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Title:
METHODS OF PROCESSING DIGITAL IMAGE AND/OR VIDEO DATA INCLUDING LUMINANCE FILTERING BASED ON CHROMINANCE DATA
Document Type and Number:
WIPO Patent Application WO2005051003
Kind Code:
A3
Abstract:
Digital image and/or video data is processed wherein a frame of the data comprises a plurality of rows and columns of pixels with data for each pixel including a luminance value and a chrominance value. Chrominance values and luminance values may be received for a current pixel and at least one adjacent pixel, and the chrominance values of the current pixel and the at least one adjacent pixel may be compared. The luminance value of the current pixel may be filtered wherein a strength of filtering the luminance value is based on the comparison of the chrominance values of the current and at least one adjacent pixels.

Inventors:
THORELL PER (SE)
Application Number:
PCT/EP2004/012292
Publication Date:
October 27, 2005
Filing Date:
October 29, 2004
Export Citation:
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Assignee:
ERICSSON TELEFON AB L M (SE)
THORELL PER (SE)
International Classes:
G06T5/00; H04N5/208; H04N5/217; H04N7/26; H04N7/46; H04N7/50; H04N9/64; H04N9/77; H04N5/21; (IPC1-7): H04N9/77
Foreign References:
EP0621732A21994-10-26
US4882627A1989-11-21
US5959693A1999-09-28
US4942466A1990-07-17
EP0571171A21993-11-24
US6134373A2000-10-17
US6026190A2000-02-15
US20030021343A12003-01-30
US5974186A1999-10-26
Other References:
PATENT ABSTRACTS OF JAPAN vol. 0152, no. 41 (E - 1080) 21 June 1991 (1991-06-21)
CHRISTINA GOMILA ET AL: "SEI message for film grain encoding", 23 May 2003, JOINT VIDEO TEAM (JVT) OF ISO/IEC MPEG & ITU-T VCEG (ISO/IEC JTC1/SC29/WG11 AND ITU-T SG16 Q6), PAGE(S) 1-14, XP002308742
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