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

9.3. 2D Mesh Coding

MPEG-4 is an object-based coding standard. In MPEG-4 Visual [MPEG4-2], the object-based video coding of natural video data is performed by means of a block-based texture and motion coding scheme together with a shape information coding scheme. A different approach to object-based video can be taken through 2D meshes or 2D planar graphs with triangles. Combined with natural video, a 2D mesh object can provide a unique way to support 2D mesh-based video coding.

The functionalities provided by the MPEG-4 2D mesh coding tool are these:

  • Efficient compression of 2D meshes

  • Texture mapping on top of 2D meshes

  • Text overlays

  • Image and graphics overlays (augmented reality)

2D mesh coding is designed mostly for video manipulation; thus, ...

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