专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08665964B2 Video coding based on first order prediction and pre-defined second order prediction mode 有权
标题翻译：基于一阶预测和预定义二阶预测模式的视频编码
公开(公告)号：US08665964B2
公开(公告)日：2014-03-04
申请号：US12495613
申请日：2009-06-30
申请人： Rajan L. Joshi , Peisong Chen , Marta Karczewicz
发明人： Rajan L. Joshi , Peisong Chen , Marta Karczewicz
IPC分类号： H04N7/18
CPC分类号： H04N19/567 , H04N19/102 , H04N19/105 , H04N19/109 , H04N19/11 , H04N19/147 , H04N19/176 , H04N19/61
摘要： This disclosure describes video encoding and decoding techniques in which a first order prediction process and a second order prediction process are used in combination to generate predictive video blocks for video coding. First order prediction may be similar to conventional motion estimation and motion compensation that generates residual video blocks. The second order prediction may involve a process similar to conventional intra-prediction, but is performed on the residual video blocks. The techniques of this disclosure may pre-define the second order prediction to a specific mode, such as a mode similar to the intra-DC mode used in intra coding. In addition, the techniques of this disclosure may combine aspects of the first order and second order prediction into a single process so that the effects of second order prediction on the residuals are taken into account during the first order prediction process, which may improve compression.
摘要翻译：本公开描述了视频编码和解码技术，其中组合使用一阶预测处理和二阶预测处理以产生用于视频编码的预测视频块。第一阶预测可以类似于产生残余视频块的常规运动估计和运动补偿。二阶预测可以涉及与常规帧内预测类似的处理，但是对剩余视频块执行。本公开的技术可以预定义到特定模式的二阶预测，例如类似于帧内编码中使用的DC内模式的模式。此外，本公开的技术可以将一阶和二阶预测的方面组合成单个过程，使得在第一阶预测过程期间考虑二阶预测对残差的影响，这可以改善压缩。

2. 发明申请

US20120008682A1 VIDEO CODING USING DIRECTIONAL TRANSFORMS 有权
标题翻译：使用方向变换的视频编码
公开(公告)号：US20120008682A1
公开(公告)日：2012-01-12
申请号：US13178427
申请日：2011-07-07
申请人： Marta Karczewicz , Muhammed Zeyd Coban , Peisong Chen , Hsiao-Chiang Chuang , Rajan L. Joshi
发明人： Marta Karczewicz , Muhammed Zeyd Coban , Peisong Chen , Hsiao-Chiang Chuang , Rajan L. Joshi
IPC分类号： H04N7/32
CPC分类号： H04N19/61 , H04N19/11 , H04N19/122 , H04N19/129 , H04N19/13 , H04N19/132 , H04N19/14 , H04N19/157 , H04N19/159 , H04N19/176 , H04N19/194 , H04N19/196 , H04N19/46 , H04N19/593 , H04N19/60 , H04N19/85 , H04N19/96
摘要： In one example, an apparatus for encoding video data includes a video encoder configured to calculate a residual block for a block of video data based on a predicted block formed using an intra-prediction mode, and transform the residual block using a transform mapped from the intra-prediction mode. In another example, an apparatus includes video encoder configured to receive an indication of a first intra-prediction mode in a first set of intra-prediction modes for a block of video data, determine a second intra-prediction mode from a second set of intra-prediction modes, smaller than the first set of intra-prediction modes, to which the first intra-prediction mode is mapped, determine a directional transform to which the second intra-prediction mode is mapped, and apply the directional transform to residual data of the block.
摘要翻译：在一个示例中，用于对视频数据进行编码的装置包括视频编码器，被配置为基于使用帧内预测模式形成的预测块来计算视频数据块的残差块，并且使用从帧内预测模式。在另一示例中，一种装置包括视频编码器，其被配置为在视频数据块的第一组帧内预测模式中接收第一帧内预测模式的指示，从第二组帧内预测模式中确定第二帧内预测模式小于第一帧内预测模式映射的第一组帧内预测模式的预测模式确定映射了第二帧内预测模式的方向变换，并将定向变换应用于块。

