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    • 4. 发明申请
    • Compressing signals using serially-concatenated accumulate codes
    • 使用串行级联代码压缩信号
    • US20060048038A1
    • 2006-03-02
    • US10928448
    • 2004-08-27
    • Jonathan YedidiaAnthony VetroAshish KhistiDmitry Malioutov
    • Jonathan YedidiaAnthony VetroAshish KhistiDmitry Malioutov
    • H03M13/03
    • H03M7/30H03M13/00H03M13/03H03M13/1194H03M13/19H03M13/6312
    • A method compresses a set of correlated signals by first converting each signal to a sequence of integers, which are further organized as a set of bit-planes. This can be done by signal transformation and quantization. An inverse accumulator is applied to each bit-plane to produce a bit-plane of shifted bits, which are permuted according to a predetermined permutation to produce bit-planes of permuted bits. Each bit-plane of permuted bits is partitioned into a set of blocks of bits. Syndrome bits are generated for each block of bits according to a rate-adaptive base code. Subsequently, the syndrome bits can be decompressed in a decoder to recover the original correlated signals. For each bit-plane of the corresponding signal, a bit probability estimate is generated. Then, the bit-plane is reconstructed using the syndrome bits and the bit probability estimate. The sequence of integers corresponding to all of the bit-planes can then be reconstructed from the bit probability estimates, and the original signal can be recovered from the sequences of integers using an inverse quantization and inverse transform.
    • 一种方法通过首先将每个信号转换成整数序列来压缩一组相关信号,该整数序列进一步被组织为一组位平面。 这可以通过信号变换和量化来完成。 反向累加器被施加到每个位平面以产生位移位的位平面,它们根据预定的排列被排列以产生置换位的位平面。 置换位的每个位平面被划分成一组位块。 根据速率自适应基本码为每个位块产生综合位。 随后,可以在解码器中解压缩校正子位以恢复原始的相关信号。 对于相应信号的每个位平面,产生位概率估计。 然后,使用校正子位和位概率估计来重构位平面。 然后可以从比特概率估计中重构对应于所有比特平面的整数序列,并且可以使用逆量化和逆变换从整数序列中恢复原始信号。
    • 5. 发明授权
    • Method for enhancing depth images of scenes using trellis structures
    • 使用网格结构增强场景深度图像的方法
    • US08994722B2
    • 2015-03-31
    • US13406139
    • 2012-02-27
    • Dong TianYongzhe WangAnthony Vetro
    • Dong TianYongzhe WangAnthony Vetro
    • G06T15/20
    • G06T15/205
    • An image for a virtual view of a scene is generated based on a set of texture images and a corresponding set of depth images acquired of the scene. A set of candidate depths associated with each pixel of a selected image is determined. For each candidate depth, a cost that estimates a synthesis quality of the virtual image is determined. The candidate depth with a least cost is selected to produce an optimal depth for the pixel. Then, the virtual image is synthesized based on the optimal depth of each pixel and the texture images. The method also applies first and second depth enhancement before, and during view synthesis to correct errors or suppress noise due to the estimation or acquisition of the dense depth images and sparse depth features.
    • 基于一组纹理图像和从该场景获取的对应的一组深度图像来生成用于场景的虚拟视图的图像。 确定与所选图像的每个像素相关联的一组候选深度。 对于每个候选深度,确定估计虚拟图像的合成质量的成本。 选择具有最低成本的候选深度以产生像素的最佳深度。 然后,基于每个像素的最佳深度和纹理图像合成虚拟图像。 该方法还在视图合成之前和视图合成期间都应用第一和第二深度增强,以校正误差或抑制由于估计或获取密集深度图像和稀疏深度特征而导致的噪声。
    • 6. 发明授权
    • Method for selecting transform types from mapping table for prediction modes
    • 从预测模式的映射表中选择变换类型的方法
    • US08929455B2
    • 2015-01-06
    • US13175737
    • 2011-07-01
    • Robert A. CohenAnthony Vetro
    • Robert A. CohenAnthony Vetro
    • H04N7/12H04N19/102H04N19/10H04N19/12H04N19/159H04N19/61H04N19/11
    • H04N7/52H04N19/10H04N19/11H04N19/12H04N19/122H04N19/159H04N19/60H04N19/61
    • A method codes pictures in a bitstream, wherein the bitstream includes coded pictures to obtain data for associated TUs and data for generating a transform tree, and a partitioning of coding units (CUs) into Prediction Units (PUs), and data for obtaining prediction modes or directions associated with each PU. One or more mapping tables are defined, wherein each row of each table has an associated index and a first set of transform types to be used for applying an inverse transformation to the data in TU. The first set of transform types is selected according to an index, and then a second set of transform types is applied as the inverse transformation to the data, wherein the second set of transform types is determined according to the first set of transform types and a transform-toggle flag (ttf) to obtain a reconstructed prediction residual.
    • 一种方法对比特流中的图像进行编码,其中比特流包括用于获得相关联的TU的数据的编码图像和用于生成变换树的数据,以及将编码单元(CU)划分为预测单元(PU)和用于获得预测模式的数据 或与每个PU相关联的方向。 定义一个或多个映射表,其中每个表的每一行具有相关联的索引和用于将逆变换应用于TU中的数据的第一组变换类型。 根据索引选择第一组变换类型,然后应用第二组变换类型作为数据的逆变换,其中根据第一组变换类型确定第二组变换类型,并且a 变换切换标志(ttf)以获得重建的预测残差。
    • 7. 发明授权
    • Method for coding videos using dictionaries
    • 使用字典编码视频的方法
    • US08767835B2
    • 2014-07-01
    • US12979414
    • 2010-12-28
    • Robert A. CohenJewon KangAnthony Vetro
    • Robert A. CohenJewon KangAnthony Vetro
    • H04N7/50H04N7/26H04N7/32H04N7/30
    • H04N19/97H04N19/102H04N19/105H04N19/122H04N19/147H04N19/157H04N19/176H04N19/46
    • A video encoded as a bit stream is decoded by maintaining a set of dictionaries generated from decoded prediction residual signals, wherein elements of the set of dictionaries have associated indices. A current macroblock is entropy decoded and inverse quantized to produce decoded coefficients. For the current macroblock, a particular dictionary of the set of dictionaries is selected according to a prediction mode signaled in the bit stream, and particular elements of the particular dictionary are selected according to a copy mode signal in the bit stream and the associated index. The particular elements is scaled and combined, using the decoded coefficients, to reconstruct a current decoded macroblock prediction residual signal. Then, the current decoded macroblock prediction residual signal is combined with previously decoded macroblocks to generate an output macroblock of a reconstructed video, wherein the steps are performed in a decoder.
    • 通过维持从解码的预测残差信号产生的一组字典来解码编码为比特流的视频,其中字典集合中的元素具有相关联的索引。 当前宏块被熵解码并被反量化以产生解码系数。 对于当前的宏块,根据在位流中发信号的预测模式来选择字典集合的特定字典,并且根据位流中的复制模式信号和相关联的索引来选择特定字典的特定元素。 使用解码的系数对特定元素进行缩放和组合,以重构当前解码的宏块预测残差信号。 然后,将当前解码的宏块预测残差信号与先前解码的宏块相组合以产生重构视频的输出宏块,其中在解码器中执行这些步骤。