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1. 发明申请

WO2008148205A1 METHOD AND DEVICE FOR DOWN-SAMPLING A DCT IMAGE IN THE DCT DOMAIN 审中-公开
标题翻译：用于在DCT域中下采样DCT图像的方法和装置
公开(公告)号：WO2008148205A1
公开(公告)日：2008-12-11
申请号：PCT/CA2008/001080
申请日：2008-06-04
申请人： RESEARCH IN MOTION LIMITED , YU, Xiang , YANG, En-hui , WANG, Haiquan
发明人： YU, Xiang , YANG, En-hui , WANG, Haiquan
IPC分类号： G06T3/40 , G06T9/00 , H04N7/50 , H04Q7/32
CPC分类号： G06T3/4084
摘要： A method and device that uses transform matrices to down-sample a DCT image directly in the DCT domain. The transform matrices have been selected to minimize an optimization problem which is a function of the visual quality of down-sampled images obtained using the matrices and the computational complexity associated with using the transform matrices. The transform matrices comprise a row transform matrix and a column transform matrix. A down-sampled image is produced by determining an intermediary matrix as the product of the DCT image and one of either the row transform matrix or the column transform matrix and then determining the down-sampled image as the product of the intermediary matrix and the transform matrix not already used to determine the intermediary matrix.
摘要翻译：一种使用变换矩阵直接在DCT域中对DCT图像进行下采样的方法和装置。已经选择了变换矩阵以最小化优化问题，该优化问题是使用矩阵获得的下采样图像的视觉质量以及与使用变换矩阵相关联的计算复杂度的函数。变换矩阵包括行变换矩阵和列变换矩阵。通过将中间矩阵确定为DCT图像与行变换矩阵或列变换矩阵之一的乘积，然后将下采样图像确定为中间矩阵和变换的乘积来产生下采样图像矩阵尚未用于确定中间矩阵。

2. 发明申请

WO2008148207A1 METHOD AND DEVICE FOR SELECTING OPTIMAL TRANSFORM MATRICES FOR DOWN-SAMPLING DCT IMAGE 审中-公开
标题翻译：用于选择用于下采样DCT图像的最佳变换矩阵的方法和装置
公开(公告)号：WO2008148207A1
公开(公告)日：2008-12-11
申请号：PCT/CA2008/001082
申请日：2008-06-04
申请人： RESEARCH IN MOTION LIMITED , YU, Xiang , YANG, En-hui , WANG, Haiquan
发明人： YU, Xiang , YANG, En-hui , WANG, Haiquan
IPC分类号： G06T3/40 , G06T9/00 , H04N7/50 , H04Q7/32
CPC分类号： G06T3/4084 , H04N19/40 , H04N19/48 , H04N19/60
摘要： Down-sampling of an image may be performed in the DCT domain. Transform matrices are obtained for down-sampling a DCT image of size M x N to a down-sampled DCT image of size I x J. The transform matrices may be used to down-sample the DCT image directly in the DCT domain. A spatial domain down-sampling method is selected and applied to the DCT image to produce a down-sampled DCT reference image. The transform matrices are selected by solving an optimization problem, leading to transform matrices which achieve a desired trade-off between the visual quality of images obtained using the transform matrices and the computational complexity associated with using the transform matrices. The visual quality is a measure of the difference between the down-sampled DCT image obtained using the transform matrices and the visual quality of the DCT reference image obtained using a spatial domain down-sampling method.
摘要翻译：可以在DCT域中执行图像的下采样。获得变换矩阵以将尺寸为M×N的DCT图像下采样到尺寸为I×J的下采样DCT图像。变换矩阵可以用于在DCT域中直接对DCT图像进行下采样。选择空间域下采样方法并将其应用于DCT图像以产生下采样DCT参考图像。通过求解优化问题来选择变换矩阵，导致变换矩阵，其在使用变换矩阵获得的图像的视觉质量和与使用变换矩阵相关联的计算复杂度之间实现期望的权衡。视觉质量是使用变换矩阵获得的下采样DCT图像与使用空间域下采样方法获得的DCT参考图像的视觉质量之间的差的度量。

