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:
Feb. 15, 2005
Filed:
Jan. 04, 2000
Stefano Olivieri, Teramo, IT;
Stefano Olivieri, Teramo, IT;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention provides a method of and a device for coding () an image sequence g(i,j,k)). The device () has a noise filter () for noise filtering () the image sequence (g(i,j,k)), and for regarding the noise filtering () as a rate-distortion optimization problem in order to adapt the response of the noise filter (). In particular, a filter parameter set (C) is determined to adapt the response of the filter () in that the image sequence (g(i,j,k)) is encoded using an optimal bit-budget, which is the bit-budget used for compressing a noise-free image sequence, and the distortion for the given bit-budget is minimized. A solution of the rate-distortion problem is proposed that calculates () the filter parameter set (C) by a Lagrange multiplier method. Separate minimization is used to determine each parameter of the parameter set (C) independently. In a practical embodiment, a spatial adaptive weighted averaging (SAWA) filtering () is used to estimate the bit budget (R) and to pre-filter the image sequence g(i,j,k)).