公开(公告)号：US20090003457A1

公开(公告)日：2009-01-01

申请号：US11768434

申请日：2007-06-26

申请人： Shan Liu ,  Anthony Vetro ,  Woo-Shik Kim

发明人： Shan Liu ,  Anthony Vetro ,  Woo-Shik Kim

IPC分类号： H04N7/26

CPC分类号： H04N19/36 ,  H04N19/105 ,  H04N19/126 ,  H04N19/134 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/593

摘要： A method performs inverse tone mapping of an image in a decoder. For each block of each color channel of the image the following steps are performed. A scaling factor is determined for a current block of the image by adding a predicted scaling factor for the current block to a difference between the predicted scaling factor and the scaling factor of an adjacent block. An offset value for the current block is determined by adding a predicted offset for the current block to a difference between the predicted offset value and the offset value of the adjacent block. The scaling factor and the offset value are applied to pixel intensity values of the current block to produce a mapped block in which a bit-depth of the mapped block is greater than the bit-depth of the current block.

摘要翻译： 一种方法对解码器中的图像执行逆色调映射。 对于图像的每个颜色通道的每个块，执行以下步骤。 通过将当前块的预测缩放因子添加到预测缩放因子和相邻块的缩放因子之间的差异来为图像的当前块确定缩放因子。 通过将当前块的预测偏移量加到预测偏移值和相邻块的偏移值之间的差值来确定当前块的偏移值。 缩放因子和偏移值被应用于当前块的像素强度值，以产生其中映射块的位深大于当前块的位深度的映射块。

公开(公告)号：US08085852B2

公开(公告)日：2011-12-27

申请号：US11768434

申请日：2007-06-26

申请人： Shan Liu ,  Anthony Vetro ,  Woo-Shik Kim

发明人： Shan Liu ,  Anthony Vetro ,  Woo-Shik Kim

IPC分类号： H04N11/02 ,  H04B1/66 ,  H04B14/00

CPC分类号： H04N19/36 ,  H04N19/105 ,  H04N19/126 ,  H04N19/134 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/593

摘要： A method performs inverse tone mapping of an image in a decoder. For each block of each color channel of the image the following steps are performed. A scaling factor is determined for a current block of the image by adding a predicted scaling factor for the current block to a difference between the predicted scaling factor and the scaling factor of an adjacent block. An offset value for the current block is determined by adding a predicted offset for the current block to a difference between the predicted offset value and the offset value of the adjacent block. The scaling factor and the offset value are applied to pixel intensity values of the current block to produce a mapped block in which a bit-depth of the mapped block is greater than the bit-depth of the current block.

摘要翻译： 一种方法对解码器中的图像执行逆色调映射。 对于图像的每个颜色通道的每个块，执行以下步骤。 通过将当前块的预测缩放因子添加到预测缩放因子和相邻块的缩放因子之间的差异来为图像的当前块确定缩放因子。 通过将当前块的预测偏移量加到预测偏移值和相邻块的偏移值之间的差值来确定当前块的偏移值。 缩放因子和偏移值被应用于当前块的像素强度值，以产生其中映射块的位深大于当前块的位深度的映射块。

公开(公告)号：US20090267825A1

公开(公告)日：2009-10-29

申请号：US12110834

申请日：2008-04-28

申请人： Anthony Vetro ,  Shan Liu ,  Jian Lou ,  Stephen R. Burgess

发明人： Anthony Vetro ,  Shan Liu ,  Jian Lou ,  Stephen R. Burgess

IPC分类号： G01S13/90

CPC分类号： G01S13/90 ,  G01S7/003 ,  H03M7/30 ,  H03M7/4006

摘要： A method compresses synthetic aperture radar (SAR) data by sampling the SAR data into blocks and transforming each block to a corresponding block of transform coefficients. Each block of transform coefficient is quantized according to a quantization parameter to obtain a corresponding block of quantized transform coefficients, which are demultiplexed into sets of blocks of quantized transform coefficients. The quantized transform coefficients in the blocks in each set are arithmetically encoding in parallel according to a probability model to produce an intermediate bitstream for each set of blocks. The encoding of the quantized transform coefficients of one block is independent of the quantized transform coefficients of a successive block. The intermediate of bitstreams are then multiplexed to a compressed bitstream, which can be transmitted, or stored, for subsequent decoding to construct an SAR image.

