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    MEDIA CONTAINER FILE MANAGEMENT
    1.
    发明公开
    MEDIA CONTAINER FILE MANAGEMENT 有权
    媒体容器文件管理

    公开(公告)号：EP2417772A4

    公开(公告)日：2012-08-29

    申请号：EP09843130

    申请日：2009-11-06

    Applicant: ERICSSON TELEFON AB L M

    Inventor： PRIDDLE CLINTON ,  FROEJDH PER ,  NORKIN ANDREY

    IPC: H04N7/50 ,  H04N7/26

    CPC classification number: H04N5/91 ,  G11B27/30 ,  H04N9/7921 ,  H04N9/8042 ,  H04N9/8205 ,  H04N9/8227 ,  H04N13/0048 ,  H04N19/597 ,  H04N21/433 ,  H04N21/4332

    Abstract: A media container file (1) is generated by organizing media data (2; 3) defined by a media track (12) in the file (1). Sub-track information (72, 74) identifying media data portions (4, 5; 6, 7, 8) of the media data (2; 3) is organized for each sub-track of multiple sub-tracks defined in the media track (12). At least one of the sub-tracks is assigned selection information (62, 64) defining a selective processing of the media data portion (4, 5; 6, 7, 8) defined by the sub-track in relation to other media data organized in the media container file (1). The media data (2, 3) advantageously relate to layered media or media defining multiple camera views which are organized into sub-tracks (12). The selection information (62, 64) allows selection among tracks (12) and sub-tracks when setting up a media session and switching between tracks (12) and sub-tracks during such a media session.

    Abstract translation: 通过组织由文件（1）中的媒体轨道（12）定义的媒体数据（2; 3）来生成媒体容器文件（1）。 识别媒体数据（2; 3）的媒体数据部分（4,5,6,7,8）的子轨道信息（72,74）被组织用于媒体轨道中定义的多个子轨道的每个子轨道 （12）。 所述子轨道中的至少一个被分配选择信息（62,64），所述选择信息定义由所述子轨道定义的媒体数据部分（4,5,6,7,8）相对于组织的其他媒体数据的选择性处理 在媒体容器文件（1）中。 媒体数据（2,3）有利地涉及定义多个相机视图的分层媒体或媒体，其被组织成子轨道（12）。 选择信息（62,64）允许在建立媒体会话期间在轨道（12）和子轨道之间进行选择，并且在这样的媒体会话期间在轨道（12）和子轨道之间切换。

    GLOBAL MOTION COMPENSATION FOR VIDEO PICTURES
    8.
    发明申请
    GLOBAL MOTION COMPENSATION FOR VIDEO PICTURES 审中-公开
    视频图片的全球运动补偿

    公开(公告)号：WO03047268A2

    公开(公告)日：2003-06-05

    申请号：PCT/SE0202206

    申请日：2002-11-29

    Applicant: ERICSSON TELEFON AB L M

    Inventor： SJOEBERG RICKARD ,  EINARSSON TORBJOERN ,  FROEJDH PER

    IPC: H04N19/527 ,  H04N1/00 ,  H04N7/26

    CPC classification number: H04N19/174 ,  H04N19/46 ,  H04N19/527 ,  H04N19/70

    Abstract: A system and a method for coding and decoding video data are invented. In a system and method of video data compression a video frame (32) is divided into a sequence of image blocks (38), wherein one of several possible block-coding modes is an implicit global motion compensation (IGMC) mode, which is used to copy pixels from a previous frame (32) displaced by a predicted motion vector. In another embodiment of the invention, a system and method of a video data compression, a video frame (32) is segmented into a sequence of slices (36), wherein each slice (36) includes a number of macroblocks (38). Respective slices (36) are encoded and a signal is included in the header (44) of an encoded slice (40) to indicate whether the slice (40) is GMC enabled, that is, whether global motion compensation is to be used in reconstructing the encoded slice. If so, GMC information, such as information representing a set of motion vectors (42a-42d), is included with the slice. In a useful embodiment each slice (36) of a frame (32) contains the same GMC information, to enhance resiliency against errors. In another embodiment different slices (36) of a frame (32) contain different GMC information. In either embodiment, motion vectors (42a-42d) for each image of a particular encoded slice (40) can be reconstructed using GMC information contained only in the particular encoded slice.

