公开(公告)号：US09979960B2

公开(公告)日：2018-05-22

申请号：US14027013

申请日：2013-09-13

Applicant: Microsoft Corporation

Inventor： Lihua Zhu ,  Sridhar Sankuratri ,  B. Anil Kumar ,  Yongjun Wu ,  Sandeep Kanumuri ,  Shyam Sadhwani ,  Gary J. Sullivan

IPC: H04N19/186 ,  H04N19/30 ,  H04N19/59 ,  H04N19/70 ,  H04N19/80 ,  H04N19/88 ,  H04N1/64 ,  H04N9/64 ,  H04N21/2343 ,  H04N19/33

CPC classification number: H04N19/182 ,  H04N1/646 ,  H04N9/64 ,  H04N19/186 ,  H04N19/30 ,  H04N19/59 ,  H04N19/70 ,  H04N19/80 ,  H04N19/88 ,  H04N21/234327 ,  H04N21/234363

Abstract: Video frames of a higher-resolution chroma sampling format such as YUV 4:4:4 are packed into video frames of a lower-resolution chroma sampling format such as YUV 4:2:0 for purposes of video encoding. For example, sample values for a frame in YUV 4:4:4 format are packed into two frames in YUV 4:2:0 format. After decoding, the video frames of the lower-resolution chroma sampling format can be unpacked to reconstruct the video frames of the higher-resolution chroma sampling format. In this way, available encoders and decoders operating at the lower-resolution chroma sampling format can be used, while still retaining higher resolution chroma information. In example implementations, frames in YUV 4:4:4 format are packed into frames in YUV 4:2:0 format such that geometric correspondence is maintained between Y, U and V components for the frames in YUV 4:2:0 format.

公开(公告)号：US20140192261A1

公开(公告)日：2014-07-10

申请号：US13736688

申请日：2013-01-08

Applicant: MICROSOFT CORPORATION

Inventor： Lihua Zhu ,  Sridhar Sankuratri ,  B. Anil Kumar ,  Nadim Abdo

IPC: H04N9/64

CPC classification number: H04N9/64 ,  H04N19/186 ,  H04N19/85 ,  H04N19/88

Abstract: Converting a first format frame to one or more second format frames. In one embodiment, a method includes accessing a first format frame using n coefficients, where n is the total number of coefficients used for the Y, U and V planes of the first format frame. The method further includes mapping the coefficients of the first format frame to coefficients of one or more second format frames. The one or more second format frames have n coefficients across all of the second format frames matching the n coefficients of the first format frame.

Abstract translation: 将第一格式帧转换为一个或多个第二格式帧。 在一个实施例中，一种方法包括使用n个系数访问第一格式帧，其中n是用于第一格式帧的Y，U和V平面的系数的总数。 该方法还包括将第一格式帧的系数映射到一个或多个第二格式帧的系数。 一个或多个第二格式帧在与第一格式帧的n个系数匹配的所有第二格式帧中具有n个系数。

公开(公告)号：US09661341B2

公开(公告)日：2017-05-23

申请号：US14109670

申请日：2013-12-17

Applicant: Microsoft Corporation

Inventor： Gary J. Sullivan ,  Lihua Zhu

IPC: H04N19/00 ,  H04N19/46 ,  H04N21/234 ,  H04N21/44 ,  H04N19/70 ,  H04N7/14 ,  H04N7/15 ,  H04N7/18 ,  H04N19/573 ,  H04N19/58

CPC classification number: H04N19/46 ,  H04N7/147 ,  H04N7/15 ,  H04N7/18 ,  H04N19/573 ,  H04N19/58 ,  H04N19/70 ,  H04N21/23424 ,  H04N21/44016

Abstract: Innovations in syntax and semantics of coded picture buffer removal delay (“CPBRD”) values potentially simplify splicing operations. For example, a video encoder sets a CPBRD value for a current picture that indicates an increment value relative to a nominal coded picture buffer removal time of a preceding picture in decoding order, regardless of whether the preceding picture has a buffering period SEI message. The encoder can signal the CPBRD value according to a single-value approach in which a flag indicates how to interpret the CPBRD value, according to a two-value approach in which another CPBRD value (having a different interpretation) is also signaled, or according to a two-value approach that uses a flag and a delta value. A corresponding video decoder receives and parses the CPBRD value for the current picture. A splicing tool can perform simple concatenation operations to splice bitstreams using the CPBRD value for the current picture.

