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. 04, 2012
Filed:
Dec. 19, 2008
Knut Inge Hvidsten, Oslo, NO;
Knut Inge Hvidsten, Oslo, NO;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A method in a decoding process for determining full-resolution chroma pixel information (Cx) corresponding to a spatial fraction of a still-image or a video-frame represented by full-resolution luma pixel information (Y) and decimated chroma pixel information (Cxd) decimated by a decimation process, including: receiving the full-resolution luma pixel information at video or image processing apparatus; decimating, at the video or image processing apparatus, the full-resolution luma pixel information (Y) by said decimation process resulting in a decimated spatial luma fraction (Yd); determining, with the video or image processing apparatus, if the decimated chroma pixel information (Cxd) at least approximately can be expressed by {(Yd+shift1)*scale−shift2}; storing, in an electronic memory of the video or image processing apparatus, values of scale, shift1, and shift2 that result in a minimum deviation between {(Yd+shift1)*scale−shift2} and Cxd; and calculating, with the video or image processing apparatus, {(Y+shift1)*scale−shift2} as a first candidate (Cx) for the full-resolution chroma pixel information (Cx).