公开(公告)号：US09894381B1

公开(公告)日：2018-02-13

申请号：US15218229

申请日：2016-07-25

Applicant: GOOGLE INC.

Inventor： Qunshan Gu ,  Marco Paniconi

IPC: H04N11/02 ,  H04N19/573 ,  H04N19/52 ,  H04L29/06 ,  H04N21/234 ,  H04N21/44 ,  H04N21/845

CPC classification number: H04N19/573 ,  H04L65/607 ,  H04N19/00 ,  H04N19/52 ,  H04N21/234 ,  H04N21/23406 ,  H04N21/44004 ,  H04N21/8451

Abstract: Encoding and decoding is accomplished herein using a multi-reference picture buffer. Decoding includes receiving an encoded video stream, determining an expected error value representing possible frame errors, decoding a plurality of reference frames from the video stream, adding each of the plurality of reference frames to the reference picture buffers up to a maximum number of reference picture buffers, and determining an encoded video stream error value representing actual frame errors based on the decoded plurality of reference frames. If the encoded video stream error value is greater than the decoded expected error value, an error is signaled.

公开(公告)号：US20170280142A1

公开(公告)日：2017-09-28

申请号：US15618517

申请日：2017-06-09

Applicant: GOOGLE INC.

Inventor： Marco Paniconi ,  Qunshan Gu

IPC: H04N19/17 ,  H04N19/169 ,  H04N19/44 ,  H04N19/593

Abstract: Object-based intra-prediction encoding may include generating, by a processor in response to instructions stored on a non-transitory computer readable medium, an encoded block of a current frame of a video stream by encoding a current block from the current frame, including the encoded block in an output bitstream, and outputting or storing the output bitstream. Encoding the current block may include identifying a first spatial portion of the current block, wherein the first spatial portion includes a first pixel from the current block and omits a second pixel from the current block, encoding the first pixel using a first intra-prediction mode, and encoding the second pixel using a second intra-prediction mode, wherein the second intra-prediction mode differs from the first intra-prediction mode.

公开(公告)号：US09426459B2

公开(公告)日：2016-08-23

申请号：US13865242

申请日：2013-04-18

Applicant: Google Inc.

Inventor： Qunshan Gu ,  Marco Paniconi

IPC: H04N19/00 ,  H04N21/234 ,  H04N21/44 ,  H04N21/845

CPC classification number: H04N19/573 ,  H04L65/607 ,  H04N19/00 ,  H04N19/52 ,  H04N21/234 ,  H04N21/23406 ,  H04N21/44004 ,  H04N21/8451

Abstract: Encoding and decoding is accomplished herein using a multi-reference picture buffer. Reference frames are assigned to reference picture buffers when used for encoding and are identified with picture IDs unique relative to other picture IDs currently associated with the reference picture buffers. The maximum picture number used as the picture ID can be based on a number of reference picture buffers available to encode and decode the frames plus a value based on an expected error rate. The picture IDs can be assigned based on a least recently used policy. When a reference frame is no longer needed for encoding and decoding, a picture ID number associated with the reference frame can be released for re-assignment to a new reference frame.

Abstract translation: 这里使用多参考图像缓冲器来完成编码和解码。 当用于编码时，参考帧被分配给参考图像缓冲器，并且被识别为与当前与参考图像缓冲器相关联的其它图像ID相对于唯一的图像ID。 用作图像ID的最大图像编号可以基于可用于编码和解码帧的参考图像缓冲器的数量加上基于预期误码率的值。 可以基于最近最少使用的策略来分配图片ID。 当编码和解码不再需要参考帧时，可以释放与参考帧相关联的图像ID号，以重新分配给新的参考帧。

公开(公告)号：US09369732B2

公开(公告)日：2016-06-14

申请号：US13647089

申请日：2012-10-08

Applicant: Google Inc.

Inventor： Qunshan Gu ,  Yaowu Xu

IPC: H04N7/32 ,  H04N19/593

CPC classification number: H04N19/593

Abstract: Blocks of a frame of a video stream can be encoded using lossless intra-prediction encoding. The compression ratio of lossless intra-prediction encoding can be improved by performing lossy encoding on the intra-predicted residual. The encoded residual is then decoded and the reconstructed residual is subtracted from the original residual. The resulting difference residual is encoded using lossless encoding and included in the output bitstream along with the lossy encoded residual, permitting the block to be decoded with no loss at a decoder.

Abstract translation: 可以使用无损内部预测编码对视频流的帧的块进行编码。 可以通过对帧内预测残差进行有损编码来提高无损帧内预测编码的压缩比。 然后对编码的残差进行解码，并从原始残差中减去重建的残差。 所得到的差分残差使用无损编码进行编码，并包含在输出比特流中以及有损编码残差，允许在解码器处无损耗地对该块进行解码。

公开(公告)号：US09264707B2

公开(公告)日：2016-02-16

申请号：US13758342

申请日：2013-02-04

Applicant: Google Inc.

Inventor： Qunshan Gu ,  Wei Jia

IPC: H04N19/13

CPC classification number: H04N19/13 ,  H03M7/46 ,  H04N19/50 ,  H04N19/93

Abstract: A method includes performing, by a microprocessor of a computing device, a coding to obtain a residual of a residual data block from an original data block. The method includes pre-defining a default order of symbols in the residual data block. The method includes re-ordering the symbols in the residual data block in an order other than the default order, such that a first set of most frequently used symbols are in a first location and a second set of least frequently used symbols are in a second location, producing a multi-symbol run-length code based on a group of symbols from the first set of most frequently used symbols, and detecting the second set of least frequently used symbols based on the multi-symbol run-length code.

Abstract translation: 一种方法包括由计算设备的微处理器执行编码以从原始数据块获得残余数据块的残差。 该方法包括在残差数据块中预先定义符号的默认顺序。 该方法包括以除默认顺序之外的顺序重新排序残留数据块中的符号，使得第一组最常用的符号位于第一位置，而第二组最不频繁使用的符号位于第二位置 位置，基于来自第一组最常用符号的一组符号产生多符号游程长度代码，以及基于多符号游程长度代码检测第二组最不频繁使用的符号。

公开(公告)号：US20150205447A1

公开(公告)日：2015-07-23

申请号：US13649074

申请日：2012-10-10

Applicant: Google Inc.

Inventor： Wei JIA ,  Qunshan Gu

IPC: G06F3/0481 ,  G06F3/0484

CPC classification number: G06F3/0481 ,  G06F3/04847 ,  G06F3/0487 ,  G06F3/1454 ,  G06F9/452 ,  G09G5/14 ,  G09G2340/0407 ,  G09G2340/145

Abstract: The subject disclosure relates to managing windows in communications between a client device and a host device. It includes obtaining display information for a host device in response to a communication request from a client device, determining, based on the display information for the host device, a primary window to provide for display at the client device and identifying content associated with the primary window. The disclosure further includes determining display specifications of the client device, wherein the display specifications comprise at least one of display size, display type or content download settings and providing the identified content associated with the primary window for display on the client device according to the display specifications of the client device.

Abstract translation: 本公开涉及在客户端设备和主机设备之间的通信中管理窗口。 它包括响应于来自客户端设备的通信请求而获得主机设备的显示信息，基于主机设备的显示信息确定提供在客户端设备处显示的主窗口，并且识别与主服务器相关联的内容 窗口。 本公开还包括确定客户端设备的显示规格，其中显示规格包括显示器尺寸，显示类型或内容下载设置中的至少一个，并且根据显示器提供与主窗口相关联的所标识的内容以在客户端设备上显示 客户端设备的规格。