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1. 发明公开

EP4044602A1 PALETTE CODING FOR SCREEN CONTENT CODING 审中-公开
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.

2. 发明公开

EP3989585A1 HIGH LEVEL SYNTAX FOR HEVC EXTENSIONS 审中-公开
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.

3. 发明公开

EP3900343A1 SYMMETRIC MOTION VECTOR DIFFERENCE CODING 审中-公开
公开(公告)号：EP3900343A1
公开(公告)日：2021-10-27
申请号：EP19842668.6
申请日：2019-12-19
申请人： VID SCALE, Inc.
发明人： LUO, Jiancong , XIU, Xiaoyu , HE, Yuwen , YANG, Hua
IPC分类号： H04N19/176 , H04N19/513 , H04N19/577 , H04N19/70

4. 发明公开

EP3854089A1 COMPLEXITY REDUCTION AND BIT-WIDTH CONTROL FOR BI-DIRECTIONAL OPTICAL FLOW 审中-实审
公开(公告)号：EP3854089A1
公开(公告)日：2021-07-28
申请号：EP19780070.9
申请日：2019-09-17
申请人： Vid Scale, Inc.
发明人： XIU, Xiaoyu , HE, Yuwen , YE, Yan , LUO, Jiancong
IPC分类号： H04N19/176 , H04N19/52 , H04N19/577

5. 发明公开

EP3704859A1 MULTI-TYPE TREE CODING 审中-公开
公开(公告)号：EP3704859A1
公开(公告)日：2020-09-09
申请号：EP18808567.4
申请日：2018-11-01
申请人： Vid Scale, Inc.
发明人： HE, Yuwen , DUANMU, Fanyi , XIU, Xiaoyu , YE, Yan
IPC分类号： H04N19/96 , H04N19/119 , H04N19/70 , H04N19/463 , H04N19/14 , H04N19/176

6. 发明公开

EP3375188A1 SYSTEMS AND METHODS FOR CODING IN SUPER-BLOCK BASED VIDEO CODING FRAMEWORK 审中-公开
公开(公告)号：EP3375188A1
公开(公告)日：2018-09-19
申请号：EP16805613.3
申请日：2016-11-10
申请人： VID SCALE, Inc.
发明人： WANG, Miaohui , HE, Yuwen , YE, Yan , XIU, Xiaoyu
IPC分类号： H04N19/119 , H04N19/14 , H04N19/147 , H04N19/174 , H04N19/70
CPC分类号： H04N19/119 , H04N19/103 , H04N19/14 , H04N19/147 , H04N19/174 , H04N19/70
摘要： Systems and methods are provided for video coding (e.g., encoding and/or decoding). A coding device may include a processor. The processor may be configured to receive a video frame and partition the video frame into a super coding units (SCUs). The processor may be configured to partition each of the SCUs into coding tree units (CTUs) based on a coding mode.

7. 发明公开

EP3251353A1 PALETTE CODING MODES AND PALETTE FLIPPING 审中-公开
标题翻译： PALETTE编码模式和PALETTE FLIPPING
公开(公告)号：EP3251353A1
公开(公告)日：2017-12-06
申请号：EP16710506.3
申请日：2016-01-28
申请人： VID SCALE, Inc.
发明人： XIU, Xiaoyu , YE, Yan , HE, Yuwen
IPC分类号： H04N19/129 , H04N19/176 , H04N19/147 , H04N19/70
CPC分类号： H04N19/129 , H04N19/147 , H04N19/176 , H04N19/182 , H04N19/70
摘要： An palette index map of a video coding unit may be flipped during palette coding if a large run of similar pixels are present at the beginning of the coding unit and a small run of similar pixels are present at the end of the coding unit. The flipping may enable efficient signaling and coding of the large run of pixels. An indication may be sent signaling the flipping. During decoding, an inverse flip may be performed to restore the pixels of the flipped coding unit to their original positions. Selection of a prediction mode for palette coding may take into account various combinations of an index mode run followed by a copy-above mode run. A prediction mode with die smallest per-pixel average bit cost may be selected. Palette sharing may be enabled.

8. 发明公开

EP3198872A1 INTRA BLOCK COPY CODING WITH TEMPORAL BLOCK VECTOR PREDICTION 审中-公开
标题翻译：具有时间块向量预测的块内复制编码
公开(公告)号：EP3198872A1
公开(公告)日：2017-08-02
申请号：EP15778804.3
申请日：2015-09-18
申请人： VID SCALE, Inc.
发明人： HE, Yuwen , YE, Yan , XIU, Xiaoyu
IPC分类号： H04N19/52 , H04N19/176 , H04N19/70 , H04N19/11 , H04N19/147
CPC分类号： H04N19/52 , H04N19/11 , H04N19/147 , H04N19/176 , H04N19/70
摘要： Embodiments disclosed herein operate to improve prior video coding techniques by incorporating an IntraBC flag explicitly at the prediction unit level in merge mode. This flag allows separate selection of block vector (BV) candidates and motion vector (MV) candidates. Specifically, explicit signaling of an IntraBC flag provides information on whether a specific prediction unit will use a BV or an MV. If the IntraBC flag is set, the candidate list is constructed using only spatial and temporal neighboring BVs. If the IntraBC flag is not set, the candidate list is constructed using only spatial and temporal neighboring MVs. An index is then coded which points into the list of candidate BVs or MVs. Further embodiments disclosed herein describe the use of BV-MV bi-prediction in a unified IntraBC and inter framework.
摘要翻译：这里公开的实施例用于通过在合并模式中在预测单元级明确地合并IntraBC标志来改进先前的视频编码技术。该标志允许单独选择块矢量（BV）候选和运动矢量（MV）候选。具体而言，IntraBC标志的明确信令提供关于特定预测单元是使用BV还是MV的信息。如果设置了IntraBC标志，则仅使用空间和时间相邻BV来构造候选列表。如果没有设置IntraBC标志，则仅使用空间和时间相邻MV来构造候选列表。然后将索引编码成指向候选BV或MV的列表。本文公开的其它实施例描述了在统一的IntraBC和帧间框架中使用BV-MV双向预测。

9. 发明公开

EP4294009A3 BI-PREDICTION FOR VIDEO CODING 审中-实审
公开(公告)号：EP4294009A3
公开(公告)日：2024-02-28
申请号：EP23207616.6
申请日：2019-09-26
申请人： Vid Scale, Inc.
发明人： HE, Yuwen , LUO, Jiancong , XIU, Xiaoyu , YE, Yan
IPC分类号： H04N19/137 , H04N19/159
摘要： Systems, methods, and instrumentalities may be provided for determining whether to bypass bidirectional optical flow (BDOF) if BDOF is used in combination with bi-prediction with coding unit (CU) weights (e.g., generalized bi-prediction (GBi)). A coding system may combine coding modes, coding techniques, and/or coding tools. The coding system may include a wireless transmit/receive unit (WTRU). For example, the coding system may combine BDOF and bi-prediction with CU weights (BCW). BDOF may include refining a motion vector associated with a current CU based at least in part on gradients associated with a location in the current CU. The coding system may determine that BDOF is enabled, and/or that bi-prediction with CU weights is enabled for the current CU. The coding system's determination that bi-prediction with CU weights is enabled and/or that BDOF is enabled may be based on one or more indications.

10. 发明公开

EP4040791A1 INTRA BLOCK COPY MODE FOR SCREEN CONTENT CODING 审中-公开
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.

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