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公开(公告)号:US20130070854A1
公开(公告)日:2013-03-21
申请号:US13585423
申请日:2012-08-14
申请人: Xianglin Wang , Yunfei Zheng , Vadim Seregin , Marta Karczewicz
发明人: Xianglin Wang , Yunfei Zheng , Vadim Seregin , Marta Karczewicz
IPC分类号: H04N7/34
CPC分类号: H04N19/436 , H04N19/52
摘要: For each prediction unit (PU) belonging to a coding unit (CU), a video coder generates a candidate list. The video coder generates the candidate list such that each candidate in the candidate list that is generated based on motion information of at least one other PU is generated without using motion information of any of the PUs belonging to the CU. After generating the candidate list for a PU, the video coder generates a predictive video block for the PU based on one or more reference blocks indicated by motion information of the PU. The motion information of the PU is determinable based on motion information indicated by a selected candidate in the candidate list for the PU.
摘要翻译: 对于属于编码单元(CU)的每个预测单元(PU),视频编码器生成候选列表。 视频编码器生成候选列表,使得在不使用属于CU的任何PU的运动信息的情况下生成基于至少一个其他PU的运动信息生成的候选列表中的每个候选。 在生成PU的候选列表之后,视频编码器基于由PU的运动信息指示的一个或多个参考块来生成PU的预测视频块。 PU的运动信息可以基于PU的候选列表中由选择的候选者指示的运动信息来确定。
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公开(公告)号:US20130070848A1
公开(公告)日:2013-03-21
申请号:US13613382
申请日:2012-09-13
申请人: Liwei Guo , Marta Karczewicz , Xianglin Wang
发明人: Liwei Guo , Marta Karczewicz , Xianglin Wang
IPC分类号: H04N7/32
CPC分类号: H04N19/13 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/61 , H04N19/91
摘要: A video coder, such as a video encoder or a video decoder, identifies an entropy coding context in a set of one or more entropy coding contexts. The video coder identifies the entropy coding context without reference to a neighboring coding unit that is above a current coding unit in a current picture. The video coder then entropy codes a short distance intra-prediction (SDIP) syntax element of a coding unit (CU) using the identified entropy coding context. The SDIP syntax element at least partially defines a mode by which the CU is partitioned into a set of one or more transform units.
摘要翻译: 诸如视频编码器或视频解码器的视频编码器识别一组或多个熵编码上下文中的熵编码上下文。 视频编码器不参照当前图像中当前编码单元之上的相邻编码单元来识别熵编码上下文。 视频编码器然后使用所识别的熵编码上下文对编码单元(CU)的短距离帧内预测(SDIP)语法元素进行熵编码。 SDIP语法元素至少部分地定义了CU被分割成一组一个或多个变换单元的模式。
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公开(公告)号:US20130044809A1
公开(公告)日:2013-02-21
申请号:US13585657
申请日:2012-08-14
CPC分类号: H04N19/649 , H04N19/117 , H04N19/167 , H04N19/182 , H04N19/42 , H04N19/60 , H04N19/647 , H04N19/82 , H04N19/85 , H04N19/86 , H04N19/96
摘要: In general, techniques are described for applying partition-based filters when coding video data. A device comprising at least one processor may be configured to implement the techniques. The processor selects a filter to apply near a boundary of a first portion of the video data and determines at least one of the plurality of filter coefficients of the selected filter for which the video data will not be available to be filtered. Based on the determination, the processor determines a partial filter that does not include the at least one of the plurality of filter coefficients for which the video data will not be available to be filtered. The processor renormalizes the plurality of filter coefficients included within the partial filter and applies the renormalized partial filter near the boundary of the first portion of the video data to generate a filtered first portion of the video data.
摘要翻译: 一般来说,描述了在编码视频数据时应用基于分区的滤波器的技术。 包括至少一个处理器的设备可以被配置为实现这些技术。 处理器选择滤波器以在视频数据的第一部分的边界附近应用,并且确定所选择的滤波器的多个滤波器系数中的至少一个,视频数据将不可用于其被滤波。 基于该确定,处理器确定不包括视频数据将不能被滤波的多个滤波器系数中的至少一个的部分滤波器。 处理器对包括在部分滤波器内的多个滤波器系数进行重新归一化,并且在视频数据的第一部分的边界附近应用重新归一化的部分滤波器,以生成经过滤波的视频数据的第一部分。
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公开(公告)号:US20130022104A1
公开(公告)日:2013-01-24
申请号:US13548742
申请日:2012-07-13
申请人: Ying Chen , In Suk Chong , Marta Karczewicz
发明人: Ying Chen , In Suk Chong , Marta Karczewicz
IPC分类号: H04N7/26
CPC分类号: H04N19/174 , H04N19/46 , H04N19/61 , H04N19/70
摘要: In one example, a video decoder is configured to store an adaptation parameter set (APS) data structure in a buffer of a coding device, wherein the APS data structure includes signaling data applicable to one or more slices of video data, decode at least one of the slices based on the signaling data of the APS data structure, after decoding the slice, determine that the APS data structure can be removed from the buffer, remove the APS data structure from the buffer based on the determination, and decode one or more additional slices of the video data after removing the APS data structure from the buffer.
