公开(公告)号：EP4250745A2

公开(公告)日：2023-09-27

申请号：EP23172555.7

申请日：2013-07-09

申请人： Vid Scale, Inc.

发明人： He, Yuwen ,  YE, Yan ,  HE, Yong ,  McCLELLAN, George W. ,  Ryu, Eun

IPC分类号： H04N21/2343

摘要： Methods and systems are disclosed for a mobile device to decode video based on available power and/or energy. For example, the mobile device may receive a media description file (MDF) from for a video stream from a video server. The MDF may include complexity information associated with a plurality of video segments. The complexity information may be related to the amount of processing power to be utilized for decoding the segment at the mobile device. The mobile device may determine at least one power metric for the mobile device. The mobile device may determine a first complexity level to be requested for a first video segment based on the complexity information from the MDF and the power metric. The mobile device may dynamically alter the decoding process to save energy based on the detected power/energy level.

公开(公告)号：EP4040791A1

公开(公告)日：2022-08-10

申请号：EP22161946.3

申请日：2016-06-08

申请人： Vid Scale, Inc.

发明人： XIU, Xiaoyu ,  YE, Yan ,  He, Yuwen

IPC分类号： H04N19/593 ,  H04N19/105 ,  H04N19/186

摘要： A video block of a current picture may be coded in an intra block copy (IBC) mode. Weighted prediction may be disabled for the IBC-coded screen content video block. Fractional block vectors may be used for the chroma components of the IBC-coded video block. An interpolation filter may be utilized to generate chroma prediction samples for the video block. A decoded version of the current reference picture may be added to both reference picture list L0 and reference picture list L1 that are associated with the IBC-coded video block. When constrained intra prediction is applied, reference samples that may be used to predict an intra-coded video block may be limited to those in intra-coded neighboring blocks. The range of IBC searches may be restricted by imposing a maximum absolute value for block vectors.

公开(公告)号：EP4044602A1

公开(公告)日：2022-08-17

申请号：EP22162856.3

申请日：2015-03-16

申请人： Vid Scale, Inc.

发明人： TSAI, Chia-Ming ,  He, Yuwen ,  XIU, Xiaoyu ,  YE, Yan

IPC分类号： H04N19/94 ,  H04N19/593

摘要： Video data may be palette decoded. Data defining a palette table may be received. The palette table may comprise index values corresponding to respective colors. Palette index prediction data may be received and may comprise data indicating index values for at least a portion of a palette index map mapping pixels of the video data to color indices in the palette table. The palette index prediction data may comprise run value data associating run values with index values for at least a portion of a palette index map. A run value may be associated with an escape color index. The palette index map may be generated from the palette index prediction data at least in part by determining whether to adjust an index value of the palette index prediction data based on a last index value. The video data may be reconstructed in accordance with the palette index map.

公开(公告)号：EP3989585A1

公开(公告)日：2022-04-27

申请号：EP21211134.8

申请日：2014-10-10

申请人： VID SCALE, Inc.

发明人： HE, Yong ,  YE, Yan ,  XIU, Xiaoyu ,  He, Yuwen

IPC分类号： H04N19/70 ,  H04N19/33 ,  H04N19/105 ,  H04N19/187 ,  H04N19/169

摘要： A video coding device may identify a network abstraction layer (NAL) unit. The video coding device may determine whether the NAL unit includes an active parameter set for a current layer. When the NAL unit includes the active parameter set for the current layer, the video coding device may set an NAL unit header layer identifier associated with the NAL unit to at least one of: zero, a value indicative of the current layer, or a value indicative of a reference layer of the current layer. The NAL unit may be a picture parameter set (PPS) NAL unit. The NAL unit may be a sequence parameter set (SPS) NAL unit.

公开(公告)号：EP3661215A1

公开(公告)日：2020-06-03

申请号：EP19214507.6

申请日：2013-09-27

申请人： Vid Scale, Inc.

