The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 13, 2005
Filed:
May. 16, 2001
Jean-yves Babonneau, L'Hermitage, FR;
Olivier Le Meur, Rennes, FR;
Juan Moronta, Rennes, FR;
Dominique Touchais, La Bouexière, FR;
Jean-Yves Babonneau, L'Hermitage, FR;
Olivier Le Meur, Rennes, FR;
Juan Moronta, Rennes, FR;
Dominique Touchais, La Bouexière, FR;
Thomson Licensing, Boulogne-Billancourt, FR;
Abstract
The present invention relates to a device and a process for motion-compensated recursive filtering and a corresponding coding system. The device comprises in particular a blockwise motion estimation module [()], means [()] for determining a recursivity noise level (σ), a module () for calculating a prediction error (ε), a module [()] for calculating a recursivity coefficient (α) as a function of the recursivity noise level and of the prediction error, means [()] for calculating a motion-compensated image and means of filtering [()] producing a weighting, by the recursivity coefficient, of the current input image and of a filtered and motion-compensated image stored previously. The device also comprises means [()] for determining an immobility noise level (σ), and an assembly [()] for processing zones constituting partitions of the blocks employed for the motion estimation, zeroing the motion vectors (d) associated with the zones in which the FDs are below a threshold dependent on the immobility noise level.