3. 发明申请

US20110200109A1 FIXED POINT IMPLEMENTATION FOR GEOMETRIC MOTION PARTITIONING 有权
标题翻译：用于几何运动分配的固定点实现
公开(公告)号：US20110200109A1
公开(公告)日：2011-08-18
申请号：US13012126
申请日：2011-01-24
申请人： Rajan L. Joshi , Peisong Chen , Marta Karczewicz
发明人： Rajan L. Joshi , Peisong Chen , Marta Karczewicz
IPC分类号： H04N7/26
CPC分类号： H04N19/615 , H04N19/119 , H04N19/122 , H04N19/137 , H04N19/17 , H04N19/174 , H04N19/176 , H04N19/513 , H04N19/52 , H04N19/537 , H04N19/543 , H04N19/66
摘要： In one example, an apparatus includes a video encoder configured to partition a block of video data into a first partition and a second partition using a geometric motion partition line, calculate a slope value and a y-intercept value of the geometric motion partition line, wherein the slope value and the y-intercept value comprise integer values, calculate a mask indicative of pixels of the block in the first partition and pixels of the block in the second partition, encode the first partition and the second partition based on the mask, and output the encoded first partition, the encoded second partition, the slope value, and the y-intercept value. This may allow for a fixed point implementation. A video decoder may receive the slope and y-intercept values to calculate the mask and decode the block based on the mask.
摘要翻译：在一个示例中，一种装置包括视频编码器，其被配置为使用几何运动分割线将视频数据块划分为第一分区和第二分区，计算几何运动分割线的斜率值和y截距值，其中所述斜率值和所述y截距值包括整数值，计算指示所述第一分区中的块的像素的掩模和所述第二分区中的块的像素，基于所述掩码对所述第一分区和所述第二分区进行编码，并输出编码的第一分区，编码的第二分区，斜率值和y截距值。这可能允许固定点实现。视频解码器可以接收斜率和y截距值以计算掩码并基于掩码解码块。

4. 发明申请

US20110200108A1 CHROMINANCE HIGH PRECISION MOTION FILTERING FOR MOTION INTERPOLATION 审中-公开
标题翻译：用于运动插值的高精度运动滤波
公开(公告)号：US20110200108A1
公开(公告)日：2011-08-18
申请号：US13011634
申请日：2011-01-21
申请人： Rajan L. Joshi , Peisong Chen , Marta Karczewicz
发明人： Rajan L. Joshi , Peisong Chen , Marta Karczewicz
IPC分类号： H04N7/26
CPC分类号： H04N19/523 , H04N19/186 , H04N19/513 , H04N19/61
摘要： A video coding unit may be configured to encode or decode chrominance blocks of video data by reusing motion vectors for corresponding luminance blocks. A motion vector may have greater precision for chrominance blocks than luminance blocks, due to downsampling of chrominance blocks relative to corresponding luminance blocks. The video coding unit may interpolate values for a reference chrominance block by selecting interpolation filters based on the position of the pixel position pointed to by the motion vector. For example, a luminance motion vector may have one-quarter-pixel precision and a chrominance motion vector may have one-eighth-pixel precision. There may be interpolation filters associated with the quarter-pixel precisions. The video coding unit may use interpolation filters either corresponding to the pixel position or neighboring pixel positions to interpolate a value for the pixel position pointed to by the motion vector.
摘要翻译：视频编码单元可以被配置为通过重新使用对应的亮度块的运动矢量来对视频数据的色度块进行编码或解码。由于色度块相对于对应亮度块的下采样，运动矢量可能具有比亮度块更高的色度块精度。视频编码单元可以通过基于由运动矢量指向的像素位置的位置来选择内插滤波器来内插参考色度块的值。例如，亮度运动矢量可以具有四分之一像素精度，并且色度运动矢量可以具有八分之一像素的精度。可以存在与四分之一像素精度相关联的内插滤波器。视频编码单元可以使用对应于像素位置或相邻像素位置的插值滤波器来内插由运动矢量指向的像素位置的值。