发明人： Dong, Jie ,  He, Yuwen ,  Ye, Yan

IPC分类号： H04N19/80

摘要： Cross-plane filtering may be used to restore blurred edges and/or textures in one or both chroma planes using information from a corresponding luma plane. Adaptive cross-plane filters may be implemented. Cross-plane filter coefficients may be quantized and/or signaled such that overhead in a bitstream minimizes performance degradation. Cross-plane filtering may be applied to select regions of a video image (e.g., to edge areas). Cross-plane filters may be implemented in single-layer video coding systems and/or multi-layer video coding systems.

公开(公告)号：EP4250745A3

公开(公告)日：2023-11-15

申请号：EP23172555.7

申请日：2013-07-09

申请人： Vid Scale, Inc.

发明人： He, Yuwen ,  YE, Yan ,  HE, Yong ,  McCLELLAN, George W. ,  Ryu, Eun

IPC分类号： H04N21/2343 ,  H04N21/414 ,  H04N21/442 ,  H04N21/845 ,  H04N21/854 ,  H04W52/00 ,  G06F1/3212 ,  G06F1/329 ,  H04L65/612 ,  H04L65/613 ,  H04L65/756 ,  H04N19/117 ,  H04N19/127 ,  H04N19/136 ,  H04N19/156 ,  H04N19/187 ,  H04N19/44

摘要： Methods and systems are disclosed for a mobile device to decode video based on available power and/or energy. For example, the mobile device may receive a media description file (MDF) from for a video stream from a video server. The MDF may include complexity information associated with a plurality of video segments. The complexity information may be related to the amount of processing power to be utilized for decoding the segment at the mobile device. The mobile device may determine at least one power metric for the mobile device. The mobile device may determine a first complexity level to be requested for a first video segment based on the complexity information from the MDF and the power metric. The mobile device may dynamically alter the decoding process to save energy based on the detected power/energy level.

公开(公告)号：EP4060992A1

公开(公告)日：2022-09-21

申请号：EP22166000.4

申请日：2017-05-11

申请人： Vid Scale, Inc.

发明人： XIU, Xiaoyu ,  He, Yuwen ,  YE, Yan

IPC分类号： H04N19/463 ,  H04N19/96 ,  H04N19/577 ,  H04N19/70

摘要： Systems and methods are described for video coding using generalized bi-prediction. In an exemplary embodiment, to code a current block of a video in a bitstream, a first reference block is selected from a first reference picture and a second reference block is selected from a second reference picture. Each reference block is associated with a weight, where the weight may be an arbitrary weight ranging, e.g., between 0 and 1. The current block is predicted using a weighted sum of the reference blocks. The weights may be selected from among a plurality of candidate weights. Candidate weights may be signaled in the bitstream or may be derived implicitly based on a template. Candidate weights may be pruned to avoid out-of-range or substantially duplicate candidate weights. Generalized bi-prediction may additionally be used in frame rate up conversion.

公开(公告)号：EP3588958A1

公开(公告)日：2020-01-01

申请号：EP19185087.4

申请日：2013-08-29

申请人： Vid Scale, Inc.

发明人： XIU, Xiaoyu ,  YE, Yan ,  He, Yong ,  He, Yuwen

IPC分类号： H04N19/31 ,  H04N19/33 ,  H04N19/51 ,  H04N19/52 ,  H04N19/70

摘要： Inter-layer motion mapping information may be used to enable temporal motion vector prediction (TMVP) of an enhancement layer of a bitstream. For example, a reference picture and a motion vector (MV) of an inter-layer video block may be determined. The reference picture may be determined based on a collocated base layer video block. For example, the reference picture may be a collocated inter-layer reference picture of the reference picture of the collocated base layer video block. The MV may be determined based on a MV of the collocated base layer video block. For example, the MV may be determined by determining the MV of the collocated base layer video block and scaling the MV of the collocated base layer video block according to a spatial ratio between the base layer and the enhancement layer. TMVP may be performed on the enhancement layer picture using the MV of the inter-layer video block.