公开(公告)号：US11323717B2

公开(公告)日：2022-05-03

申请号：US16895653

申请日：2020-06-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhijie Zhao ,  Bastian Wandt ,  Yiqun Liu ,  Thorsten Laude ,  Bodo Rosenhahn ,  Joern Ostermann

IPC: H04N19/132 ,  H04N19/137 ,  H04N19/176 ,  H04N19/186 ,  H04N19/625

Abstract: The present disclosure relates to encoding and decoding video by employing texture coding. In particular, a texture region is identified within a video picture and a texture patch is determined for the texture region. Moreover, a first set of parameters is derived specifying weighting factors for reconstructing spectral coefficients of the texture region by fitting the texture region in a spectral domain to a first function of the texture patch, the first function being defined by the first set of parameters. The texture patch and the first set of parameters are then included into a bitstream which is output by an encoder and provided in this way to the decoder which reconstructs the texture based on the patch and the function applied to the patch.

公开(公告)号：US11252413B2

公开(公告)日：2022-02-15

申请号：US16895736

申请日：2020-06-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhijie Zhao ,  Bastian Wandt ,  Yiqun Liu ,  Thorsten Laude ,  Bodo Rosenhahn ,  Joern Ostermann

IPC: H04N19/136 ,  H04N19/103 ,  H04N19/17 ,  H04N19/543

Abstract: The present disclosure relates to encoding a decoding video employing texture coding. In particular, a texture region is identified within a video picture and a texture patch is determined for said region. Moreover, a set of parameters specifies luminance within the texture region (1001) by fitting the texture region samples to a two-dimensional polynomial function of the patch determined according to the set of parameters (1040); and/or motion within the texture region by fitting motion estimated between the texture region of the video picture and an adjacent picture to a two-dimensional polynomial The texture patch and the first set of parameters are then included into a bitstream which is output of the encoder and provided in this way to the decoder which reconstructs the texture based on the patch and the function applied to the patch.

公开(公告)号：US20150264361A1

公开(公告)日：2015-09-17

申请号：US14657744

申请日：2015-03-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Thorsten Laude ,  Jorn Ostermann ,  Marco Munderloh ,  Haoping Yu

IPC: H04N19/172 ,  H04N19/136 ,  H04N19/119

CPC classification number: H04N19/543 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176 ,  H04N19/46 ,  H04N19/93

Abstract: Coding of screen content includes identifying corresponding areas in one or more previously coded frames to code unchanged areas in current frames. An unchanged area in a current frame is coded by copying a corresponding area from a previously coded frame or several previously coded frames. Usage of a copy mode to be applied to the unchanged areas is signaled in an encoding bitstream. The copy mode can be signaled for each unchanged area or a single copy mode is signaled for a group of unchanged areas. The copy mode can be automatically applied to one or more unchanged areas contiguous to the group of unchanged areas without further signaling the copy mode. Copying the corresponding area from the previously coded frame includes copying palette entries from the previously coded frame. Palette entries copied from the previously coded frame are reordered according to frequency of appearance.

Abstract translation: 屏幕内容的编码包括识别一个或多个先前编码的帧中的相应区域，以对当前帧中的不变区进行编码。 通过从先前编码的帧或多个先前编码的帧复制相应的区域来对当前帧中的未改变的区域进行编码。 将复制模式应用于不变区域的使用在编码比特流中被通知。 可以针对每个不变的区域发信号通知复制模式，或者为一组不变的区域发信号通知一个复制模式。 可以将复制模式自动应用于与该组未改变区域相邻的一个或多个不变区域，而不进一步发信号通知复制模式。 从先前编码的帧复制相应的区域包括从先前编码的帧中复制调色板条目。 从先前编码的帧复制的调色板条目根据外观频率重新排列。

公开(公告)号：US20150262404A1

公开(公告)日：2015-09-17

申请号：US14645136

申请日：2015-03-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Thorsten Laude ,  Marco Munderloh ,  Joern Ostermann

IPC: G06T11/60 ,  H04N19/593 ,  G06T9/00 ,  H04N19/44

CPC classification number: G06T9/00 ,  H04N19/103 ,  H04N19/124 ,  H04N19/167 ,  H04N19/17 ,  H04N19/46

Abstract: An apparatus comprising a processor configured to obtain mixed content video comprising images comprising computer generated screen content (SC) and natural content (NC), partition the images into SC areas and NC areas, and encode the images by encoding the SC areas with SC coding tools and encoding the NC areas with NC coding tools, and a transmitter coupled to the processor, wherein the transmitter is configured to transmit data to a client device, the data comprising the encoded images and an indication of boundaries of the partition.

Abstract translation: 一种装置，包括：处理器，被配置为获得包括计算机生成的屏幕内容（SC）和自然内容（NC）的图像的混合内容视频，将图像分割成SC区域和NC区域，并且通过用SC编码对SC区域进行编码来对图像进行编码 工具和使用NC编码工具对NC区域进行编码，以及耦合到处理器的发射机，其中发射机被配置为向客户端设备发送数据，包括编码图像的数据和分区边界的指示。