公开(公告)号：US11284103B2

公开(公告)日：2022-03-22

申请号：US14455856

申请日：2014-08-08

Applicant: Microsoft Corporation

Inventor： Lihua Zhu ,  Yongjun Wu ,  Gary J. Sullivan

IPC: H04N19/52 ,  H04N19/11 ,  H04N19/61 ,  H04N19/70 ,  H04N19/119 ,  H04N19/593 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

Abstract: Innovations in intra block copy (“BC”) prediction as well as innovations in encoder-side search patterns and approaches to partitioning. For example, some of the innovations relate to use of asymmetric partitions for intra BC prediction. Other innovations relate to search patterns or approaches that an encoder uses during block vector estimation (for intra BC prediction) or motion estimation. Still other innovations relate to uses of BV search ranges that have a horizontal or vertical bias during BV estimation.

公开(公告)号：US09210434B2

公开(公告)日：2015-12-08

申请号：US13916511

申请日：2013-06-12

Applicant: Microsoft Corporation

Inventor： Lihua Zhu ,  Sridhar Sankuratri ,  Alp Emre Kanlikilicer ,  Tong Wynn ,  Vladimir Stoyanov ,  B. Anil Kumar ,  Nadim Abdo

IPC: H04N19/17 ,  H04L29/06 ,  G06F3/14 ,  H04N21/234 ,  H04N21/235 ,  H04N21/266 ,  H04N21/2662 ,  H04N19/176 ,  H04N19/12 ,  H04N19/136 ,  H04N19/85 ,  H04N19/34 ,  H04N19/112 ,  H04N19/167

CPC classification number: G06F3/1454 ,  G09G5/003 ,  G09G2320/0613 ,  G09G2320/103 ,  G09G2340/02 ,  G09G2350/00 ,  G09G2370/022 ,  H04L65/602 ,  H04L65/80 ,  H04L69/04 ,  H04N19/112 ,  H04N19/12 ,  H04N19/136 ,  H04N19/167 ,  H04N19/17 ,  H04N19/176 ,  H04N19/34 ,  H04N19/85 ,  H04N21/23406 ,  H04N21/2353 ,  H04N21/26603 ,  H04N21/2662

Abstract: Methods and systems for delivering screen content to a client device are disclosed. One method includes, for each of a plurality of coding units corresponding to screen regions included in a screen at a particular time, classifying screen content included in the coding unit as having a content type selected from among a plurality of content types, at least one of the content types comprising a screen image type, and, based on a determination that the screen content has a screen image type, applying a progressive standards-based encoding to the screen content of that coding unit. The method also includes transmitting encoded screen content for each of the screen regions to the client device.

Abstract translation: 公开了将屏幕内容传送到客户端设备的方法和系统。 一种方法包括对于与特定时间的屏幕中包括的屏幕区域相对应的多个编码单元中的每一个，将包括在编码单元中的屏幕内容分类为具有从多个内容类型中选择的内容类型，至少一个 包括屏幕图像类型的内容类型，并且基于屏幕内容具有屏幕图像类型的确定，对该编码单元的屏幕内容应用基于逐行标准的编码。 该方法还包括将用于每个屏幕区域的编码屏幕内容发送到客户端设备。

公开(公告)号：US20150208084A1

公开(公告)日：2015-07-23

申请号：US14455856

申请日：2014-08-08

Applicant: Microsoft Corporation

Inventor： Lihua Zhu ,  Yongjun Wu ,  Gary J. Sullivan

IPC: H04N19/52 ,  H04N19/159 ,  H04N19/176 ,  H04N19/105

Abstract: Innovations in intra block copy (“BC”) prediction as well as innovations in encoder-side search patterns and approaches to partitioning. For example, some of the innovations relate to use of asymmetric partitions for intra BC prediction. Other innovations relate to search patterns or approaches that an encoder uses during block vector estimation (for intra BC prediction) or motion estimation. Still other innovations relate to uses of BV search ranges that have a horizontal or vertical bias during BV estimation.

Abstract translation: 块内复制（“BC”）预测的创新以及编码器侧搜索模式和分区方法的创新。 例如，一些创新涉及使用不对称分区进行BC内预测。 其他创新涉及编码器在块矢量估计（对于帧内BC预测）或运动估计中使用的搜索模式或方法。 还有其他创新涉及在BV估计期间具有水平或垂直偏差的BV搜索范围的使用。

公开(公告)号：US08817179B2

公开(公告)日：2014-08-26

申请号：US13736688

申请日：2013-01-08

Applicant: Microsoft Corporation

Inventor： Lihua Zhu ,  Sridhar Sankuratri ,  B. Anil Kumar ,  Nadim Abdo

IPC: H04N11/20

CPC classification number: H04N9/64 ,  H04N19/186 ,  H04N19/85 ,  H04N19/88

Abstract: Converting a first format frame to one or more second format frames. In one embodiment, a method includes accessing a first format frame using n coefficients, where n is the total number of coefficients used for the Y, U and V planes of the first format frame. The method further includes mapping the coefficients of the first format frame to coefficients of one or more second format frames. The one or more second format frames have n coefficients across all of the second format frames matching the n coefficients of the first format frame.

