Invention Grant
- Patent Title: Video encoding method and decoding method, apparatuses therefor, programs therefor, and storage media for recording the programs
- Patent Title (中): 视频编码方法和解码方法，其装置，其程序和用于记录节目的存储介质
-
Application No.: US12444135Application Date: 2007-10-05
-
Publication No.: US09055303B2Publication Date: 2015-06-09
- Inventor: Yukihiro Bandoh , Kazuto Kamikura , Yoshiyuki Yashima
- Applicant: Yukihiro Bandoh , Kazuto Kamikura , Yoshiyuki Yashima
- Applicant Address: JP Tokyo
- Assignee: Nippon Telegraph and Telephone Corporation
- Current Assignee: Nippon Telegraph and Telephone Corporation
- Current Assignee Address: JP Tokyo
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2006-276074 20061010
- International Application: PCT/JP2007/069570 WO 20071005
- International Announcement: WO2008/044637 WO 20080417
- Main IPC: H04N7/12
- IPC: H04N7/12 ; H04N11/02 ; H04N11/04 ; H04N19/59 ; H04N19/172 ; H04N19/61 ; H04N19/117 ; H04N19/136 ; H04N19/186 ; H04N19/154 ; H04N19/17
Abstract:
A video encoding method, in which a video signal consisting of two or more signal elements is targeted to be encoded, includes a step of setting a downsampling ratio is set for a specific signal element in a frame, in accordance with the characteristics in the frame; and a step of generating a target video signal to be encoded, by subjecting the specific signal element in the frame to downsampling in accordance with the set downsampling ratio. The frame may be divided into partial areas in accordance with localized characteristics in the frame; and a downsampling ratio for a specific signal element in these partial areas may be set in accordance with the characteristics in each partial area.
Public/Granted literature
Information query