3. 发明申请

WO2009100535A1 METHOD AND SYSTEM FOR OPTIMIZING QUANTIZATION FOR NOISY CHANNELS 审中-公开
标题翻译：用于优化噪声通道量化的方法和系统
公开(公告)号：WO2009100535A1
公开(公告)日：2009-08-20
申请号：PCT/CA2009/000176
申请日：2009-02-13
申请人： RESEARCH IN MOTION LIMITED , YANG, En-hui , WANG, Haiquan , YU, Xiang
发明人： YANG, En-hui , WANG, Haiquan , YU, Xiang
IPC分类号： H04L12/26 , H04L1/20 , H04W24/08 , H04W88/00
CPC分类号： H04L1/0014 , H03M7/3082 , H04L1/0042
摘要： ABSTRACT Methods are described for configuring a quantizer to achieve improved end-to-end distortion performance when transmitting encoded source data over a noisy channel. The codebook and partitioning are selected using an iterative process of determining an updated codebook and an updated partition space, where the updated codebook is based, in part, on the average symbol error probability of the channel. Complete knowledge of the transitional probabilities of the channel is not required. Variants of the iterative process are described.
摘要翻译：摘要描述了用于配置量化器以在通过有噪声通道发送编码的源数据时实现改进的端到端失真性能的方法。使用确定更新的码本和更新的分区空间的迭代过程来选择码本和划分，其中更新的码本部分地基于信道的平均符号错误概率。不需要完全了解频道的过渡概率。描述迭代过程的变体。

4. 发明申请

WO2008148206A1 METHOD AND DEVICE FOR SELECTING TRANSFORM MATRICES FOR DOWN-SAMPLING DCT IMAGE USING LEARNING WITH FORGETTING ALGORITHM 审中-公开
标题翻译：用于使用激励算法学习的用于选择用于下采样DCT图像的变换矩阵的方法和装置
公开(公告)号：WO2008148206A1
公开(公告)日：2008-12-11
申请号：PCT/CA2008/001081
申请日：2008-06-04
申请人： RESEARCH IN MOTION LIMITED , YU, Xiang , YANG, En-hui , WANG, Haiquan
发明人： YU, Xiang , YANG, En-hui , WANG, Haiquan
IPC分类号： G06T3/40 , G06T9/00 , H04N7/50 , H04Q7/30
CPC分类号： H04N19/625 , G06T3/4084 , H04N19/13 , H04N19/40 , H04N19/48 , H04N19/59 , H04N19/60
摘要： Down-sampling of an image may be performed in the DCT domain. A multiple layered network is used to select transform matrices for down-sampling a DCT image of size M x N to a DCT image of size I x J. A spatial domain down-sampling method is selected and applied to the DCT image to produce a down-sampled DCT reference image. A learning with forgetting algorithm is used to apply a decay to the elements of the transform matrix and select a transform matrices which solve an optimization problem. The optimization problem is a function of the visual quality of images obtained using the transform matrices and the computational complexity associated with using the transform matrices. The visual quality is a measure of the difference between the down-sampled DCT image obtained using the transform matrices and the visual quality of the DCT reference image obtained using a spatial domain down-sampling method.
摘要翻译：可以在DCT域中执行图像的下采样。使用多层网络来选择用于将大小为M×N的DCT图像下采样到DCT尺寸为I×J的DCT图像的变换矩阵。空间域下采样方法被选择并应用于DCT图像以产生下采样DCT参考图像。使用遗忘算法的学习对变换矩阵的元素应用衰减，并选择解决优化问题的变换矩阵。优化问题是使用变换矩阵获得的图像的视觉质量和与使用变换矩阵相关联的计算复杂度的函数。视觉质量是使用变换矩阵获得的下采样DCT图像与使用空间域下采样方法获得的DCT参考图像的视觉质量之间的差的度量。

5. 发明申请

WO2012003584A1 METHODS AND DEVICES FOR DATA COMPRESSION USING ADAPTIVE RECONSTRUCTION LEVELS 审中-公开
标题翻译：使用自适应重建级别进行数据压缩的方法和设备
公开(公告)号：WO2012003584A1
公开(公告)日：2012-01-12
申请号：PCT/CA2011/050401
申请日：2011-06-30
申请人： RESEARCH IN MOTION LIMITED , HE, Dake , YU, Xiang , YANG, En-Hui
发明人： HE, Dake , YU, Xiang , YANG, En-Hui
IPC分类号： H03M7/30 , H04N7/50
CPC分类号： H04N19/192 , H04N19/126 , H04N19/147 , H04N19/176 , H04N19/19
摘要： Encoding and decoding methods that perform quantization using adaptive reconstruction levels are presented. The reconstruction levels for a given partitioning of the data space may be selected based upon the distribution of data points within each sub-part defined by the partitioning. In some cases, the adaptive reconstruction levels may be based upon an average of the data points within each sub-part. In some cases, the adaptive reconstruction levels may be selected using a rate-distortion analysis including the quantization distortion associated with the levels versus the data points and the rate associated with transmitting the encoded adaptive reconstruction levels. The methods relate to data compression in a range of applications including audio, images and video.
摘要翻译：提出了使用自适应重建级别执行量化的编码和解码方法。可以基于由分区定义的每个子部分内的数据点的分布来选择数据空间的给定划分的重建级别。在一些情况下，自适应重建级别可以基于每个子部分内的数据点的平均值。在一些情况下，可以使用包括与电平相对于数据点相关联的量化失真的速率失真分析以及与发送编码的自适应重建级别相关联的速率来选择自适应重建级别。该方法涉及包括音频，图像和视频在内的一系列应用中的数据压缩。

