公开(公告)号：US20160352791A1

公开(公告)日：2016-12-01

申请号：US15167134

申请日：2016-05-27

Applicant: Google Inc.

Inventor： Riley Adams ,  Christian Luc Duvivier ,  Andrew Scherkus ,  Rob Suderman ,  Jeff Prouty ,  Dillon Richard Cower

IPC: H04L29/06 ,  H04N21/8547 ,  H04N21/2662 ,  H04N21/2387

CPC classification number: H04L65/4069 ,  H04L65/604 ,  H04N21/21805 ,  H04N21/816 ,  H04N21/8547

Abstract: A method includes receiving a first video stream at a playback device, the first video stream having a first quality, receiving at least two second video streams at the playback device, the at least two second video streams each corresponding to a portion of the first video stream, the at least two second video streams having a second quality, the second quality being a higher quality as compared to the first quality, playing back the first video stream at the playback device, selecting a third video stream from the at least two second video streams based on a view perspective of a user of the playback device, and playing back the third video stream together with the first video stream at the playback device.

Abstract translation: 一种方法包括在回放设备处接收第一视频流，第一视频流具有第一质量，在回放设备处接收至少两个第二视频流，所述至少两个第二视频流分别对应于第一视频的一部分 流，所述至少两个第二视频流具有第二质量，所述第二质量与所述第一质量相比更高质量，在所述播放设备处回放所述第一视频流，从所述至少两秒中选择第三视频流 基于播放设备的用户的视角透视的视频流，以及在播放设备处与第一视频流一起播放第三视频流。

公开(公告)号：US09392288B2

公开(公告)日：2016-07-12

申请号：US14056331

申请日：2013-10-17

Applicant: Google Inc.

Inventor： Ronald Sebastiaan Bultje ,  Christian Luc Duvivier

IPC: H04N7/12 ,  H04N19/136 ,  H04N19/61 ,  H04N19/40 ,  H04N21/43 ,  H04N19/129 ,  H04N19/60 ,  H04N19/176

CPC classification number: H04N19/136 ,  H04N19/129 ,  H04N19/176 ,  H04N19/40 ,  H04N19/60 ,  H04N19/61 ,  H04N21/4305

Abstract: Scatter-based scan tables are used to encode and decode video streams. Scatter scan patterns transform coefficients between positions within a 2D array representing a block of a frame and positions within a 1D array for further encoding. By calculating a probability of whether a transform coefficient at a given position in a 2D array is non-zero, a scan order of the 2D array may be defined by a 1D array that groups the values most likely to be zero at the end of the 1D array for removal from a subsequent encoding process. This can reduce the amount of data in an encoded video stream. A decoder can use the same scatter scan pattern to rearrange a sequence of encoded transform coefficients in a 1D array into a 2D array for further decoding of an encoded block.

Abstract translation: 基于散射的扫描表用于对视频流进行编码和解码。 散射扫描图案在表示帧的块和2D阵列内的位置之间的位置之间变换系数，用于进一步的编码。 通过计算2D阵列中的给定位置处的变换系数是否为非零的概率，2D阵列的扫描顺序可以由1D阵列定义，该1D阵列将在最后可能为零的值分组 1D数组，用于从后续编码过程中删除。 这可以减少编码视频流中的数据量。 解码器可以使用相同的散射扫描图案将1D阵列中的编码变换系数序列重新排列成2D阵列，以进一步解码编码块。

公开(公告)号：US20150110173A1

公开(公告)日：2015-04-23

申请号：US14056331

申请日：2013-10-17

Applicant: Google Inc.

Inventor： Ronald Sebastiaan Bultje ,  Christian Luc Duvivier

IPC: H04N19/122 ,  H04N19/136 ,  H04N19/18 ,  H04N19/60 ,  H04N19/12

CPC classification number: H04N19/136 ,  H04N19/129 ,  H04N19/176 ,  H04N19/40 ,  H04N19/60 ,  H04N19/61 ,  H04N21/4305

Abstract: Scatter-based scan tables are used to encode and decode video streams. Scatter scan patterns transform coefficients between positions within a 2D array representing a block of a frame and positions within a 1D array for further encoding. By calculating a probability of whether a transform coefficient at a given position in a 2D array is non-zero, a scan order of the 2D array may be defined by a 1D array that groups the values most likely to be zero at the end of the 1D array for removal from a subsequent encoding process. This can reduce the amount of data in an encoded video stream. A decoder can use the same scatter scan pattern to rearrange a sequence of encoded transform coefficients in a 1D array into a 2D array for further decoding of an encoded block.

Abstract translation: 基于散射的扫描表用于对视频流进行编码和解码。 散射扫描图案在表示帧的块和2D阵列内的位置之间的位置之间变换系数，用于进一步的编码。 通过计算2D阵列中的给定位置处的变换系数是否为非零的概率，2D阵列的扫描顺序可以由1D阵列定义，其将最可能为零的值分组 1D数组，用于从后续编码过程中删除。 这可以减少编码视频流中的数据量。 解码器可以使用相同的散射扫描图案将1D阵列中的编码变换系数序列重新排列成2D阵列，以进一步解码编码块。