Abstract translation: 将第一格式帧转换为一个或多个第二格式帧。 在一个实施例中，一种方法包括使用n个系数访问第一格式帧，其中n是用于第一格式帧的Y，U和V平面的系数的总数。 该方法还包括将第一格式帧的系数映射到一个或多个第二格式帧的系数。 一个或多个第二格式帧在与第一格式帧的n个系数匹配的所有第二格式帧中具有n个系数。

公开(公告)号：US10390034B2

公开(公告)日：2019-08-20

申请号：US14222580

申请日：2014-03-21

Applicant: Microsoft Corporation

Inventor： Lihua Zhu ,  Gary J. Sullivan ,  Yongjun Wu

IPC: H04N19/51 ,  H04N19/52 ,  H04N19/105 ,  H04N19/167 ,  H04N19/176 ,  H04N19/583 ,  H04N19/593

Abstract: Innovations in encoder-side options for intra block copy (“BC”) prediction mode facilitate intra BC prediction that is more effective in terms of rate-distortion performance and/or computational efficiency of encoding. For example, some of the innovations relate to estimation of sample values within an overlap area of a current block during block vector estimation. Other innovations relate to prediction of block vector (“BV”) values during encoding or decoding using “ping-pong” approaches.

公开(公告)号：US20150195526A1

公开(公告)日：2015-07-09

申请号：US14222580

申请日：2014-03-21

Applicant: Microsoft Corporation

Inventor： Lihua Zhu ,  Gary J. Sullivan

IPC: H04N19/583 ,  H04N19/51

CPC classification number: H04N19/51 ,  H04N19/105 ,  H04N19/167 ,  H04N19/176 ,  H04N19/52 ,  H04N19/583 ,  H04N19/593

Abstract: Innovations in encoder-side options for intra block copy (“BC”) prediction mode facilitate intra BC prediction that is more effective in terms of rate-distortion performance and/or computational efficiency of encoding. For example, some of the innovations relate to estimation of sample values within an overlap area of a current block during block vector estimation. Other innovations relate to prediction of block vector (“BV”) values during encoding or decoding using “ping-pong” approaches.

Abstract translation: 用于帧内复制（“BC”）预测模式的编码器侧选项的创新促进了在速率失真性能和/或编码的计算效率方面更有效的帧内BC预测。 例如，一些创新涉及在块向量估计期间对当前块的重叠区域内的采样值的估计。 其他创新涉及使用“乒乓”方法在编码或解码期间对块向量（“BV”）值的预测。

公开(公告)号：US20140192893A1

公开(公告)日：2014-07-10

申请号：US14109670

申请日：2013-12-17

Applicant: Microsoft Corporation

Inventor： Gary J. Sullivan ,  Lihua Zhu

IPC: H04N19/44 ,  H04N19/91 ,  H04N19/117 ,  H04N19/503 ,  H04N19/583

CPC classification number: H04N19/46 ,  H04N7/147 ,  H04N7/15 ,  H04N7/18 ,  H04N19/573 ,  H04N19/58 ,  H04N19/70 ,  H04N21/23424 ,  H04N21/44016

Abstract: Innovations in syntax and semantics of coded picture buffer removal delay (“CPBRD”) values potentially simplify splicing operations. For example, a video encoder sets a CPBRD value for a current picture that indicates an increment value relative to a nominal coded picture buffer removal time of a preceding picture in decoding order, regardless of whether the preceding picture has a buffering period SEI message. The encoder can signal the CPBRD value according to a single-value approach in which a flag indicates how to interpret the CPBRD value, according to a two-value approach in which another CPBRD value (having a different interpretation) is also signaled, or according to a two-value approach that uses a flag and a delta value. A corresponding video decoder receives and parses the CPBRD value for the current picture. A splicing tool can perform simple concatenation operations to splice bitstreams using the CPBRD value for the current picture.

Abstract translation: 编码图像缓冲区移除延迟（“CPBRD”）值的语法和语义的创新可能会简化拼接操作。 例如，无论前一图像是否具有缓冲周期SEI消息，视频编码器以解码顺序为相对于前一图像的标称编码图像缓冲器去除时间指示增量值的当前图像设置CPBRD值。 编码器可以根据其中标志指示如何解释CPBRD值的单值方法来发送CPBRD值，根据两值方法，其中另一个CPBRD值（具有不同的解释）也被发信号，或根据 到使用标志和增量值的两值方法。 相应的视频解码器接收并解析当前图像的CPBRD值。 拼接工具可以使用当前图片的CPBRD值执行简单的级联操作来拼接比特流。