6. 发明申请

WO2011088577A1 SYSTEM AND METHOD FOR ENCODING AND DECODING PULSE INDICES 审中-公开
标题翻译：编码和解码脉冲指标的系统和方法
公开(公告)号：WO2011088577A1
公开(公告)日：2011-07-28
申请号：PCT/CA2011/050036
申请日：2011-01-21
申请人： RESEARCH IN MOTION LIMITED , YU, Xiang , HE, Dake , YANG, En-Hui
发明人： YU, Xiang , HE, Dake , YANG, En-Hui
IPC分类号： G10L19/08 , G10L19/12
CPC分类号： G10L19/12 , G10L2019/0007
摘要： Methods and corresponding codec-containing devices are provided that have source coding schemes for encoding a component of an excitation. In some cases, the source coding scheme is an enumerative source coding scheme, while in other cases the source coding scheme is an arithmetic source coding scheme. In some cases, the source coding schemes are applied to encode a fixed codebook component of the excitation for a codec employing codebook excited linear prediction, for example an AMR-WB (Adaptive Multi-Rate - Wideband) speech codec.
摘要翻译：提供了具有用于编码激励分量的源编码方案的方法和相应的编解码器装置。在一些情况下，源编码方案是枚举源编码方案，而在其他情况下，源编码方案是算术源编码方案。在一些情况下，源编码方案被应用于编码采用码本激励线性预测的编解码器的激励的固定码本分量，例如AMR-WB（自适应多速率 - 宽带）语音编解码器。

7. 发明申请

WO2010091505A1 MODIFIED ENTROPY ENCODING FOR IMAGES AND VIDEOS 审中-公开
标题翻译：用于图像和视频的修改的入侵编码
公开(公告)号：WO2010091505A1
公开(公告)日：2010-08-19
申请号：PCT/CA2010/000181
申请日：2010-02-12
申请人： RESEARCH IN MOTION LIMITED , YU, Xiang , HE, Dake , YANG, En-Hui
发明人： YU, Xiang , HE, Dake , YANG, En-Hui
IPC分类号： H04N7/50
CPC分类号： H04N21/2383 , H04N19/117 , H04N19/124 , H04N19/129 , H04N19/13 , H04N19/134 , H04N19/14 , H04N19/154 , H04N19/176 , H04N19/18 , H04N19/82 , H04N19/86 , H04N19/91 , H04N21/4382 , H04N21/8543
摘要： A method and encoder for entropy encoding image data using a dynamically determined coding order, and a method and decoder for entropy decoding encoded data encoded using a dynamically determined coding order. The coding order for encoding quantized transform domain coefficients is dynamically determined for the image based on at least one characteristic of the quantized transform domain coefficients. The characteristic may be quantization step size if non-uniform quantization is employed for blocks of data.
摘要翻译：一种用于使用动态确定的编码顺序对图像数据进行熵编码的方法和编码器，以及用于熵解码使用动态确定的编码顺序编码的编码数据的方法和解码器。基于量化的变换域系数的至少一个特性，动态地为图像动态地确定编码量化的变换域系数的编码顺序。如果对数据块采用非均匀量化，则该特性可以是量化步长。