    Abstract translation: 发明了一种用于编码和解码视频数据的系统和方法。 在视频数据压缩的系统和方法中，视频帧（32）被分成一系列图像块（38），其中几个可能的块编码模式之一是隐式全局运动补偿（IGMC）模式，其被使用 从先前帧（32）中复制由预测运动矢量位移的像素。 在本发明的另一个实施例中，一种视频数据压缩系统和方法，视频帧（32）被分割成片段（36）序列，其中每个片段（36）包括多个宏块（38）。 对各个片（36）进行编码，并且将信号包括在编码片（40）的头部（44）中以指示片（40）是否启用GMC，即是否要在重建中使用全局运动补偿 编码的片。 如果是这样，则代表片段中包括表示一组运动矢量（42a-42d）的信息等GMC信息。 在有用的实施例中，帧（32）的每个片（36）包含相同的GMC信息，以增强针对错误的弹性。 在另一个实施例中，帧（32）的不同切片（36）包含不同的GMC信息。 在任一实施例中，可以使用仅包含在特定编码切片中的GMC信息来重建特定编码切片（40）的每个图像的运动矢量（42a-42d）。

    RUN-LENGTH CODING OF NON-CODED MACROBLOCKS
    9.
    发明申请
    RUN-LENGTH CODING OF NON-CODED MACROBLOCKS 审中-公开
    非编码宏块的运行长度编码

    公开(公告)号：WO02076104A3

    公开(公告)日：2002-12-19

    申请号：PCT/SE0200553

    申请日：2002-03-20

    Applicant: ERICSSON TELEFON AB L M

    Inventor： FROEJDH PER ,  EINARSSON TORBJOERN ,  SJOEBERG RICKARD

    IPC: G06T9/00 ,  H03M7/46 ,  H04N7/26 ,  H04N7/50 ,  H04N7/32

    CPC classification number: H04N19/132 ,  H04N19/107 ,  H04N19/176 ,  H04N19/61 ,  H04N19/70

    Abstract: A method of video data compression is provided which is comparatively efficient in compressing data, and at the same time enables transmission of compressed data with sufficient robustness to withstand losses in the transmission channel. A frame of data is divided into coded macroblocks and skipped macroblocks which are grouped into respective slices in a sequence of slices. Respective slices are allowed to contain arbitrary numbers of consecutive macroblocks, and can begin and end at arbitrary positions within the frame. A run-length codeword, comprising a small number of bits, is inserted at the end of a slice to indicate the total number of skipped macroblocks between the final coded macroblock and the end of the slice. To further enhance error resilience an additional codeword, which also indicates the total number of skipped macroblocks, may be inserted at the beginning of the next-following slice.

    Abstract translation: 提供一种在压缩数据方面相对高效的视频数据压缩方法，并且同时能够以足够的鲁棒性传输压缩数据以承受传输信道中的损失。 数据帧被分成编码宏块和跳过宏块，这些宏块被分组成片段序列中的相应片段。 允许各个切片包含任意数量的连续宏块，并且可以在帧内的任意位置开始和结束。 包括少量比特的游程长度码字被插入到一个切片的末端，以指示最终编码宏块和切片结束之间的跳过宏块的总数。 为了进一步增强错误恢复能力，可以在下一个接下来的片段的开始处插入附加码字，其也指示跳过的宏块的总数。

    AUXILIARY INFORMATION MAP UPSAMPLING
    10.
    发明申请
    AUXILIARY INFORMATION MAP UPSAMPLING 审中-公开
    辅助信息地图UPSAMPLING

    公开(公告)号：WO2013025157A3

    公开(公告)日：2013-04-25

    申请号：PCT/SE2012050746

    申请日：2012-06-29

    Applicant: ERICSSON TELEFON AB L M ,  GIRDZIJAUSKAS IVANA ,  FROEJDH PER ,  RUSERT THOMAS

    Inventor： GIRDZIJAUSKAS IVANA ,  FROEJDH PER ,  RUSERT THOMAS

    IPC: H04N13/00

    CPC classification number: H04N19/46 ,  H04N13/0018 ,  H04N13/0022 ,  H04N19/00545 ,  H04N19/51 ,  H04N19/597 ,  H04N2213/003

    Abstract: An auxiliary information map (10) is upsampled to form an upsampled auxiliary information map (20). Multiple reference pixels (23) in the upsampled auxiliary information map (20) are selected for a current pixel (21) in the upsampled auxiliary information map (20) based on texel values of texels in an associated texture (30). An updated pixel value is calculated for the current pixel (21) based on the pixel values of the selected reference pixels (23).

    Abstract translation: 辅助信息图（10）被上采样以形成上采样辅助信息图（20）。 基于上位采样的辅助信息图（20）中的上采样辅助信息图（20）中的多个参考像素（23）针对上采样辅助信息图（20）中的当前像素（21），基于相关纹理（30）中的纹素的纹理值来选择。 基于所选择的参考像素（23）的像素值，针对当前像素（21）计算更新的像素值。

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