5. 发明申请

US20100329342A1 VIDEO CODING BASED ON FIRST ORDER PREDICTION AND PRE-DEFINED SECOND ORDER PREDICTION MODE 有权
标题翻译：基于一阶预测和预定义第二阶预测模式的视频编码
公开(公告)号：US20100329342A1
公开(公告)日：2010-12-30
申请号：US12495613
申请日：2009-06-30
申请人： Rajan L. Joshi , Peisong Chen , Marta Karczewicz
发明人： Rajan L. Joshi , Peisong Chen , Marta Karczewicz
IPC分类号： H04N7/32 , H04N7/26
CPC分类号： H04N19/567 , H04N19/102 , H04N19/105 , H04N19/109 , H04N19/11 , H04N19/147 , H04N19/176 , H04N19/61
摘要： This disclosure describes video encoding and decoding techniques in which a first order prediction process and a second order prediction process are used in combination to generate predictive video blocks for video coding. First order prediction may be similar to conventional motion estimation and motion compensation that generates residual video blocks. The second order prediction may involve a process similar to conventional intra-prediction, but is performed on the residual video blocks. The techniques of this disclosure may pre-define the second order prediction to a specific mode, such as a mode similar to the intra-DC mode used in intra coding. In addition, the techniques of this disclosure may combine aspects of the first order and second order prediction into a single process so that the effects of second order prediction on the residuals are taken into account during the first order prediction process, which may improve compression.
摘要翻译：本公开描述了视频编码和解码技术，其中组合使用一阶预测处理和二阶预测处理以产生用于视频编码的预测视频块。第一阶预测可以类似于产生残余视频块的常规运动估计和运动补偿。二阶预测可以涉及与常规帧内预测类似的处理，但是对剩余视频块执行。本公开的技术可以预定义到特定模式的二阶预测，例如类似于帧内编码中使用的DC内模式的模式。此外，本公开的技术可以将一阶和二阶预测的方面组合成单个过程，使得在第一阶预测过程期间考虑二阶预测对残差的影响，这可以改善压缩。

6. 发明授权

US08879632B2 Fixed point implementation for geometric motion partitioning 有权
标题翻译：几何运动分割的固定点实现
公开(公告)号：US08879632B2
公开(公告)日：2014-11-04
申请号：US13012126
申请日：2011-01-24
申请人： Rajan L. Joshi , Peisong Chen , Marta Karczewicz
发明人： Rajan L. Joshi , Peisong Chen , Marta Karczewicz
IPC分类号： H04N7/12 , H04B1/66 , H04N11/02 , H04N11/04 , H04N19/17 , H04N19/119 , H04N19/543 , H04N19/51 , H04N19/122 , H04N19/137
CPC分类号： H04N19/615 , H04N19/119 , H04N19/122 , H04N19/137 , H04N19/17 , H04N19/174 , H04N19/176 , H04N19/513 , H04N19/52 , H04N19/537 , H04N19/543 , H04N19/66
摘要： In one example, an apparatus includes a video encoder configured to partition a block of video data into a first partition and a second partition using a geometric motion partition line, calculate a slope value and a y-intercept value of the geometric motion partition line, wherein the slope value and the y-intercept value comprise integer values, calculate a mask indicative of pixels of the block in the first partition and pixels of the block in the second partition, encode the first partition and the second partition based on the mask, and output the encoded first partition, the encoded second partition, the slope value, and the y-intercept value. This may allow for a fixed point implementation. A video decoder may receive the slope and y-intercept values to calculate the mask and decode the block based on the mask.
摘要翻译：在一个示例中，一种装置包括视频编码器，其被配置为使用几何运动分割线将视频数据块划分为第一分区和第二分区，计算几何运动分割线的斜率值和y截距值，其中所述斜率值和所述y截距值包括整数值，计算指示所述第一分区中的块的像素的掩模和所述第二分区中的块的像素，基于所述掩码对所述第一分区和所述第二分区进行编码，并输出编码的第一分区，编码的第二分区，斜率值和y截距值。这可能允许固定点实现。视频解码器可以接收斜率和y截距值以计算掩码并基于掩码解码块。

