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公开(公告)号：US20210195214A1
公开(公告)日：2021-06-24
申请号：US16895430
申请日：2020-06-08
Inventor： Xiaoming Wang , Huaifei Xing , Wenpeng Ding , Huifeng Shen , Feifei Cao
IPC: H04N19/172 , H04N19/167
Abstract: Embodiments of the present disclosure relate to a method and apparatus for processing a video frame. The method may include: acquiring a sequence of video frames of a video; ascertaining, in the sequence of the video frames, a previous frame, and ascertaining, in the sequence of the video frames, a subsequent frame corresponding to the ascertained previous frame based on acquired number of frames from the previous frame to the subsequent frame. An update step is performed as follows: acquiring object regions detected respectively in the ascertained previous frame and the ascertained subsequent frame, and confidence levels of the object regions; fusing a confidence level of a first object region and a confidence level of a second object region, and updating the confidence level of the second object region based on the fusion result; and updating the ascertained previous frame and the ascertained subsequent frame.
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公开(公告)号：US11632552B2
公开(公告)日：2023-04-18
申请号：US17350303
申请日：2021-06-17
Inventor： Le Shi , Wenpeng Ding
IPC: H04N19/136 , H04N19/172 , H04N19/114
Abstract: A method and apparatus for coding a video, device and medium are provided. An implementation of the method include: determining a first video frame structure and a second video frame structure based on a pre-set threshold for a B-frame number; determining a target video frame structure based on the first video frame structure, the second video frame structure, and a pre-set condition; and coding video frames in a to-be-coded video frame sequence according to the target video frame structure.
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3.发明申请公开(公告)号：US20210258580A1
公开(公告)日：2021-08-19
申请号：US17239181
申请日：2021-04-23
Inventor： Le Shi , Wenpeng Ding
IPC: H04N19/124 , H04N19/463 , H04N19/184
Abstract: The present disclosure discloses a method and apparatus for coding a video, an electronic device and a computer-readable storage medium. A specific implementation scheme is: coding a sampled video frame sequence of a source video by using a preset coding mode to obtain a sample coding overhead; analyzing frame types of frames to be coded in the source video to obtain a frame type sequence of the frames to be coded; determining a predictive coding overhead of the source video according to the sample coding overhead of the source video, the frame type sequence of the frames to be coded, and quantization parameters of coding modes to be used corresponding to different frame types; and determining a coding strategy based on the predictive coding overhead and requirements of transmission bit rate limit information.
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公开(公告)号：US20210192217A1
公开(公告)日：2021-06-24
申请号：US16892910
申请日：2020-06-04
Inventor： Xiaoming Wang , Huaifei Xing , Wenpeng Ding , Huifeng Shen , Feifei Cao
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.
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5.发明授权公开(公告)号：US11463697B2
公开(公告)日：2022-10-04
申请号：US17239181
申请日：2021-04-23
Inventor： Le Shi , Wenpeng Ding
IPC: H04N19/124 , H04N19/184 , H04N19/463
Abstract: A method and apparatus for coding a video, an electronic device and a computer-readable storage medium. A specific implementation scheme is: coding a sampled video frame sequence of a source video by using a preset coding mode to obtain a sample coding overhead; analyzing frame types of frames to be coded in the source video to obtain a frame type sequence of the frames to be coded; determining a predictive coding overhead of the source video according to the sample coding overhead of the source video, the frame type sequence of the frames to be coded, and quantization parameters of coding modes to be used corresponding to different frame types; and determining a coding strategy based on the predictive coding overhead and requirements of transmission bit rate limit information.
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Patent Agency Ranking
公开(公告)号：US11700373B2
公开(公告)日：2023-07-11
申请号：US17129504
申请日：2020-12-21
Inventor： Ke Lin , Wenpeng Ding
IPC: H04N19/124 , H04N19/136 , H04N19/176 , H04N19/177
CPC classification number: H04N19/124 , H04N19/136 , H04N19/176 , H04N19/177
Abstract: The present disclosure provides a method and an apparatus for coding a video, a device and a medium. An estimated quantization parameter of a target picture in a target GOP is determined. An inter-picture change degree of the target GOP is determined. A propagation ratio of a target picture block to a reference picture block in the target picture is determined based on the estimated quantization parameter of the target picture and the inter-picture change degree. The video is coded based on the propagation ratio.
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公开(公告)号：US11490084B2
公开(公告)日：2022-11-01
申请号：US17353415
申请日：2021-06-21
Inventor： Ke Lin , Wenpeng Ding
IPC: H04N19/124 , H04N19/13 , H04N19/132 , H04N19/176
Abstract: An implementation of a method for adjusting a quantization parameter for adaptive quantization may include: acquiring at least one pixel block corresponding to a to-be-compressed image and an initial quantization parameter adjustment value corresponding to the pixel block, the initial quantization parameter adjustment value being generated based on an image objective quality evaluation index; determining a just noticeable difference, JND, threshold corresponding to each pixel point in the at least one pixel block; determining a block JND threshold corresponding to each pixel block, based on the JND threshold corresponding to each pixel point in the at least one pixel block; and adjusting the corresponding initial quantization parameter adjustment value based on the block JND threshold to generate an adjusted quantization parameter adjustment value corresponding to the at least one pixel block.
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公开(公告)号：US11375209B2
公开(公告)日：2022-06-28
申请号：US16895430
申请日：2020-06-08
Inventor： Xiaoming Wang , Huaifei Xing , Wenpeng Ding , Huifeng Shen , Feifei Cao
IPC: H04N19/172 , H04N19/167
Abstract: Embodiments of the present disclosure relate to a method and apparatus for processing a video frame. The method may include: acquiring a sequence of video frames of a video; ascertaining, in the sequence of the video frames, a previous frame, and ascertaining, in the sequence of the video frames, a subsequent frame corresponding to the ascertained previous frame based on acquired number of frames from the previous frame to the subsequent frame. An update step is performed as follows: acquiring object regions detected respectively in the ascertained previous frame and the ascertained subsequent frame, and confidence levels of the object regions; fusing a confidence level of a first object region and a confidence level of a second object region, and updating the confidence level of the second object region based on the fusion result; and updating the ascertained previous frame and the ascertained subsequent frame.
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公开(公告)号：US20210368179A1
公开(公告)日：2021-11-25
申请号：US17350303
申请日：2021-06-17
Inventor： Le Shi , Wenpeng Ding
IPC: H04N19/136 , H04N19/172
Abstract: A method and apparatus for coding a video, device and medium are provided. An implementation of the method include: determining a first video frame structure and a second video frame structure based on a pre-set threshold for a B-frame number; determining a target video frame structure based on the first video frame structure, the second video frame structure, and a pre-set condition; and coding video frames in a to-be-coded video frame sequence according to the target video frame structure.
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10.发明授权公开(公告)号：US11792407B2
公开(公告)日：2023-10-17
申请号：US17353329
申请日：2021-06-21
Inventor： Le Shi , Wenpeng Ding
IPC: H04N19/14 , H04N19/105 , H04N19/159 , H04N19/172
CPC classification number: 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.
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