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1. 发明授权

US09794555B2 Adaptive sampling filter process for scalable video coding 有权
公开(公告)号：US09794555B2
公开(公告)日：2017-10-17
申请号：US14213150
申请日：2014-03-14
申请人： General Instrument Corporation
发明人： David M Baylon , Ajay K Luthra , Koohyar Minoo
IPC分类号： H04N19/59 , H04N19/82 , H04N19/117 , H04N19/186 , H04N19/187 , H04N19/182 , H04N19/134 , H04N19/463 , H04N19/80 , H04N19/33
CPC分类号： H04N19/169 , H04N19/117 , H04N19/134 , H04N19/187 , H04N19/33 , H04N19/463 , H04N19/80
摘要： A sampling filter process for scalable video coding provides correction for phase shift occurring during downsampling. The process uses video data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system using adaptive phase shifting based on downsampling to improve quality. Examples of a multi-layers are MPEG-4 Advanced Video Coding (AVC) and High Efficiency Video Coding (HEVC). The re-sampled BL data can be used in higher layers in a scalable video coding system. For example, the re-sampled or upsampled data can be used as a basis for prediction of the higher resolution video data.

2. 发明申请

US20140369402A1 RE-SAMPLING FILTERS FOR SCALABLE VIDEO CODING 审中-公开
标题翻译：用于可扩展视频编码的再采样滤波器
公开(公告)号：US20140369402A1
公开(公告)日：2014-12-18
申请号：US14304399
申请日：2014-06-13
申请人： General Instrument Corporation
发明人： Koohyar Minoo , David M. Baylon
IPC分类号： H04N19/117 , H04N19/187 , H04N19/196
CPC分类号： H04N19/80 , H04N19/117 , H04N19/30 , H04N19/70
摘要： In one embodiment, a method receives a plurality of sample values. The method then determines a filter to determine an up-sampled value for a first layer for a video, wherein the filter has a set of coefficient values of [−1, 3, −9, 47, 31, −10, 4, −1] or [−1, 4, −10, 31, 47, −9, 3, −1] assigned to the filter. The up-sampled value is determined by applying the set of coefficient values of [−1, 3, −9, 47, 31, −10, 4, −1] or [−1, 4, −10, 31, 47, −9, 3, −1] to the plurality of sample values. The method then outputs the up-sampled value for use in coding a second layer of a higher resolution than the first layer. The up-sampled values may be for the 6/16 and − 6/16 phase offsets.
摘要翻译：在一个实施例中，方法接收多个样本值。该方法然后确定滤波器以确定用于视频的第一层的上采样值，其中滤波器具有[-1,3,9-，47，31，-10，4，...， 1]或[-1,4，-10，31，47，-9，3，-1]分配给过滤器。上采样值通过应用[-1,3,9-，47，31，-10，4，-1]或[-1,4，-10,31,47， -9，3，-1]。该方法然后输出上采样值用于编码比第一层更高分辨率的第二层。上采样值可能是6/16和-6/16相位偏移。

3. 发明申请

US20140301488A1 DERIVATION OF RESAMPLING FILTERS FOR SCALABLE VIDEO CODING 审中-公开
标题翻译：用于可扩展视频编码的替代滤波器的衍生
公开(公告)号：US20140301488A1
公开(公告)日：2014-10-09
申请号：US14247560
申请日：2014-04-08
申请人： General Instrument Corporation
发明人： David M. Baylon , Ajay K. Luthra , Koohyar Minoo
IPC分类号： H04N19/33 , H04N19/80
CPC分类号： H04N19/172 , H04N19/117 , H04N19/154 , H04N19/33 , H04N19/463 , H04N19/59 , H04N19/80
摘要： A method for determining a resampling filter for resampling a video signal used in scalable video coding includes estimating a set of row filters based on a video signal. The video signal has a base resolution that is resampled to provide an output signal that enables more efficient coding of the video signal with an enhanced resolution higher than a base resolution. The set of row filters is applied to the video signal to generate a first output signal having rows that are interpolated to the enhanced resolution. A set of column filters is estimated based on the first output signal for resampling the columns in the video signal. The set of column filters is applied to the first output signal to generate a second output signal having columns as well as rows that are interpolated to the enhanced resolution.
摘要翻译：用于确定用于重新采样可伸缩视频编码中使用的视频信号的重采样滤波器的方法包括基于视频信号估计一组行滤波器。视频信号具有重新采样以提供输出信号的基本分辨率，其能够以比基本分辨率更高的分辨率对视频信号进行更有效的编码。行集合滤波器被应用于视频信号以产生具有内插到增强分辨率的行的第一输出信号。基于用于重新采样视频信号中的列的第一输出信号来估计一组列滤波器。该列滤波器被应用于第一输出信号以产生具有列以及内插到增强分辨率的行的第二输出信号。

