Invention Grant
- Patent Title: Image decoding device and method of chrominance correction with linear-interpolation
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Application No.: US14758187Application Date: 2013-12-25
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Publication No.: US10230993B2Publication Date: 2019-03-12
- Inventor: Mitsuru Maeda , Masato Shima
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. I.P. Division
- Priority: JP2012-287786 20121228; JP2013-213990 20131011
- International Application: PCT/JP2013/007563 WO 20131225
- International Announcement: WO2014/103292 WO 20140703
- Main IPC: H04N7/12
- IPC: H04N7/12 ; H04N19/895 ; H04N19/176 ; H04N19/44 ; H04N19/50 ; H04N19/124 ; H04N19/91 ; H04N19/107 ; H04N19/103 ; H04N19/186 ; H04N19/162 ; H04N19/59
Abstract:
A linear interpolation filter used for intra-prediction is applied to not only a luminance signal, but also a chrominance signal. A noise like contouring, which may occur in the chrominance signal, is reduced by performing control independently on the chrominance signal. Also, only a square block has been supported in related art. However, a rectangular block is also supported. Accordingly, 4:2:2 can be applied.
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