公开(公告)号：US06738423B1

公开(公告)日：2004-05-18

申请号：US09489543

申请日：2000-01-21

申请人： Jani Lainema ,  Marta Karczewicz

发明人： Jani Lainema ,  Marta Karczewicz

IPC分类号： H04N712

CPC分类号： H04N19/198 ,  H04N19/105 ,  H04N19/126 ,  H04N19/154 ,  H04N19/172 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/51 ,  H04N19/517 ,  H04N19/52 ,  H04N19/527 ,  H04N19/537 ,  H04N19/61

摘要： A motion compensated video coding method which can be applied especially in transfer of video streams using low transmission bit rate is presented. In the motion compensated coding method, the motion of picture elements between a piece of reference video information and a piece of current video information is estimated and then modeled using certain basis function and coefficients. The coefficients are quantized, and the quantizer is selected according to a certain selection criterion, for example, based on a target image quality or on a target transmission bit rate. Preferably the selection criterion is such that it automatically adjust the accuracy with which the motion of picture elements is represented to be related to the accuracy with which the prediction error information is represented. A decoding method, an encoder and a corresponding decoder are also described.

摘要翻译： 提出了一种运动补偿视频编码方法，其特别适用于使用低传输比特率的视频流的传输。 在运动补偿编码方法中，估计一条参考视频信息和一条当前视频信息之间的图像元素的运动，然后使用某些基函数和系数进行建模。 量化系数，并且根据某一选择标准（例如，基于目标图像质量或目标传输比特率）来选择量化器。 优选地，选择标准使得其自动调整图像元素的运动被表示为与表示预测误差信息的准确度相关的精度。 还描述了解码方法，编码器和对应的解码器。

公开(公告)号：US09900619B2

公开(公告)日：2018-02-20

申请号：US14409785

申请日：2012-07-09

申请人： Ying Chen ,  Xin Zhao ,  Li Zhang ,  Marta Karczewicz

发明人： Ying Chen ,  Xin Zhao ,  Li Zhang ,  Marta Karczewicz

IPC分类号： H04N19/597 ,  H04N19/105 ,  H04N19/159 ,  H04N19/196 ,  H04N19/176 ,  H04N19/107

CPC分类号： H04N19/597 ,  H04N19/105 ,  H04N19/107 ,  H04N19/159 ,  H04N19/176

摘要： In one example, a device for coding video data includes a video coder configured to determine, for a depth block of a depth component of video data, a co-located texture block of a corresponding texture component, and when at least a portion of the texture block corresponds to a prediction unit of the texture component that is not intra-prediction coded: disable an inter-component Wedgelet depth modeling mode for the depth block, select an intra-prediction coding mode for the depth block other than the disabled inter-component Wedgelet depth modeling mode, and code the depth block using the selected intra-prediction coding mode.

公开(公告)号：US09848197B2

公开(公告)日：2017-12-19

申请号：US13414232

申请日：2012-03-07

申请人： Ying Chen ,  Liwei Guo ,  Peisong Chen ,  Xianglin Wang ,  Marta Karczewicz

发明人： Ying Chen ,  Liwei Guo ,  Peisong Chen ,  Xianglin Wang ,  Marta Karczewicz

IPC分类号： H04N19/122 ,  H04N19/186 ,  H04N19/176 ,  H04N19/96

CPC分类号： H04N19/186 ,  H04N19/122 ,  H04N19/176 ,  H04N19/96

摘要： Aspects of this disclosure relate to a method of coding video data. In an example, the method includes determining a first residual quadtree (RQT) depth at which to apply a first transform to luma information associated with a block of video data, wherein the RQT represents a manner in which transforms are applied to luma information and chroma information. The method also includes determining a second RQT depth at which to apply a second transform to the chroma information associated with the block of video data, wherein the second RQT depth is different than the first RQT depth. The method also includes coding the luma information at the first RQT depth and the chroma information at the second RQT depth.

公开(公告)号：US09800891B2

公开(公告)日：2017-10-24

申请号：US09766035

申请日：2001-01-19

申请人： Ossi Kalevo ,  Emre Aksu ,  Marta Karczewicz

发明人： Ossi Kalevo ,  Emre Aksu ,  Marta Karczewicz

IPC分类号： H04N7/12 ,  H04N19/527 ,  H04N19/86

CPC分类号： H04N19/527 ,  H04N19/86

摘要： A method for reducing visual artifacts in a frame of a digital video signal, which is coded by blocks and then decoded, includes defining a block type is according to the coding method for a block selected according to a predetermined set of coding types. In the method filtering is performed to reduce visual artifacts due to a block boundary The filtering performed depends on block types of the frame in the environment of the block boundary.

