公开(公告)号：US20220279204A1

公开(公告)日：2022-09-01

申请号：US17187132

申请日：2021-02-26

Applicant: QUALCOMM Incorporated

Inventor： Narendranath MALAYATH ,  Kai WANG ,  Xue FANG

IPC: H04N19/52 ,  H04N19/547 ,  H04N19/587

Abstract: Systems, methods, and computer-readable media are provided for efficient video coding. An method can include determining, during a first coding stage implemented at a first frame rate, first motion vectors for a first subset of frames in a sequence of frames; determining, during a second coding stage, second motion vectors for a second subset of frames in the sequence of frames, wherein a portion of the second motion vectors is calculated based on one or more of the first motion vectors; and reconstruct, during the second coding stage, the first subset of frames using the first motion vectors; and reconstruct, during the second video coding stage, the second subset of frames using the second motion vectors, the first coding stage and the second coding stage being implemented in parallel, and the second coding stage being implemented at a second frame rate that is higher than the first frame rate.

公开(公告)号：US20190238849A1

公开(公告)日：2019-08-01

申请号：US15885222

申请日：2018-01-31

Applicant: QUALCOMM Incorporated

Inventor： Xue FANG ,  Srikanth ALAPARTHI

IPC: H04N19/126 ,  H04N19/96 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/126 ,  H04N19/124 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96

Abstract: Techniques and systems are provided for processing video data. For example, an apparatus (e.g., a coding device, such as an encoder) can receive a residual portion of a block of a frame of the video data. The block is a first block in a row of the frame. The apparatus can receive a quantization parameter (QP) value determined for the residual portion of the block, and can determine all transform coefficients of the residual portion of the block have zero values. The transform coefficients can include quantized transform coefficients. The device can compare the received QP value determined for the residual portion of the block to a threshold QP value, and can determine a final QP value for the residual portion of the block based on whether the received QP value is greater than the threshold QP value.