摘要翻译： 一种方法通过将SAR数据采样到块中并将每个块变换成相应的变换系数块来压缩合成孔径雷达（SAR）数据。 每个变换系数块根据量化参数进行量化，以获得量化变换系数的相应块，其被解复用为量化变换系数块集合。 每组中的块中的量化变换系数根据概率模型并行地进行算术编码，以产生每组块的中间比特流。 一个块的量化变换系数的编码与连续块的量化变换系数无关。 然后将比特流的中间复用到可以被传输或存储的压缩比特流，以便后续解码以构建SAR图像。

公开(公告)号：US20090003718A1

公开(公告)日：2009-01-01

申请号：US12039007

申请日：2008-02-28

申请人： Shan Liu ,  Anthony Vetro

发明人： Shan Liu ,  Anthony Vetro

IPC分类号： G06K9/46 ,  G09G5/02

CPC分类号： H04N19/36 ,  H04N19/102 ,  H04N19/126 ,  H04N19/17 ,  H04N19/176 ,  H04N19/186 ,  H04N19/30 ,  H04N19/46 ,  H04N19/61

摘要： A method performs inverse tone mapping of an image in a decoder. For each block of each color channel of the image a scaling factor is determined by adding a predicted scaling factor for the current block to a difference between the predicted scaling factor and the scaling factor of an adjacent block. An offset value for the current block is determined by adding a predicted offset for the current block to a difference between the predicted offset value and the offset value of the adjacent block. The scaling factor and the offset value are applied to pixel intensity values of the current block to produce a mapped block. The inverse tone mapping can also be applied to blocks of different sizes.

摘要翻译： 一种方法对解码器中的图像执行逆色调映射。 对于图像的每个颜色通道的每个块，通过将当前块的预测缩放因子添加到预测缩放因子和相邻块的缩放因子之间的差来确定缩放因子。 通过将当前块的预测偏移量加到预测偏移值和相邻块的偏移值之间的差值来确定当前块的偏移值。 缩放因子和偏移值被应用于当前块的像素强度值以产生映射块。 逆音调映射也可以应用于不同大小的块。

公开(公告)号：US07983496B2

公开(公告)日：2011-07-19

申请号：US12039007

申请日：2008-02-28

申请人： Shan Liu ,  Anthony Vetro

发明人： Shan Liu ,  Anthony Vetro

IPC分类号： G06K9/36

CPC分类号： H04N19/36 ,  H04N19/102 ,  H04N19/126 ,  H04N19/17 ,  H04N19/176 ,  H04N19/186 ,  H04N19/30 ,  H04N19/46 ,  H04N19/61

摘要： A method performs inverse tone mapping of an image in a decoder. For each block of each color channel of the image a scaling factor is determined by adding a predicted scaling factor for the current block to a difference between the predicted scaling factor and the scaling factor of an adjacent block. An offset value for the current block is determined by adding a predicted offset for the current block to a difference between the predicted offset value and the offset value of the adjacent block. The scaling factor and the offset value are applied to pixel intensity values of the current block to produce a mapped block. The inverse tone mapping can also be applied to blocks of different sizes.

摘要翻译： 一种方法对解码器中的图像执行逆色调映射。 对于图像的每个颜色通道的每个块，通过将当前块的预测缩放因子添加到预测缩放因子和相邻块的缩放因子之间的差来确定缩放因子。 通过将当前块的预测偏移量加到预测偏移值和相邻块的偏移值之间的差值来确定当前块的偏移值。 缩放因子和偏移值被应用于当前块的像素强度值以产生映射块。 逆音调映射也可以应用于不同大小的块。

公开(公告)号：US07876257B2

公开(公告)日：2011-01-25

申请号：US12110834

申请日：2008-04-28

申请人： Anthony Vetro ,  Shan Liu ,  Jian Lou ,  Stephen R. Burgess

发明人： Anthony Vetro ,  Shan Liu ,  Jian Lou ,  Stephen R. Burgess

IPC分类号： G01S13/90

CPC分类号： G01S13/90 ,  G01S7/003 ,  H03M7/30 ,  H03M7/4006

摘要： A method compresses synthetic aperture radar (SAR) data by sampling the SAR data into blocks and transforming each block to a corresponding block of transform coefficients. Each block of transform coefficient is quantized according to a quantization parameter to obtain a corresponding block of quantized transform coefficients, which are demultiplexed into sets of blocks of quantized transform coefficients. The quantized transform coefficients in the blocks in each set are arithmetically encoding in parallel according to a probability model to produce an intermediate bitstream for each set of blocks. The encoding of the quantized transform coefficients of one block is independent of the quantized transform coefficients of a successive block. The intermediate of bitstreams are then multiplexed to a compressed bitstream, which can be transmitted, or stored, for subsequent decoding to construct an SAR image.

