公开(公告)号：US09860285B2

公开(公告)日：2018-01-02

申请号：US14158096

申请日：2014-01-17

Applicant: Futurewei Technologies, Inc.

Inventor： Haoping Yu ,  Xin Wang

IPC: H04L29/06 ,  H04N19/27

CPC classification number: H04L65/403 ,  H04L65/607 ,  H04L69/04 ,  H04N19/27

Abstract: Embodiments of the invention provide a screen sharing technology including a local computing device and a remote computing device. The local computing device compresses pixel data captured from a frame buffer of the local computing device into a video stream. When the local computing device determines that a video visual component is to be displayed, it obtains compressed data for the video visual component, location information and temporal information. The remote computing device decodes the compressed data and the video stream in different decoder and displays the video stream and compressed data on its monitor according to the temporal information and location information. As such, the embodiment described above leads to better coding efficiency, better coding quality, and lower bit rate.

公开(公告)号：US09729885B2

公开(公告)日：2017-08-08

申请号：US14620059

申请日：2015-02-11

Applicant: Futurewei Technologies, Inc.

Inventor： Shervin Minaee ,  Haoping Yu

IPC: H04N19/50 ,  H04N19/136 ,  H04N19/44 ,  H04N19/176 ,  G06K9/46 ,  G06K9/62 ,  H04N19/593 ,  H04N19/103 ,  H04N19/463 ,  H04N19/186 ,  H04N19/184

CPC classification number: H04N19/136 ,  G06K9/4661 ,  G06K9/6215 ,  H04N19/103 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/44 ,  H04N19/463 ,  H04N19/50 ,  H04N19/593

Abstract: Embodiments are provided for compressing a color index map in video coding applications including screen content images. An embodiment method includes obtaining, at a video codec device, an image block, and generating a color index map comprising a plurality of entries and representing the image block. Each one of the entries is assigned a color index indicating a respective color. The method further includes assigning, in a correct prediction map, a first bit-value for each one of the entries that is predictable by a neighboring entry in the color index map, and a second bit-value for each one of the entries that is unpredictable by any neighboring entry in the color index map. Further, an actual value from the color index map for the each one of the entries that is unpredictable by any neighboring entry is added in a sequence of non-predictable color indices.

公开(公告)号：US20170055003A1

公开(公告)日：2017-02-23

申请号：US14831408

申请日：2015-08-20

Applicant: Futurewei Technologies, Inc.

Inventor： Haoping Yu ,  Wei Wang ,  Meng Xu

IPC: H04N19/90 ,  H04N19/13

CPC classification number: H04N19/90 ,  H04N19/13 ,  H04N19/593 ,  H04N19/70 ,  H04N19/93

Abstract: An encoding apparatus includes a processor configured to receive a video frame including screen content and generate a block containing an index map of colors for screen content in the video frame. The block includes a first string of index values and a second string of the index values immediately below the first string. The processor is also configured to encode a second string palette_run_type flag corresponding to the second string without referencing a first string palette_run_type flag corresponding to the first string and using a single available context. A transmitter operably coupled to the processor is configured to transmit the second string palette_run_type flag in a bitstream to a decoding apparatus.

Abstract translation: 编码装置包括：处理器，被配置为接收包括屏幕内容的视频帧，并生成包含视频帧中的屏幕内容的颜色的索引图的块。 该块包括第一个索引值串和第一个字符串正下方的索引值的第二个字符串。 处理器还被配置为对与第二字符串相对应的第二字符串palette_run_type标志进行编码，而不引用与第一字符串相对应的第一字符串palette_run_type标志并使用单个可用上下文。 可操作地耦合到处理器的发射机被配置为将比特流中的第二串palette_run_type标志发送到解码装置。

公开(公告)号：US20160373756A1

公开(公告)日：2016-12-22

申请号：US15178316

申请日：2016-06-09

Applicant: Futurewei Technologies, Inc.