8. 发明申请

WO2010091503A1 ADAPTIVE QUANTIZATION WITH BALANCED PIXEL-DOMAIN DISTORTION DISTRIBUTION IN IMAGE PROCESSING 审中-公开
标题翻译：图像处理中平衡像素域分布分布的自适应量化
公开(公告)号：WO2010091503A1
公开(公告)日：2010-08-19
申请号：PCT/CA2010/000179
申请日：2010-02-10
申请人： RESEARCH IN MOTION LIMITED , YU, Xiang , HE, Dake , YANG, En-Hui
发明人： YU, Xiang , HE, Dake , YANG, En-Hui
IPC分类号： G06T9/00 , H04N7/50
CPC分类号： H04N19/14 , H04N19/124 , H04N19/147 , H04N19/154 , H04N19/18 , H04N19/61
摘要： Methods and encoders and decoders for adaptively quantizing transform domain coefficients in image and/or video encoding/decoding. For an image having a number of blocks, each block having N coefficients, the quantization step size for each coefficient is selected dynamically, thus resulting in a quantizer that may apply different step sizes to different coefficients. The selected step sizes for each coefficient are used for those coefficients within all blocks in the image/frame. In one aspect, the step sizes are selected on the basis of balancing pixel domain distortion when the image/frame is decoded.
摘要翻译：用于自适应地量化图像和/或视频编码/解码中的变换域系数的方法和编码器和解码器。对于具有多个块的图像，每个块具有N个系数，动态地选择每个系数的量化步长，从而得到量化器，该量化器可以将不同的步长应用于不同的系数。每个系数的所选步长被用于图像/帧中所有块内的那些系数。在一个方面中，在解码图像/帧时平衡像素域失真来选择步长。

9. 发明申请

WO2012034231A1 METHODS AND DEVICES FOR DATA COMPRESSION WITH ADAPTIVE FILTERING IN THE TRANSFORM DOMAIN 审中-公开
标题翻译：用于在变换域中进行自适应滤波的数据压缩的方法和设备
公开(公告)号：WO2012034231A1
公开(公告)日：2012-03-22
申请号：PCT/CA2011/050559
申请日：2011-09-14
申请人： RESEARCH IN MOTION LIMITED , YU, Xiang , HE, Dake , YANG, En-hui
发明人： YU, Xiang , HE, Dake , YANG, En-hui
IPC分类号： H04N7/50
CPC分类号： H04N19/82 , H04N19/117 , H04N19/136 , H04N19/147 , H04N19/172 , H04N19/18 , H04N19/19 , H04N19/196 , H04N19/463 , H04N19/48 , H04N19/51 , H04N19/61 , H04N19/70
摘要： Methods and devices for encoding and decoding data using adaptive 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 quantized transform domain coefficients. Rate-distortion optimization may be used to determine the optimal filter coefficients on a frame-based, coding-unit-basis, or other basis.
摘要翻译：描述了使用自适应变换域过滤对数据进行编码和解码的方法和装置。编码器确定要应用于变换域预测的一组变换域滤波器系数。在一些情况下，滤波也可以应用于量化的变换域系数。可以使用速率失真优化来确定基于帧，基于编码单位或其它基础的最佳滤波器系数。

10. 发明申请

WO2012113055A1 METHODS AND DEVICES FOR DATA COMPRESSION USING OFFSET-BASED ADAPTIVE RECONSTRUCTION LEVELS 审中-公开
标题翻译：使用基于偏移的自适应重建级别进行数据压缩的方法和设备
公开(公告)号：WO2012113055A1
公开(公告)日：2012-08-30
申请号：PCT/CA2011/050350
申请日：2011-06-08
申请人： RESEARCH IN MOTION LIMITED , HE, Dake , YU, Xiang , WANG, Jing , YANG, En-hui
发明人： HE, Dake , YU, Xiang , WANG, Jing , YANG, En-hui
IPC分类号： H03M7/30 , H04N7/50
CPC分类号： H04N19/124 , H04N19/147 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/177 , H04N19/192 , H04N19/194 , H04N19/196 , H04N19/463 , H04N19/61 , H04N19/70
摘要： Encoding and decoding methods are presented that used offset-based adaptive reconstruction levels. The offset data is inserted in the bitstream with the encoded video data. The offset data may be differential data and may be an index to an array of offset values from which the differential offset is calculated by the decoder. The offset to an adaptive reconstruction level may be adjusted for each slice. The offsets may be specific to a particular level/index and data type. In some cases, offsets may only be sent for a subset of the levels. Higher levels may apply no offset, may apply an average offset, or may apply the offset used for the highest level having a level- specific offset.
摘要翻译：提出了使用基于偏移的自适应重建级别的编码和解码方法。偏移数据被插入到具有编码视频数据的比特流中。偏移数据可以是差分数据，并且可以是由解码器计算差分偏移的偏移值的阵列的索引。可以针对每个切片调整对自适应重建级别的偏移。偏移量可能特定于特定级别/索引和数据类型。在某些情况下，偏移量只能发送给子集的级别。更高的等级可以不应用偏移量，可以应用平均偏移量，或者可以应用用于具有水平特定偏移量的最高级别的偏移量。

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