Invention Grant
- Patent Title: Reducing computational complexity when video encoding uses bi-predictively encoded frames
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Application No.: US16838115Application Date: 2020-04-02
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Publication No.: US11388434B2Publication Date: 2022-07-12
- Inventor: Soyeb Nagori , Arun Shankar Kudana , Pramod Kumar Swami
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Charles F. Koch; Charles A. Brill; Frank D. Cimino
- Main IPC: H04N19/523
- IPC: H04N19/523 ; H04N19/105 ; H04N19/176 ; H04N19/147 ; H04N19/172 ; H04N19/61 ; H04N19/109 ; H04N19/114 ; H04N19/117 ; H04N19/156 ; H04N19/157

Abstract:
Several techniques aimed at reducing computational complexity when encoding uses bi-predictively encoded frames (B-frames) are implemented in a video encoder. In an embodiment, B-frames are not used as reference frames for encoding P-frames and other B-frames. Non-use of B-frames allows a de-blocking filter used in the video encoder to be switched off when reconstructing encoded B-frames, and use of a lower complexity filter for fractional-resolution motion search for B-frames. In another embodiment, cost functions used in motion estimation for B-frames are simplified to reduce computational complexity. In one more embodiment, fractional pixel refinement in motion search for B-frames is simplified. In yet another embodiment, predictors used in motion estimation for a macro-block in a P-frame are selected from a B-frame that uses a same reference frame as the P-frame.
Public/Granted literature
- US20200236394A1 REDUCING COMPUTATIONAL COMPLEXITY WHEN VIDEO ENCODING USES BI-PREDICTIVELY ENCODED FRAMES Public/Granted day:2020-07-23
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