Inventor： Haoping Yu ,  Meng Xu ,  Wei Wang ,  Fanyi Duanmu ,  Shervin Minaee

IPC: H04N19/13 ,  H04N19/513 ,  H04N19/119 ,  H04N19/129 ,  H04N19/176 ,  H04N19/96

CPC classification number: H04N19/513 ,  H04N19/119 ,  H04N19/176 ,  H04N19/96

Abstract: An encoding apparatus, decoding apparatus, and coding methods are provided. A method of decoding including receiving, by a decoder, a bitstream from an encoder, scanning, using the decoder, the bitstream to identify a first flag corresponding to a string of index values in a block other than a last string and a second flag corresponding to the last string of index values from the block, determining, by the decoder, that a context model used to encode the first flag is the same as the context model used to encode the second flag, and generating, by the decoder, a video frame using the context model

Abstract translation: 提供了编码装置，解码装置和编码方法。 一种解码方法，包括由解码器从编码器接收比特流，使用解码器扫描比特流，以识别与除最后一个字符串以外的块中的索引值串相对应的第一标志和相应的第二标志 对于来自块的索引值的最后一串，由解码器确定用于对第一标记进行编码的上下文模型与用于编码第二标志的上下文模型相同，并且由解码器生成视频 框架使用上下文模型

公开(公告)号：US09253508B2

公开(公告)日：2016-02-02

申请号：US13668094

申请日：2012-11-02

Applicant: Futurewei Technologies, Inc.

Inventor： Wen Gao ,  Minqiang Jiang ,  Ye He ,  Jin Song ,  Haoping Yu

IPC: H04N7/32 ,  H04N19/91 ,  H04N19/593 ,  H04N19/147 ,  H04N19/11 ,  H04N19/137 ,  H04N19/182 ,  H04N19/174

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/137 ,  H04N19/147 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/91

Abstract: A video codec comprising a processor configured to compute a reconstructed pixel based on a residual pixel and a first prediction pixel and compute a second prediction pixel in a directional intra prediction mode based on the reconstructed pixel, wherein the first and second prediction pixels are located in a same block of a video frame. A method for intra prediction comprising computing a prediction pixel adaptively based on a plurality of reconstructed neighboring pixels, wherein a distance between the prediction pixel and each of the plurality of reconstructed neighboring pixels is one.

Abstract translation: 一种视频编解码器，包括：处理器，被配置为基于残余像素和第一预测像素计算重构像素，并且基于所述重建像素计算定向帧内预测模式中的第二预测像素，其中所述第一和第二预测像素位于 相同的视频帧块。 一种用于帧内预测的方法，包括：基于多个重构的相邻像素自适应地计算预测像素，其中所述预测像素与所述多个重建的相邻像素中的每一者之间的距离为一。

公开(公告)号：US20130195186A1

公开(公告)日：2013-08-01

申请号：US13756153

申请日：2013-01-31

Applicant: FUTUREWEI TECHNOLOGIES, INC.

Inventor： Haoping Yu ,  Wen Gao

IPC: H04N7/26

CPC classification number: H04N19/33 ,  H04N19/50

Abstract: A method of scalable video encoding, the method comprising encoding a first video signal using a base layer encoding, and encoding a second video signal using an enhancement layer encoding, wherein the enhancement layer encoding uses inter-layer prediction information based on the first video signal, wherein one of the first video signal or the second video signal has a resolution of 960×540, wherein the second video signal has a higher resolution than the first video signal, and wherein the first video signal is related to the second video signal by a spatial resolution factor that is an integer or an integer ratio.

Abstract translation: 一种可分级视频编码的方法，所述方法包括使用基本层编码对第一视频信号进行编码，以及使用增强层编码对第二视频信号进行编码，其中所述增强层编码使用基于所述第一视频信号的层间预测信息 其中，所述第一视频信号或所述第二视频信号中的一个具有960×540的分辨率，其中所述第二视频信号具有比所述第一视频信号更高的分辨率，并且其中所述第一视频信号与所述第二视频信号相关， 一个整数或整数比的空间分辨率因子。

公开(公告)号：US10291827B2

公开(公告)日：2019-05-14

申请号：US14549405

申请日：2014-11-20

Applicant: Futurewei Technologies Inc.

