公开(公告)号：US11659181B2

公开(公告)日：2023-05-23

申请号：US16892910

申请日：2020-06-04

Applicant: BEIJING BAIDU NETCOM SCIENCE AND TECHNOLOGY CO., LTD.

Inventor： Xiaoming Wang ,  Huaifei Xing ,  Wenpeng Ding ,  Huifeng Shen ,  Feifei Cao

IPC: G06K9/00 ,  H04N19/124 ,  G06T7/70 ,  G06V20/40 ,  G06V10/25 ,  G06V40/10 ,  G06F18/22 ,  G06V10/80 ,  H04N19/102 ,  H04N19/167 ,  G06V10/22 ,  G06V10/764 ,  H04N19/169 ,  H04N19/115 ,  G06V10/28 ,  H04N19/17

CPC classification number: H04N19/124 ,  G06F18/22 ,  G06T7/70 ,  G06V10/22 ,  G06V10/25 ,  G06V10/28 ,  G06V10/764 ,  G06V10/811 ,  G06V20/41 ,  G06V40/10 ,  H04N19/102 ,  H04N19/115 ,  H04N19/167 ,  H04N19/169 ,  H04N19/17 ,  G06T2207/10016

Abstract: Embodiments of the present disclosure relate to a method and apparatus for processing a video. The method may include: acquiring object regions obtained by performing object detection on a target video frame, a type of an object in each of the object regions being a preset type; determining, for an object region in the acquired object regions, in response to determining that the object region satisfies a preset condition, that the object region is a non-ROI; using an object region other than the non-ROI in the object regions of the target video frame as a ROI; and acquiring a quantization parameter change corresponding to each ROI, and encoding the target video frame based on the quantization parameter change.

公开(公告)号：US11582449B2

公开(公告)日：2023-02-14

申请号：US17338259

申请日：2021-06-03

Applicant: BEIJING BAIDU NETCOM SCIENCE AND TECHNOLOGY CO., LTD.

Inventor： Jiaojiao Zhang ,  Wenpeng Ding

IPC: H04N19/11 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176

Abstract: A set of rough prediction modes including a MPM subset is determined for a code block during image encoding. A first prediction mode having a mode cost less than a first threshold is selected from the set of rough prediction modes, and a second prediction mode having a mode cost less than a second threshold is selected from the MPM subset. A candidate mode subset is determined based on mode types of prediction modes contained in the set of rough prediction modes and a ranking result of mode costs of the prediction modes, when the mode cost of the first prediction mode is different from the mode cost of the second prediction mode. A target prediction mode is determined for the code block from the candidate mode subset. The code block is encoded with the target prediction mode.

公开(公告)号：US20210377543A1

公开(公告)日：2021-12-02

申请号：US17353329

申请日：2021-06-21

Applicant: Beijing Baidu Netcom Science and Technology Co., Ltd.

Inventor： Le Shi ,  Wenpeng Ding

IPC: H04N19/14 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172

Abstract: A method, apparatus, device and medium for coding a video are provided. An implementation plan includes: determining an initial video frame structure based on a preset threshold for a B-frame number; in response to determining that the initial video frame structure meets a preset condition, shortening the initial video frame structure to obtain a candidate video frame structure set; determining a target video frame structure from the candidate video frame structure set; and performing video coding on video frames in a to-be-coded video frame sequence according to the target video frame structure.