摘要翻译: 在一个示例中,视频解码器被配置为在编码设备的缓冲器中存储适配参数集(APS)数据结构,其中APS数据结构包括适用于一个或多个视频数据片段的信令数据,解码至少一个 基于APS数据结构的信令数据,在解码片之后,确定可以从缓冲器中移除APS数据结构,基于该确定从缓冲器中移除APS数据结构,并解码一个或多个 从缓冲区中删除APS数据结构后的视频数据的附加片段。
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公开(公告)号:US20120320968A1
公开(公告)日:2012-12-20
申请号:US13487914
申请日:2012-06-04
申请人: Yunfei Zheng , Xianglin Wang , Marta Karczewicz
发明人: Yunfei Zheng , Xianglin Wang , Marta Karczewicz
摘要: A unified candidate block set for both adaptive motion vector prediction (AMVP) mode and merge mode for use in inter-prediction is proposed. In general, the same candidate block set is used regardless of which motion vector prediction mode (e.g., merge mode or AMVP mode) is used. In other examples of this disclosure, one candidate block in a set of candidate blocks is designated as an additional candidate block. The additional candidate block is used if one of the other candidate blocks is unavailable. Also, the disclosure proposes a checking pattern where the left candidate block is checked before the below left candidate block. Also, the above candidate block is checked before the right above candidate block.
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公开(公告)号:US20120314026A1
公开(公告)日:2012-12-13
申请号:US13491227
申请日:2012-06-07
申请人: Ying Chen , Peisong Chen , Marta Karczewicz
发明人: Ying Chen , Peisong Chen , Marta Karczewicz
CPC分类号: H04N19/98 , H04N19/124 , H04N19/159 , H04N19/164 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/30 , H04N19/40 , H04N19/428 , H04N19/61 , H04N19/70
摘要: In an example aspects of this disclosure generally relate to a method of coding video data that includes determining a first bit depth for outputting video data and a second bit depth for coding the video data, wherein the first bit depth is less than the second bit depth. The method also includes determining whether the video data will be used as reference data when coding other video data. The method also includes storing, based on the determination, the video data at the first bit depth when the video data is not used as reference data, and the video data at the second bit depth when the video data is used as reference data.
摘要翻译: 在一个示例中,本公开的一些方面通常涉及一种编码视频数据的方法,包括确定用于输出视频数据的第一位深度和用于对视频数据进行编码的第二位深度,其中第一位深度小于第二位深度 。 该方法还包括在编码其他视频数据时确定视频数据是否将被用作参考数据。 该方法还包括当视频数据不用作参考数据时,基于该确定将第一位深度处的视频数据和视频数据用作参考数据时的第二位深度处的视频数据进行存储。
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公开(公告)号:US20120127270A1
公开(公告)日:2012-05-24
申请号:US13301225
申请日:2011-11-21
申请人: Rong Zhang , Ying Chen , Marta Karczewicz
发明人: Rong Zhang , Ying Chen , Marta Karczewicz
IPC分类号: H04N13/00
CPC分类号: G06T7/0071 , G06T7/579
摘要: This disclosure describes techniques for estimating a depth of image objects for a two-dimensional (2D) view of a video presentation. For example, a plurality of feature points may be determined for a 2D view. The plurality of feature points may be used to estimate global motion, e.g., motion of an observer (e.g., camera), of the 2D view. For example, the plurality of feature points may be used to generate a global motion frame difference. The global motion frame difference may be used to create a depth map for the 2D view, which may be used to generate an alternative view of the video presentation that may be used to display a three-dimensional (3D) video presentation.
摘要翻译: 本公开描述了用于估计视频呈现的二维(2D)视图的图像对象的深度的技术。 例如,可以为2D视图确定多个特征点。 多个特征点可以用于估计2D视图的全局运动,例如观察者(例如,照相机)的运动。 例如,可以使用多个特征点来产生全局运动帧差。 全局运动帧差可以用于创建2D视图的深度图,其可以用于生成可用于显示三维(3D)视频呈现的视频呈现的替代视图。
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公开(公告)号:US20120051438A1
公开(公告)日:2012-03-01
申请号:US13178415
申请日:2011-07-07
申请人: In Suk Chong , Marta Karczewicz , Wei-Jung Chien
发明人: In Suk Chong , Marta Karczewicz , Wei-Jung Chien
IPC分类号: H04N7/26
CPC分类号: H04N19/85 , H04N19/117 , H04N19/14 , H04N19/176 , H04N19/182 , H04N19/42 , H04N19/46 , H04N19/70 , H04N19/82
摘要: Filtering is applied at an encoder, and filter information describing a set of filters is encoded in the bitstream to enable a decoder to identify the filtering that was applied at the encoder. The decoder receives encoded video data that includes the filter information, decodes the video data, and applies filtering based on the filtering information. The decoder applies the same filtering that was applied at the encoder. To potentially reduce the number of bits needed to reconstruct the set of filters and other filter information as well as to potentially improve decoder performance, filter description syntax describing the set of filters can be included in the bitstream. The filter description syntax may identify a number of filters in a set of filters, a maximum number of filters in a set of filters, and/or identify a shape of filters in a set of filters.
