Open Access

Sliding Adjustment for 3D Video Representation

EURASIP Journal on Advances in Signal Processing20022002:625087

https://doi.org/10.1155/S1110865702206095

Received: 31 August 2001

Published: 22 October 2002

Abstract

This paper deals with video coding of static scenes viewed by a moving camera. We propose an automatic way to encode such video sequences using several 3D models. Contrary to prior art in model-based coding where 3D models have to be known, the 3D models are automatically computed from the original video sequence. We show that several independent 3D models provide the same functionalities as one single 3D model, and avoid some drawbacks of the previous approaches. To achieve this goal we propose a novel algorithm of sliding adjustment, which ensures consistency of successive 3D models. The paper presents a method to automatically extract the set of 3D models and associate camera positions. The obtained representation can be used for reconstructing the original sequence, or virtual ones. It also enables 3D functionalities such as synthetic object insertion, lightning modification, or stereoscopic visualization. Results on real video sequences are presented.

Keywords

sliding adjustment 3D model reconstruction video coding model-based coding video manipulation

Authors’ Affiliations

(1)
IRISA/INRIA Rennes

Copyright

© Galpin and Morin 2002