7. 发明申请

US20120014455A1 Variable Localized Bit-Depth Increase for Fixed-Point Transforms in Video Coding 有权
标题翻译：视频编码中定点变换的可变局部位深增加
公开(公告)号：US20120014455A1
公开(公告)日：2012-01-19
申请号：US13159063
申请日：2011-06-13
申请人： Rajan L. Joshi , Wei-Jung Chien , Marta Karczewicz , Yuriy Reznik , Peisong Chen , Hsiao-Chiang Chuang
发明人： Rajan L. Joshi , Wei-Jung Chien , Marta Karczewicz , Yuriy Reznik , Peisong Chen , Hsiao-Chiang Chuang
IPC分类号： H04N7/30
CPC分类号： H04N19/42 , H04N19/122 , H04N19/157 , H04N19/176 , H04N19/184 , H04N19/196 , H04N19/46 , H04N19/60 , H04N19/61
摘要： This disclosure describes techniques for mitigating rounding errors in a fixed-point transform associated with video coding by applying a variable localized bit-depth increase at the transform. More specifically, the techniques include selecting a constant value based on a size of a fixed-point transform in a video coding device and applying a variable localized bit-depth increase at the transform with a value equal to the constant value. Applying the variable localized bit-depth increase includes left-shifting a transform input signal by a number of bits equal to the constant value before the fixed-point transform, and right-shifting a transform output signal by a number of bits equal to the constant value after the fixed-point transform. The constant value is selected from a plurality of constant values stored on the video coding device. Each of the constant values is pre-calculated for one of a plurality of different transform sizes supported by the video coding.
摘要翻译：本公开描述了通过在变换处应用可变局部位深增加来减轻与视频编码相关联的定点变换中的舍入误差的技术。更具体地，这些技术包括基于视频编码装置中的定点变换的大小来选择常数值，并且在变换时以等于常数值的值应用可变的局部位深增加。应用可变局部位置深度增加包括将变换输入信号左移到等于定点变换之前的常数值的位数，并且将变换输出信号右移到等于常数的位数定点变换后的值。从存储在视频编码装置上的多个常数值中选择常数值。对于由视频编码支持的多个不同的变换大小之一，预先计算每个常数值。

8. 发明申请

US20120008683A1 SIGNALING SELECTED DIRECTIONAL TRANSFORM FOR VIDEO CODING 有权
标题翻译：用于视频编码的信号选择方向转换
公开(公告)号：US20120008683A1
公开(公告)日：2012-01-12
申请号：US13178434
申请日：2011-07-07
申请人： Marta Karczewicz , Muhammed Zeyd Coban , Peisong Chen , Hsiao-Chiang Chuang , Rajan L. Joshi
发明人： Marta Karczewicz , Muhammed Zeyd Coban , Peisong Chen , Hsiao-Chiang Chuang , Rajan L. Joshi
IPC分类号： H04N7/32
CPC分类号： H04N19/61 , H04N19/11 , H04N19/122 , H04N19/129 , H04N19/13 , H04N19/132 , H04N19/14 , H04N19/157 , H04N19/159 , H04N19/176 , H04N19/194 , H04N19/196 , H04N19/46 , H04N19/593 , H04N19/60 , H04N19/85 , H04N19/96
摘要： In one example, an apparatus for encoding video data includes a video encoder configured to select an intra-prediction mode to use to encode a block of video data, determine whether the block includes a sub-block of a size for which multiple transforms are possible based on the size of the sub-block and the selected intra-prediction mode, when the block includes the sub-block of the size for which multiple transforms are possible based on the size of the sub-block and the selected intra-prediction mode, select one of the multiple possible transforms, transform the sub-block using the selected one of the multiple possible transforms, and provide an indication of the selected one of the multiple possible transforms for the size of the block.
摘要翻译：在一个示例中，用于对视频数据进行编码的装置包括：视频编码器，被配置为选择帧内预测模式以用于对视频数据块进行编码，确定该块是否包括可能进行多次转换的大小的子块基于子块的大小和所选择的帧内预测模式，当该块包括基于子块的大小和所选择的帧内预测模式的可能的多个变换的大小的子块时，选择多个可能的变换之一，使用所选择的多个可能的变换中的一个来对子块进行变换，并且为块的大小提供所选择的多个可能变换中的一个的指示。

