Title :
Combined description of shape and motion in an object based coding scheme using curved triangles
Author :
Schroder, Karsten ; Mech, Roland
Author_Institution :
Lehrstuhl fur Nachrichtentech., Dortmund Univ., Germany
Abstract :
We present an approach to a unified representation of motion and shape of objects in a video scene. Starting from given object masks, we outline an algorithm for the construction of grids consisting of regular and/or curved triangles. Hence the object shape is given as a polygon or a number of consecutive arcs, while the object motion can be approximated through tracking of the grid points. The prediction images are finally rendered by warping a reference frame according to the deformed grid
Keywords :
image representation; motion estimation; prediction theory; rendering (computer graphics); video coding; algorithm; arcs; curved triangles; deformed grid; grid points tracking; grids; image rendering; motion description; object based coding; object masks; object motion representation; object shape representation; polygon; prediction images; reference frame warping; regular triangles; shape description; video coding; video scene; Bit rate; Decoding; Grid computing; Image coding; Image quality; Layout; MPEG 4 Standard; Rendering (computer graphics); Shape; Tracking;
Conference_Titel :
Image Processing, 1995. Proceedings., International Conference on
Conference_Location :
Washington, DC
Print_ISBN :
0-8186-7310-9
DOI :
10.1109/ICIP.1995.537497
