The multimedia content delivery chain poses today many challenges. The increasing terminal divers... more The multimedia content delivery chain poses today many challenges. The increasing terminal diversity, network heterogeneity and the pressure to satisfy the user preferences are raising the need for content to be customized in order to provide the user the best possible experience. This paper addresses the problem of multimedia customization by (1) presenting the MPEG-7 multimedia content description standard and the MPEG-21 multimedia framework; (2) classifying multimedia customization processing algorithms; (3) discussing multimedia customization systems; and (4) presenting some customization experiments.
Future mobile communications will bring a terminal diversity that until today has never happened.... more Future mobile communications will bring a terminal diversity that until today has never happened. This paper describes a universal access system able to deliver multimedia content that is tailored for each type of terminal. The system is composed by three applications: a content analyzer application, a content customization engine and a multi-characteristics terminal simulator. The system uses MPEG-7 as the content description standard and a user context description format developed for the purpose of this system while waiting for the availability of the MPEG-21 solution under development.
MPEG-7 is a new standard which addresses the multimedia content description problem at very diffe... more MPEG-7 is a new standard which addresses the multimedia content description problem at very different levels: description tools range from low-level features such as color and pitch to high-level features such as the name of the characters in a scene or the title of a movie. This paper presents an MPEG-7 enabled application based on a low-level descriptor: the visual color temperature. The implemented application relates the human perception of color with low-level information, automatically extractable, thus allowing to customize the visual content according to the user color temperature preferences.
The multimedia content delivery chain poses today many challenges. The increasing terminal divers... more The multimedia content delivery chain poses today many challenges. The increasing terminal diversity, network heterogeneity and the pressure to satisfy the user preferences are raising the need for content to be customized in order to provide the user the best possible experience. This paper addresses the problem of multimedia customization by (1) presenting the MPEG-7 multimedia content description standard and the MPEG-21 multimedia framework; (2) classifying multimedia customization processing algorithms; (3) discussing multimedia customization systems; and (4) presenting some customization experiments.
Future mobile communications will bring a terminal diversity that until today has never happened.... more Future mobile communications will bring a terminal diversity that until today has never happened. This paper describes a universal access system able to deliver multimedia content that is tailored for each type of terminal. The system is composed by three applications: a content analyzer application, a content customization engine and a multi-characteristics terminal simulator. The system uses MPEG-7 as the content description standard and a user context description format developed for the purpose of this system while waiting for the availability of the MPEG-21 solution under development.
MPEG-7 is a new standard which addresses the multimedia content description problem at very diffe... more MPEG-7 is a new standard which addresses the multimedia content description problem at very different levels: description tools range from low-level features such as color and pitch to high-level features such as the name of the characters in a scene or the title of a movie. This paper presents an MPEG-7 enabled application based on a low-level descriptor: the visual color temperature. The implemented application relates the human perception of color with low-level information, automatically extractable, thus allowing to customize the visual content according to the user color temperature preferences.
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Papers by Joao Magalhaes