Invention Grant
US09262986B2 Reference frame management for screen content video coding using hash or checksum functions
有权
使用散列或校验和功能的屏幕内容视频编码的参考帧管理
- Patent Title: Reference frame management for screen content video coding using hash or checksum functions
- Patent Title (中): 使用散列或校验和功能的屏幕内容视频编码的参考帧管理
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Application No.: US13526956Application Date: 2012-06-19
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Publication No.: US09262986B2Publication Date: 2016-02-16
- Inventor: Sijia Chen , Sawyer Shan , Hui Liu , Siping Tao
- Applicant: Sijia Chen , Sawyer Shan , Hui Liu , Siping Tao
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Edell, Shapiro & Finnan, LLC
- Main IPC: H04N7/32
- IPC: H04N7/32 ; G09G5/00 ; H04N19/105 ; H04N19/14 ; H04N19/17 ; H04N19/189 ; H04N19/58

Abstract:
Techniques are provided for reference frame management for screen content video coding using hash or checksum functions. A video data stream including a plurality of frames is received, each frame including a plurality of pixels that define content within the frame. A plurality of hash code values associated with partitioned portions of a current frame are determined, where each hash code value is determined as an output value from a hash or checksum function based upon an input value comprising pixel values for a corresponding partition within the current frame. The current frame is compared with a plurality of reference frames based upon a comparison of the hash code values of the current frame with hash code values of the reference frames. A reference frame is selected as a candidate reference frame for coding the current frame.
Public/Granted literature
- US20130148721A1 Reference Frame Management for Screen Content Video Coding Using Hash or Checksum Functions Public/Granted day:2013-06-13
Information query