摘要翻译: 在编码器处应用滤波,并且在比特流中编码描述一组滤波器的滤波器信息,以使解码器能够识别在编码器处应用的滤波。 解码器接收包括滤波器信息的编码视频数据,解码视频数据,并根据滤波信息应用滤波。 解码器应用与编码器相同的滤波。 为了潜在地减少重建滤波器组和其它滤波器信息所需的位数以及潜在地提高解码器性能,描述滤波器集合的滤波器描述语法可以被包括在比特流中。 过滤器描述语法可以标识一组过滤器中的多个过滤器,一组过滤器中的过滤器的最大数量和/或识别一组过滤器中的过滤器的形状。
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公开(公告)号:US20120027089A1
公开(公告)日:2012-02-02
申请号:US13179427
申请日:2011-07-08
申请人: Wei-Jung Chien , Marta Karczewicz , Peisong Chen , Xianglin Wang
发明人: Wei-Jung Chien , Marta Karczewicz , Peisong Chen , Xianglin Wang
IPC分类号: H04N7/32
CPC分类号: H04N19/52 , H04N19/109 , H04N19/114 , H04N19/115 , H04N19/13 , H04N19/159 , H04N19/162 , H04N19/174 , H04N19/176 , H04N19/177 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/573 , H04N19/577 , H04N19/61 , H04N19/70 , H04N19/91
摘要: This disclosure relates to techniques for reducing a cost of coding prediction information in video coding. Video blocks in a generalized P/B (GPB) frame are encoded using up to two motion vectors calculated from reference pictures in two separate reference picture lists that are identical. Video blocks of a GPB frame may, therefore, be encoded using a bidirectional prediction mode with a first motion vector from a reference picture in a first reference picture list and a second motion vector from the same or substantially similar reference picture in a second reference picture list. The techniques include jointly coding the first and second motion vectors for a video block of a GPB frame. The techniques include coding the first motion vector relative to a first motion predictor generated from a motion vector of a neighboring block, and coding the second motion vector relative to the first motion vector.
摘要翻译: 本公开涉及用于降低视频编码中的预测信息编码成本的技术。 广义P / B(GPB)帧中的视频块使用相同的两个单独参考图片列表中的参考图片计算的最多两个运动矢量进行编码。 因此,可以使用具有来自第一参考图像列表中的参考图像的第一运动矢量和来自第二参考图像中相同或基本相似的参考图像的第二运动矢量的双向预测模式来编码GPB帧的视频块 列表。 这些技术包括联合编码GPB帧的视频块的第一和第二运动矢量。 所述技术包括相对于从相邻块的运动矢量生成的第一运动预测器对第一运动矢量进行编码,以及相对于第一运动矢量对第二运动矢量进行编码。
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公开(公告)号:US20110317771A1
公开(公告)日:2011-12-29
申请号:US12908537
申请日:2010-10-20
申请人: Ying Chen , Marta Karczewicz
发明人: Ying Chen , Marta Karczewicz
IPC分类号: H04N7/26
CPC分类号: H04N21/8455 , G11B27/007 , G11B27/105 , G11B27/3027 , H04N19/70
摘要: This disclosure describes techniques relevant to HTTP streaming of media data. According to these techniques, a server device may signal an open decoding refresh (ODR) random access point (RAP) for a movie segmentation of a movie representation. At least one frame of the media segmentation following the ODR RAP frame in decoding order may not be correctly decoded, and wherein each frame of the media segmentation following the ODR RAP frame in display order can be correctly decoded without relying on content of frames prior to the ODR RAP in display order. According to the techniques of this disclosure, a client device may communicate a request to a server device for the streaming of media data based on signaling of the ODR RAP. Also according to the techniques of this disclosure, a client device may commence decoding and/or playback of the movie representation based on signaling of the ODR RAP.
摘要翻译: 本公开描述了与媒体数据的HTTP流相关的技术。 根据这些技术,服务器设备可以发送用于电影表示的电影分割的开放解码刷新(ODR)随机接入点(RAP)。 按照解码顺序在ODR RAP帧之后的媒体分段的至少一帧可能不能被正确解码,并且其中以显示顺序在ODR RAP帧之后的媒体分段的每个帧可以被正确地解码,而不依赖于之前的帧的内容 ODR RAP显示顺序。 根据本公开的技术,客户端设备可以基于ODR RAP的信令来向服务器设备传送媒体流媒体数据的请求。 还根据本公开的技术,客户端设备可以基于ODR RAP的信令开始解码和/或播放电影表示。
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