O'Reilly logo

MPEG-4 Book, The by Touradj Ebrahimi, Fernando Pereira

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

9.5. View-Dependent Scalability

Scalability is one of the major functionalities in MPEG-4, as it can provide solutions to harmonize platforms with different capabilities, for example, in terms of bandwidth or computational power. In a 3D game scene, the user terminal might be burdened if it has to download the scene graph and all of its entities, especially when the user terminal is a mobile device. However, the virtual world, which the user can experience with MPEG-4, is bounded by the viewing position and field of view, just as human beings are bounded by eye positions and capabilities in the real world. View-dependent scalability is a tool for sending first to the decoding terminal only the visually needed data. If the user's viewing position ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required