公开(公告)号：US09716920B2

公开(公告)日：2017-07-25

申请号：US13154247

申请日：2011-06-06

申请人： Ying Chen ,  Peisong Chen ,  Marta Karczewicz

发明人： Ying Chen ,  Peisong Chen ,  Marta Karczewicz

IPC分类号： H04N13/00 ,  H04N21/81 ,  H04N21/218 ,  H04N21/235 ,  H04N21/2365 ,  H04N21/435 ,  H04N21/61 ,  H04N21/658 ,  H04N21/84 ,  H04N19/597 ,  H04N19/70

CPC分类号： H04N21/816 ,  H04N19/597 ,  H04N19/70 ,  H04N21/21805 ,  H04N21/235 ,  H04N21/2365 ,  H04N21/435 ,  H04N21/6125 ,  H04N21/6581 ,  H04N21/84

摘要： In one example, an apparatus includes a processor configured to receive video data for two or more views of a scene, determine horizontal locations of camera perspectives for each of the two or more views, assign view identifiers to the two or more views such that the view identifiers correspond to the relative horizontal locations of the camera perspectives, form a representation comprising a subset of the two or more views, and, in response to a request from a client device, send information indicative of a maximum view identifier and a minimum view identifier for the representation to the client device.

公开(公告)号：US09596447B2

公开(公告)日：2017-03-14

申请号：US13082051

申请日：2011-04-07

申请人： Ying Chen ,  Marta Karczewicz ,  Yong Wang

发明人： Ying Chen ,  Marta Karczewicz ,  Yong Wang

IPC分类号： H04N7/12 ,  H04N13/00 ,  H04N21/81 ,  H04N21/84 ,  H04N21/845 ,  H04N21/854 ,  H04N19/597 ,  H04N19/70 ,  H04N19/61

CPC分类号： H04N13/161 ,  H04N19/597 ,  H04N19/61 ,  H04N19/70 ,  H04N21/816 ,  H04N21/84 ,  H04N21/8456 ,  H04N21/85406

摘要： This disclosure includes techniques for signaling characteristics of a representation of multimedia content at a representation layer, such as frame packing arrangement information for the representation. In one example, an apparatus for receiving video data includes a processing unit configured to receive information indicative of whether a bitstream includes a packed frame of video data, wherein the packed frame comprises two frames corresponding to different views of a scene for three-dimensional playback, and wherein the information is present in a representation layer external to a codec layer of the bitstream, automatically determine whether the apparatus is capable of decoding and rendering the bitstream based on an analysis of the received information and decoding and rendering capabilities of the device, and retrieve the bitstream when the processing unit determines that the device is capable of decoding and rendering the bitstream.

摘要翻译： 该公开内容包括用于在表示层上用于表示多媒体内容的表示的特征的技术，例如用于表示的帧包装布置信息。 在一个示例中，用于接收视频数据的设备包括：处理单元，被配置为接收指示比特流是否包括视频数据的打包帧的信息，其中所述打包帧包括对应于用于三维回放的场景的不同视图的两个帧 ，并且其中所述信息存在于所述比特流的编解码器层外部的表示层中，基于所接收的信息的分析和所述设备的解码和呈现能力自动地确定所述设备是否能够对所述比特流进行解码和呈现， 以及当所述处理单元确定所述设备能够对所述比特流进行解码和呈现时，检索所述比特流。

公开(公告)号：US09491469B2

公开(公告)日：2016-11-08

申请号：US13534332

申请日：2012-06-27

申请人： Joel Sole Rojals ,  Wei-Jung Chien ,  Rajan Laxman Joshi ,  Marta Karczewicz

发明人： Joel Sole Rojals ,  Wei-Jung Chien ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC分类号： H04N7/30 ,  H04N7/32 ,  H03M7/00 ,  H04N19/13 ,  H04N19/196 ,  H04N19/129 ,  H04N19/463 ,  H04N19/91 ,  H04N19/44

CPC分类号： H04N19/13 ,  H04N19/129 ,  H04N19/196 ,  H04N19/44 ,  H04N19/463 ,  H04N19/91

摘要： A video encoder determines that the last significant coefficient (LSC) of a transform coefficient block occurs at a given ordinal position according to a coding scanning order. The video encoder generates a coordinate indicator that specifies the coordinates of a given transform coefficient in the transform coefficient block. The given transform coefficient occurs at the same ordinal position according to an assumed scanning order. A video decoder receives the coordinate indicator and converts the coordinate indicator into a scan-based LSC indicator. The scan-based LSC indicator indicates the ordinal position of the LSC.

