M. Martínez, Auteur ; María J. Jordán, Auteur ; M. Quílez, Auteur Année de publication : 2006 Article en page(s) : pp. 614-618 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Thymus  hyemalis  Laminaceae  Winter  thyme  Essential  oil  composition  p-cymene  γ-terpinene  Thymol  Edapho-climatic  conditions Résumé : Thymus hyemalis Lange shrubs were grown in two different cultivation areas of the region of Murcia (southeast Spain) in order to determine how edaphoclimatic conditions affect the essential oil yield and chemical composition of this thyme species. Results showed that no statistically significant differences were detected among essential oil yields. However, chromatographic analysis of the oils by GC and GC/MS reported that, from a total of 101 volatile components identified, statistically significant differences among concentrations of several volatile components existed. At the qualitative level, oils from La Paca cultivation area (690 m above sea level) showed a volatile profile rich in low molecular weight components and phenolic compounds when compared to those obtained from Torre Blanca cultivation area (30 m above sea level). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9699011#.Ubhblth-Sje [article] Effects of edaphoclimatic conditions on thymus hyemalis L. essential oil yield and composition [texte imprimé] / José M. Martínez, Auteur ; María J. Jordán, Auteur ; M. Quílez, Auteur . - 2006 . - pp. 614-618. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 17 N° 6 (Novembre-Décembre 2005) . - pp. 614-618 Mots-clés : Thymus  hyemalis  Laminaceae  Winter  thyme  Essential  oil  composition  p-cymene  γ-terpinene  Thymol  Edapho-climatic  conditions Résumé : Thymus hyemalis Lange shrubs were grown in two different cultivation areas of the region of Murcia (southeast Spain) in order to determine how edaphoclimatic conditions affect the essential oil yield and chemical composition of this thyme species. Results showed that no statistically significant differences were detected among essential oil yields. However, chromatographic analysis of the oils by GC and GC/MS reported that, from a total of 101 volatile components identified, statistically significant differences among concentrations of several volatile components existed. At the qualitative level, oils from La Paca cultivation area (690 m above sea level) showed a volatile profile rich in low molecular weight components and phenolic compounds when compared to those obtained from Torre Blanca cultivation area (30 m above sea level). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9699011#.Ubhblth-Sje

On the use of hierarchical prediction structures for efficient summary generation of H.264/AVC bitstreams / Luis Herranz in Signal processing. Image communication, Vol. 24 N° 8 (Septembre 2009) 

Public ISBD [article]  in Signal processing. Image communication > Vol. 24 N° 8 (Septembre 2009) . - pp. 615-629 Titre : On the use of hierarchical prediction structures for efficient summary generation of H.264/AVC bitstreams Type de document : texte imprimé Auteurs : Luis Herranz, Auteur ; José M. Martínez, Auteur Article en page(s) : pp. 615-629 Note générale : Electronique Langues : Anglais (eng) Mots-clés : Video  summarization  Temporal  scalability  H.264/AVC  Content-based  browsing Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : Video summarization refers to an important set of abstraction techniques aimed to provide a compact representation of the video essential to effectively browse and retrieve video content from multimedia repositories. Most of these video summarization techniques, such as image storyboards, video skims and fast previews, are based on selecting some frames or segments. H.264/AVC has become a widely accepted coding standard and is expected that many of the content will be available in this format soon. This paper proposes a generic model of video summarization especially suitable for generating summaries of H.264/AVC bitstreams in a highly efficient manner, using the concept of temporal scalability via hierarchical prediction structures. Along with the model, specific examples of summarization techniques are given to prove the utility of the model. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...] [article] On the use of hierarchical prediction structures for efficient summary generation of H.264/AVC bitstreams [texte imprimé] / Luis Herranz, Auteur ; José M. Martínez, Auteur . - pp. 615-629. Electronique Langues : Anglais (eng) in Signal processing. Image communication > Vol. 24 N° 8 (Septembre 2009) . - pp. 615-629 Mots-clés : Video  summarization  Temporal  scalability  H.264/AVC  Content-based  browsing Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : Video summarization refers to an important set of abstraction techniques aimed to provide a compact representation of the video essential to effectively browse and retrieve video content from multimedia repositories. Most of these video summarization techniques, such as image storyboards, video skims and fast previews, are based on selecting some frames or segments. H.264/AVC has become a widely accepted coding standard and is expected that many of the content will be available in this format soon. This paper proposes a generic model of video summarization especially suitable for generating summaries of H.264/AVC bitstreams in a highly efficient manner, using the concept of temporal scalability via hierarchical prediction structures. Along with the model, specific examples of summarization techniques are given to prove the utility of the model. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...]