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1. (WO2003055225) VIDEO CODING AND DECODING METHOD

Pub. No.:    WO/2003/055225    International Application No.:    PCT/IB2002/005479
Publication Date: Jul 3, 2003 International Filing Date: Dec 11, 2002
IPC: H04N 19/70
G06T 9/00
H04N 19/25
Applicants: KONINKLIJKE PHILIPS ELECTRONICS N.V.
DUFOUR, Cecile
MARQUANT, Gwenaelle
VALENTE, Stephane, E.
Inventors: DUFOUR, Cecile
MARQUANT, Gwenaelle
VALENTE, Stephane, E.
Title: VIDEO CODING AND DECODING METHOD
Abstract:
The invention relates to a video coding method and device applie d to a sequence of frames and generating a coded bitstream in which each data item is described by means of a bitstream syntax allowing any decoder to recognize and decode all the elements of the content of said bitstream. According to the invention, which finds an application for instance within the video compression standard MPEG-4, the syntax comprises a specific one bit flag provided for indicating at a high level description the presence, or not, of a shape for each video object of the scenes of the sequence. This flag is transmitted in the coded bitstream, and its value is read at the decoding side for controlling correspondingly the decoding step.