摘要翻译： 视频编码器根据编码扫描顺序确定变换系数块的最后有效系数（LSC）发生在给定的顺序位置处。 视频编码器生成指定变换系数块中的给定变换系数的坐标的坐标指示符。 给定的变换系数根据假定的扫描顺序发生在相同的序数位置。 视频解码器接收坐标指示符并将坐标指示符转换为基于扫描的LSC指示符。 基于扫描的LSC指示符表示LSC的顺序位置。

公开(公告)号：US09462298B2

公开(公告)日：2016-10-04

申请号：US13598375

申请日：2012-08-29

申请人： In Suk Chong ,  Xianglin Wang ,  Marta Karczewicz

发明人： In Suk Chong ,  Xianglin Wang ,  Marta Karczewicz

IPC分类号： H04N7/26 ,  H04N19/82

CPC分类号： H04N19/82 ,  H04N19/117 ,  H04N19/167 ,  H04N19/182 ,  H04N19/86

摘要： The techniques of this disclosure apply to loop filtering across slice or tile boundaries in a video coding process. In one example, a method for performing loop filtering in a video coding process includes determining that pixels corresponding to filter coefficients of a filter mask for a loop filter are across a slice or tile boundary, removing filter coefficients corresponding to the pixels across the slice or tile boundary from the filter mask, renormalizing the filter mask without the removed filter coefficients, performing loop filtering using the renormalized filter mask.

摘要翻译： 本公开的技术适用于跨视频编码过程中的片或片边界的环路滤波。 在一个示例中，用于在视频编码处理中执行环路滤波的方法包括：确定与环路滤波器的滤波器滤波器的滤波器系数相对应的像素跨越切片或平铺边界，去除对应于跨越切片的像素的滤波器系数; 来自滤波器掩码的瓦片边界，对没有去除的滤波器系数的滤波器掩码进行重新规范化，使用重新归一化的滤波器掩码执行环路滤波。

公开(公告)号：US09392301B2

公开(公告)日：2016-07-12

申请号：US13536834

申请日：2012-06-28

申请人： Joel Sole Rojals ,  Rajan Laxman Joshi ,  Marta Karczewicz

发明人： Joel Sole Rojals ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC分类号： H04N7/26 ,  H04N19/625 ,  H04N19/176 ,  H04N19/13 ,  H04N19/129 ,  H04N19/91 ,  H04N19/18 ,  H04N19/93

CPC分类号： H04N19/60 ,  H04N19/129 ,  H04N19/13 ,  H04N19/176 ,  H04N19/18 ,  H04N19/45 ,  H04N19/625 ,  H04N19/91 ,  H04N19/93 ,  H04W88/02

摘要： Disclosed are techniques for coding coefficients of a video block having a non-square shape defined by a width and a height, comprising coding one or more of x- and y-coordinates that indicate a position of a last non-zero coefficient within the block according to an associated scanning order, including coding each coordinate by determining one or more contexts used to code the coordinate based on one of the width and the height that corresponds to the coordinate, and coding the coordinate by performing a context adaptive entropy coding process based on the contexts. Also disclosed are techniques for coding information that identifies positions of non-zero coefficients within the block, including determining one or more contexts used to code the information based on one or more of the width and the height, and coding the information by performing a context adaptive entropy coding process based on the contexts.

摘要翻译： 公开了用于对具有由宽度和高度限定的非正方形形状的视频块的系数进行编码的技术，包括编码表示块内最后非零系数的位置的x坐标和y坐标中的一个或多个 根据相关联的扫描顺序，包括通过基于与坐标相对应的宽度和高度中的一个确定用于对坐标进行编码的一个或多个上下文来对每个坐标进行编码，并且通过执行基于上下文自适应熵编码处理来对该坐标进行编码 在上下文中。 还公开了用于编码识别块内的非零系数的位置的信息的技术，包括基于宽度和高度中的一个或多个来确定用于对信息进行编码的一个或多个上下文，以及通过执行上下文对信息进行编码 基于上下文的自适应熵编码过程。

公开(公告)号：US09338476B2

公开(公告)日：2016-05-10

申请号：US13466831

申请日：2012-05-08

申请人： Geert Van der Auwera ,  Marta Karczewicz

发明人： Geert Van der Auwera ,  Marta Karczewicz

IPC分类号： H04N7/12 ,  H04N19/82 ,  H04N19/159 ,  H04N19/176 ,  H04N19/117

CPC分类号： H04N19/82 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176

摘要： In one example, an apparatus for coding video data includes a video coder configured to determine a first prediction mode for a first block of video data and a second prediction mode for a second block of video data, wherein the first block and the second block share a common edge, decode the first block using the first prediction mode and the second block using the second prediction mode, and determine whether to deblock the common edge between the first block and the second block based at least in part on whether at least one of the first prediction mode and the second prediction mode comprises short distance intra-prediction (SDIP).

摘要翻译： 在一个示例中，用于编码视频数据的装置包括视频编码器，被配置为确定第一视频数据块的第一预测模式和用于第二视频数据块的第二预测模式，其中第一块和第二块共享 公共边缘，使用第一预测模式对第一块进行解码，并且使用第二预测模式对第二块进行解码，并且至少部分地基于是否至少部分地基于第一块和第二块之间的至少一个来确定是否去除第一块和第二块之间的公共边缘 第一预测模式和第二预测模式包括短距离帧内预测（SDIP）。