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:
Apr. 25, 2006
Filed:
Jan. 23, 2002
Olukayode Anthony Ojo, Eindhoven, NL;
Tatiana Georgieva Kwaaitaal-spassova, Eindhoven, NL;
Rudolf Eland, Eindhoven, NL;
Olukayode Anthony Ojo, Eindhoven, NL;
Tatiana Georgieva Kwaaitaal-Spassova, Eindhoven, NL;
Rudolf Eland, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
Noise reduction is an important feature in consumer television. This is realized by spatial, temporal or spatio-temporal filters. Spatial filters require pixels from within one image, while temporal filters require samples from two or more successive images. The spatio-temporal filter unit () integrates spatial and implicit motion-compensated temporal noise reduction in one filter. For the motion compensation, no motion vectors are required. The spatio-temporal filter unit () is provided with a sigma filter () having one filter kernel () designed to operate on the pixels from both a current image and from the output of the spatio-temporal filter unit, being a temporally recursive filtered image. The operation of the spatio-temporal filter unit () can be adjusted by varying the thresholds of the sigma filter () and the selection of pixels. The adjustments can be controlled by a motion estimator (), a motion detector () and a noise estimator ().