公开(公告)号：US20140064365A1

公开(公告)日：2014-03-06

申请号：US13777079

申请日：2013-02-26

Applicant: RESEARCH IN MOTION LIMITED

Inventor： Jing WANG ,  Dake HE ,  Xiang YU ,  Tianying JI

IPC: H04N7/26

CPC classification number: H04N19/174 ,  H03M7/3079 ,  H03M7/4018 ,  H04N19/129 ,  H04N19/13 ,  H04N19/176 ,  H04N19/18 ,  H04N19/187 ,  H04N19/30 ,  H04N19/59 ,  H04N19/597 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91

Abstract: Methods and devices for decoding, in a video decoder, a block of enhancement-layer transform domain data for an enhancement-layer encoded video and corresponding to a reconstructed block of reference-layer transform domain data, are provided. The method includes determining a context for an enhancement-layer element based, at least in part, upon elements in the corresponding reconstructed block of reference-layer transform domain data, wherein the elements are identified by a template and wherein the position of the template in the reference-layer reconstructed block is based upon the position of that enhancement-layer element in the block of enhancement-layer transform domain data.

Abstract translation: 在视频解码器中，解码用于增强层编码视频的增强层变换域数据块并与重构的参考层变换域数据块对应的方法和装置。 该方法包括至少部分地基于参考层转换域数据的对应的重建块中的元素来确定增强层元素的上下文，其中元素由模板识别，并且其中模板的位置 参考层重建块基于该增强层元素在增强层变换域数据块中的位置。

公开(公告)号：US20130272384A1

公开(公告)日：2013-10-17

申请号：US13775284

申请日：2013-02-25

Applicant: RESEARCH IN MOTION LIMITED

Inventor： Xiang YU ,  Jing WANG ,  Dake HE

IPC: H04N7/26

CPC classification number: H04N19/129 ,  H04N19/124 ,  H04N19/61 ,  H04N19/91

Abstract: Methods and devices for reconstructing coefficient levels from a bitstream of encoded video data for a coefficient group in a transform unit, and corresponding methods and devices for encoding are provided. The method of reconstructing includes, for each of the non-zero coefficients in the coefficient group, in scan order, decoding a greater-than-one flag for that non-zero coefficient if fewer than two previously-decoded greater-than-one flags for that coefficient group are equal to one. The coefficient levels for the non-zero coefficients are reconstructed based, at least in part, upon the decoded greater-than-one flags.

Abstract translation: 提供了用于从变换单元中的系数组的编码视频数据的比特流重建系数级的方法和装置，以及用于编码的相应方法和装置。 重建方法对于系数组中的每个非零系数包括扫描顺序，如果少于两个先前解码的大于1的标志，则对于该非零系数解码大于一个标志 该系数组等于1。 至少部分地基于解码的大于1的标记来重构非零系数的系数级别。

公开(公告)号：US20130129241A1

公开(公告)日：2013-05-23

申请号：US13681551

申请日：2012-11-20

Applicant: Research In Motion Limited

Inventor： Jing WANG ,  Xiang YU ,  Dake HE ,  Steven Wayne CAMPBELL

IPC: G06T9/00

CPC classification number: H04N19/117 ,  G06T9/004 ,  H04N19/19 ,  H04N19/50 ,  H04N19/60 ,  H04N19/625 ,  H04N19/82

Abstract: Methods and devices for encoding and decoding data using transform domain filtering are described. The encoder determines a set of transform domain filter coefficients to be applied to a transform domain prediction. The filtering may, in some cases, also apply to transform domain reconstructions. Rate-distortion optimization may be used to determine the optimal filter coefficients on a frame-basis, coding-unit-basis, or other basis. Multiple filters may be developed and communicated from the encoder to the decoder for different combinations of transform block size, coding mode, prediction mode, and texture type. In other cases, the filtering is applied in the pixel-domain to a pixel-domain prediction or a pixel-domain reconstruction of a block of samples.

公开(公告)号：US20140064364A1

公开(公告)日：2014-03-06

申请号：US13776755

申请日：2013-02-26

Applicant: RESEARCH IN MOTION LIMITED

Inventor： Jing WANG ,  Dake HE ,  Xiang YU ,  Tianying JI

IPC: H04N7/26

CPC classification number: H04N19/503 ,  H04N19/187 ,  H04N19/33 ,  H04N19/59 ,  H04N19/61 ,  H04N19/80

Abstract: Methods and devices for encoding and decoding scalable video are described. In one aspect, a method of reconstructing, in a video decoder, an enhancement-layer image based upon a reconstructed reference-layer image using inter-layer prediction is described. The method includes reconstructing a reference-layer residual and a reference-layer prediction, wherein the reference-layer residual and the reference-layer prediction, when combined, form the reconstructed reference-layer image; up-sampling the reference-layer residual using a first up-sampling operation; up-sampling the reference-layer prediction using a second up-sampling operation different from the first up-sampling operation; generating an inter-layer prediction using the up-sampled reference-layer residual and the up-sampled reference-layer prediction; and reconstructing the enhancement-layer image based upon the inter-layer prediction.