Inventor： Zhan Ma ,  Wei Wang ,  Haoping Yu ,  Xian Wang ,  Jing Ye

IPC: G06K9/00 ,  H04N1/64 ,  G06T9/00 ,  H04N19/70 ,  H04N19/593 ,  H04N19/503 ,  H04N19/93 ,  H04N19/176 ,  H04N19/186 ,  H04N19/157 ,  H04N19/174

Abstract: A method and device for coding screen content into a bitstream by selecting a color palette table for a coding unit (CU) of screen content, creating a color index map having indices for the coding unit (CU), and encoding the selected color palette table and the color index map for the CU into a bitstream.

公开(公告)号：US10148977B2

公开(公告)日：2018-12-04

申请号：US15178316

申请日：2016-06-09

Applicant: Futurewei Technologies, Inc.

Inventor： Haoping Yu ,  Meng Xu ,  Wei Wang ,  Fanyi Duanmu ,  Shervin Minaee

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/119 ,  H04N19/96

Abstract: An encoding apparatus, decoding apparatus, and coding methods are provided. A method of decoding including receiving, by a decoder, a bitstream from an encoder, scanning, using the decoder, the bitstream to identify a first flag corresponding to a string of index values in a block other than a last string and a second flag corresponding to the last string of index values from the block, determining, by the decoder, that a context model used to encode the first flag is the same as the context model used to encode the second flag, and generating, by the decoder, a video frame using the context model.

公开(公告)号：US10038908B2

公开(公告)日：2018-07-31

申请号：US15620057

申请日：2017-06-12

Applicant: Futurewei Technologies, Inc.

Inventor： Haoping Yu ,  Wei Wang ,  Zhan Ma ,  Meng Xu

IPC: H04N19/186 ,  H04N19/103 ,  H04N19/13 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/463 ,  H04N19/44 ,  H04N19/70 ,  H04N19/91 ,  H04N19/593 ,  H04N19/124 ,  H04N19/94

CPC classification number: H04N19/186 ,  H04N19/103 ,  H04N19/124 ,  H04N19/13 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/463 ,  H04N19/593 ,  H04N19/70 ,  H04N19/91 ,  H04N19/94

Abstract: An encoding apparatus and coding methods. The method includes receiving a video frame including screen content, generating a block containing an index map of colors for screen content in the video frame, wherein the block includes strings of index values, encoding one or multiple consecutive index values in a first string of index values using same escape colors index values and a run value identifying how many of the same escape color index values have been consecutively encoded, where the escape colors index values represent escape colors, and where the escape colors are colors not included in a palette corresponding to the block, sequentially encoding the escape colors corresponding to the one or multiple consecutive index values after all of the strings of index values of the block have been encoded, and transmitting the strings of index values and the escape colors in a bitstream to a decoding apparatus.

公开(公告)号：US09930362B2

公开(公告)日：2018-03-27

申请号：US13866468

申请日：2013-04-19

Applicant: Futurewei Technologies, Inc.

Inventor： Wen Gao ,  Minqiang Jiang ,  Haoping Yu

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/51 ,  H04N19/13 ,  H04N19/134 ,  H04N19/11 ,  H04N19/14 ,  H04N19/182

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/13 ,  H04N19/134 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/51

Abstract: A method for improved prediction in boundary samples in prediction units (PUs) in pixel based prediction. The method includes computing predicted values for a plurality of border pixels in a PU using corresponding left, upper, and upper left adjacent neighboring pixels in the PU. The method further includes computing predicted values for a second plurality of pixels in the PU using sample based angular prediction (SAP). The second plurality of pixels includes all other pixels in the PU besides the plurality of border pixels.