9. 发明授权

US09661338B2 Coding syntax elements for adaptive scans of transform coefficients for video coding 有权
公开(公告)号：US09661338B2
公开(公告)日：2017-05-23
申请号：US13178438
申请日：2011-07-07
申请人： Marta Karczewicz , Muhammed Zeyd Coban , Peisong Chen , Hsiao-Chiang Chuang , Rajan L. Joshi
发明人： Marta Karczewicz , Muhammed Zeyd Coban , Peisong Chen , Hsiao-Chiang Chuang , Rajan L. Joshi
IPC分类号： H04N19/194 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/196 , H04N19/13 , H04N19/122 , H04N19/129 , H04N19/61 , H04N19/96 , H04N19/593 , H04N19/11 , H04N19/132 , H04N19/14 , H04N19/157 , H04N19/60 , H04N19/85
CPC分类号： H04N19/61 , H04N19/11 , H04N19/122 , H04N19/129 , H04N19/13 , H04N19/132 , H04N19/14 , H04N19/157 , H04N19/159 , H04N19/176 , H04N19/194 , H04N19/196 , H04N19/46 , H04N19/593 , H04N19/60 , H04N19/85 , H04N19/96
摘要： In one example, an apparatus for encoding video data includes a video encoder configured to scan a two-dimensional block of transform coefficients to produce a one-dimensional vector of the transform coefficients, determine values indicative of whether the transform coefficients in the one-dimensional vector are significant; and entropy encode at least one of the values using a context model selected based on at least a percentage of significant coefficients in a predetermined number of the values encoded before the at least one of the values.

10. 发明授权

US09185422B2 Variable localized bit-depth increase for fixed-point transforms in video coding 有权
标题翻译：视频编码中定点变换的可变局部化位深增加
公开(公告)号：US09185422B2
公开(公告)日：2015-11-10
申请号：US13159063
申请日：2011-06-13
申请人： Rajan L. Joshi , Wei-Jung Chien , Marta Karczewicz , Yuriy Reznik , Peisong Chen , Hsiao-Chiang Chuang
发明人： Rajan L. Joshi , Wei-Jung Chien , Marta Karczewicz , Yuriy Reznik , Peisong Chen , Hsiao-Chiang Chuang
IPC分类号： H04N7/12 , H04N19/42 , H04N19/176 , H04N19/46 , H04N19/196 , H04N19/122 , H04N19/61 , H04N19/60 , H04N19/157 , H04N19/184
CPC分类号： H04N19/42 , H04N19/122 , H04N19/157 , H04N19/176 , H04N19/184 , H04N19/196 , H04N19/46 , H04N19/60 , H04N19/61
摘要： This disclosure describes techniques for mitigating rounding errors in a fixed-point transform associated with video coding by applying a variable localized bit-depth increase at the transform. More specifically, the techniques include selecting a constant value based on a size of a fixed-point transform in a video coding device and applying a variable localized bit-depth increase at the transform with a value equal to the constant value. Applying the variable localized bit-depth increase includes left-shifting a transform input signal by a number of bits equal to the constant value before the fixed-point transform, and right-shifting a transform output signal by a number of bits equal to the constant value after the fixed-point transform. The constant value is selected from a plurality of constant values stored on the video coding device. Each of the constant values is pre-calculated for one of a plurality of different transform sizes supported by the video coding.
摘要翻译：本公开描述了通过在变换处应用可变局部位深增加来减轻与视频编码相关联的定点变换中的舍入误差的技术。更具体地，这些技术包括基于视频编码装置中的定点变换的大小来选择常数值，并且在变换时以等于常数值的值应用可变的局部位深增加。应用可变局部位置深度增加包括将变换输入信号左移到等于定点变换之前的常数值的位数，并且将变换输出信号右移到等于常数的位数定点变换后的值。从存储在视频编码装置上的多个常数值中选择常数值。对于由视频编码支持的多个不同的变换大小之一，预先计算每个常数值。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式