Abstract translation: 描述了用于编码和解码可缩放视频的方法和设备。 在一个方面中，描述了一种在视频解码器中使用层间预测基于重构的参考层图像来重建增强层图像的方法。 该方法包括重建参考层残差和参考层预测，其中当组合时参考层残差和参考层预测形成重建的参考层图像; 使用第一上采样操作对参考层残差进行上采样; 使用与第一上采样操作不同的第二上采样操作对参考层预测进行上采样; 使用上采样参考层残差和上采样参考层预测产生层间预测; 以及基于层间预测来重构增强层图像。

公开(公告)号：US20140010288A1

公开(公告)日：2014-01-09

申请号：US13776858

申请日：2013-02-26

Applicant: RESEARCH IN MOTION LIMITED

Inventor： En-hui YANG ,  Xiang YU

IPC: H04N7/26

CPC classification number: H04N19/00781 ,  H04N19/103 ,  H04N19/147 ,  H04N19/61

Abstract: A method of encoding video data using soft decision quantization makes use of iterative encoding to provide the ability to optimize encoding across different functional elements in a hybrid video encoder. Iterative encoding is used to allow quantization step size, motion prediction and quantization levels to be optimized despite their interrelated nature.

Abstract translation: 使用软判决量化对视频数据进行编码的方法使用迭代编码来提供在混合视频编码器中跨越不同功能元件优化编码的能力。 迭代编码用于允许量化步长，运动预测和量化级别尽可能优化，尽管它们具有相互关联的性质。

公开(公告)号：US20140003488A1

公开(公告)日：2014-01-02

申请号：US13775286

申请日：2013-02-25

Applicant: RESEARCH IN MOTION LIMITED

Inventor： Tianying JI ,  Xiang YU ,  Dake HE

IPC: H04N7/26

CPC classification number: H04N19/134 ,  H04N19/70

Abstract: Methods of encoding and decoding for video data for encoding or decoding a sequence of greater-than-one flags for a coefficient group are provided. Context-based encoding and decoding selects a context for encoding or decoding the greater-than-one flag based upon the position of the greater-than-one flag in the sequence of greater-than-one flags. Selection of the context may also be based upon the position of the last-non-zero coefficient in the coefficient group.

Abstract translation: 提供了用于编码或解码用于系数组的大于一个标志的序列的视频数据的编码和解码方法。 基于上下文的编码和解码基于大于一个标志的序列中的大于1的标志的位置来选择用于对大于1的标记进行编码或解码的上下文。 上下文的选择也可以基于系数组中最后非零系数的位置。

公开(公告)号：US20130235936A1

公开(公告)日：2013-09-12

申请号：US13774199

申请日：2013-02-22

Applicant: RESEARCH IN MOTION LIMITED

Inventor： Steven Wayne CAMPBELL ,  Dake HE ,  Xiang YU ,  Jing WANG

IPC: H04N7/26

CPC classification number: H04N19/513 ,  H04N19/467 ,  H04N19/48 ,  H04N19/52

Abstract: Methods of encoding and decoding for video data for encoding or decoding motion vector difference components for inter-coded video are described. The sign of one of the components is hidden within the parity of the sum of the magnitudes of the horizontal and vertical difference components. The sign of the other of the components is explicitly signaled in the bitstream. The hidden sign may be assigned to the larger in magnitude of the two components. In other cases, the hidden sign may always be assigned to the horizontal or vertical component. In another case, the hidden sign may always be assigned to one component, unless that component is zero, in which case the hidden sign is assigned to the other component. In another case, both components may have their signs hidden, in which case the sign hiding is based on their respective parity, rather than the parity of their sum.

Abstract translation: 描述用于编码或解码用于帧间编码视频的运动矢量差分分量的视频数据的编码和解码方法。 其中一个组件的符号隐藏在水平和垂直差分分量的大小之和的奇偶校验之内。 在比特流中明确地显示了其他组件的符号。 隐藏的符号可以分配给两个组件的较大的大小。 在其他情况下，隐藏的标志总是可以分配给水平或垂直分量。 在另一种情况下，隐藏的符号总是被分配给一个组件，除非该组件为零，在这种情况下，隐藏的符号被分配给另一个组件。 在另一种情况下，两个组件可能会隐藏其标志，在这种情况下，标识隐藏是基于它们各自的奇偶性而不是它们的和的奇偶校验。