摘要翻译： 一种方法通过将SAR数据采样到块中并将每个块变换成相应的变换系数块来压缩合成孔径雷达（SAR）数据。 根据量化参数对变换系数的每个块进行量化，以获得相应的量化变换系数块，其被解复用为量化变换系数块集合。 每组中块中的量化变换系数根据概率模型并行进行算术编码，以产生每组块的中间比特流。 一个块的量化变换系数的编码与连续块的量化变换系数无关。 然后将比特流的中间复用到可以被发送或存储的压缩比特流，以便后续解码以构建SAR图像。

公开(公告)号：US08994722B2

公开(公告)日：2015-03-31

申请号：US13406139

申请日：2012-02-27

申请人： Dong Tian ,  Yongzhe Wang ,  Anthony Vetro

发明人： Dong Tian ,  Yongzhe Wang ,  Anthony Vetro

IPC分类号： G06T15/20

CPC分类号： G06T15/205

摘要： 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.

摘要翻译： 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。

公开(公告)号：US08929455B2

公开(公告)日：2015-01-06

申请号：US13175737

申请日：2011-07-01

申请人： Robert A. Cohen ,  Anthony Vetro

发明人： Robert A. Cohen ,  Anthony Vetro

IPC分类号： H04N7/12 ,  H04N19/102 ,  H04N19/10 ,  H04N19/12 ,  H04N19/159 ,  H04N19/61 ,  H04N19/11

CPC分类号： H04N7/52 ,  H04N19/10 ,  H04N19/11 ,  H04N19/12 ,  H04N19/122 ,  H04N19/159 ,  H04N19/60 ,  H04N19/61

摘要： 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.

摘要翻译： 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。

公开(公告)号：US08767835B2

公开(公告)日：2014-07-01

申请号：US12979414

申请日：2010-12-28

申请人： Robert A. Cohen ,  Jewon Kang ,  Anthony Vetro

发明人： Robert A. Cohen ,  Jewon Kang ,  Anthony Vetro

IPC分类号： H04N7/50 ,  H04N7/26 ,  H04N7/32 ,  H04N7/30

CPC分类号： H04N19/97 ,  H04N19/102 ,  H04N19/105 ,  H04N19/122 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/46

摘要： 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.

摘要翻译： 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。

公开(公告)号：US08494290B2

公开(公告)日：2013-07-23

申请号：US13169959

申请日：2011-06-27

申请人： Robert A. Cohen ,  Anthony Vetro ,  Huifang Sun

发明人： Robert A. Cohen ,  Anthony Vetro ,  Huifang Sun

IPC分类号： G06K9/36

CPC分类号： G06T9/40 ,  H04N19/119 ,  H04N19/122 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

摘要： A bitstream includes coded pictures, and split-flags for generating a transform tree. The bit stream is a partitioning of coding units (CUs) into Prediction Units (PUs). The transform tree is generated according to the split-flags. Nodes in the transform tree represent transform units (TU) associated with the CUs. The generation splits each TU only if the corresponding split-flag is set. For each PU that includes multiple TUs, the multiple TUs are merged into a larger TU, and the transform tree is modified according to the splitting and merging. Then, data contained in each PU can be decoded using the TUs associated with the PU according to the transform tree.

摘要翻译： 比特流包括编码图像，以及用于生成变换树的分割标志。 比特流是将编码单元（CU）划分成预测单元（PU）。 转换树根据分裂标志生成。 变换树中的节点表示与CU相关联的变换单元（TU）。 仅当相应的分割标志被设置时，该代码才能分割每个TU。 对于包含多个TU的每个PU，将多个TU合并成一个较大的TU，根据分割和合并修改变换树。 然后，可以使用根据变换树与PU相关联的TU来解码包含在每个PU中的数据。