4. 发明申请

US20130266058A1 DEVICES AND METHODS FOR SIGNALING SAMPLE ADAPTIVE OFFSET (SAO) PARAMETERS 有权
标题翻译：用于信号自适应偏差（SAO）参数的设备和方法
公开(公告)号：US20130266058A1
公开(公告)日：2013-10-10
申请号：US13858597
申请日：2013-04-08
申请人： GENERAL INSTRUMENT CORPORATION
发明人： Koohyar Minoo , David Baylon
IPC分类号： H04N7/12
CPC分类号： H04N19/196 , H04N19/10 , H04N19/117 , H04N19/13 , H04N19/14 , H04N19/176 , H04N19/182 , H04N19/186 , H04N19/70 , H04N19/82 , H04N19/86
摘要： Systems and methods that improve video quality by signaling of parameters in a sample adaptive offset (SAO) process are disclosed. The methods and systems described herein generally pertain to video processing such as video encoders and decoders.
摘要翻译：公开了通过在样本自适应偏移（SAO）过程中信号通知信号来提高视频质量的系统和方法。本文描述的方法和系统通常涉及诸如视频编码器和解码器的视频处理。

5. 发明申请

US20130216156A1 METHOD AND SYSTEM FOR INTERPOLATING FRACTIONAL VIDEO PIXELS 有权
标题翻译：用于插入片段视频像素的方法和系统
公开(公告)号：US20130216156A1
公开(公告)日：2013-08-22
申请号：US13851223
申请日：2013-03-27
申请人： General Instrument Corporation
发明人： Jian Lou , David M. Baylon , Koohyar Minoo , Krit Panusopone , Limin Wang
IPC分类号： G06T3/40
CPC分类号： G06T3/4007 , H04N19/523 , H04N19/61 , H04N19/82
摘要： A method and system for interpolating video pixels is described, in which the value of a first fractional pixel is calculated based on the values of the first set of integer pixels, while the value of a second fractional pixel is calculated based on the values of the second set of integer pixels. The first set of integer pixels is not equal to the second set of integer pixels. For example, the first and second set may contain different integer pixels and may contain different numbers of integer pixels.
摘要翻译：描述了用于内插视频像素的方法和系统，其中基于第一组整数像素的值来计算第一分数像素的值，而基于第二分数像素的值来计算第二分数像素的值第二组整数像素。第一组整数像素不等于第二组整数像素。例如，第一和第二集合可以包含不同的整数像素，并且可以包含不同数量的整数像素。

6. 发明申请

US20130188741A1 DEVICES AND METHODS FOR SAMPLE ADAPTIVE OFFSET CODING AND/OR SELECTION OF BAND OFFSET PARAMETERS 审中-公开
标题翻译：用于样本自适应偏移编码和/或选择带偏移参数的设备和方法
公开(公告)号：US20130188741A1
公开(公告)日：2013-07-25
申请号：US13734765
申请日：2013-01-04
申请人： General Instrument Corporation
发明人： Koohyar Minoo , David Baylon , Yue Yu , Limin Wang
IPC分类号： H04N7/26
CPC分类号： H04N19/463 , H04N19/117 , H04N19/14 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/82 , H04N19/86
摘要： In one embodiment, a method for encoding sample adaptive offset (SAO) values in a video encoding process is provided, the method comprising: selecting a band offset type; determining a range of values associated with the selected band offset type, the range of values not being transmitted during encoding; generating one or more offset values for the selected band offset type; and optionally applying an offset value to at least a current pixel value to form an SAO compensated value.
摘要翻译：在一个实施例中，提供了一种在视频编码处理中对样本自适应偏移（SAO）值进行编码的方法，所述方法包括：选择频带偏移类型; 确定与所选频带偏移类型相关联的值的范围，在编码期间未发送的值的范围; 为所选择的带偏移类型生成一个或多个偏移值; 以及可选地将偏移值应用于至少当前像素值以形成SAO补偿值。

7. 发明申请

US20130114677A1 DEVICES AND METHODS FOR SAMPLE ADAPTIVE OFFSET CODING AND/OR SIGNALING 有权
标题翻译：用于样本自适应偏移编码和/或信号的装置和方法
公开(公告)号：US20130114677A1
公开(公告)日：2013-05-09
申请号：US13672476
申请日：2012-11-08
申请人： General Instrument Corporation
发明人： David M. Baylon , Koohyar Minoo
IPC分类号： H04N7/26
CPC分类号： H04N19/119 , H04N19/117 , H04N19/147 , H04N19/176 , H04N19/44 , H04N19/70 , H04N19/82 , H04N19/86 , H04N19/91
摘要： In one embodiment, a method for decoding a video bitstream comprises the steps of: (a) receiving a video bitstream; (b) deriving processed video data from the bitstream; (c) partitioning the processed video data into blocks, wherein each of the blocks is equal to or smaller than a picture; (d) deriving an SAO type from the video bitstream for each of the blocks, wherein the SAO type is associated with a specific nonbiased coding scheme; (e) determining an SAO sub-class associated with the SAO type for each of the pixels in each of the blocks; (f) deriving intensity offset from the video bitstream for the sub-class associated with the SAO type; and (g) applying SAO compensation to each of the pixels in a processed video block, wherein the SAO compensation is based on the intensity offset of step (f).
摘要翻译：在一个实施例中，用于解码视频比特流的方法包括以下步骤：（a）接收视频比特流; （b）从比特流导出经处理的视频数据; （c）将经处理的视频数据划分成块，其中每个块等于或小于图像; （d）从每个块的视频比特流中导出SAO类型，其中SAO类型与特定的非偏置编码方案相关联; （e）为每个块中的每个像素确定与SAO类型相关联的SAO子类; （f）从与SAO类型相关联的子类别的视频比特流中导出强度偏移; 以及（g）对经处理的视频块中的每个像素应用SAO补偿，其中所述SAO补偿基于步骤（f）的强度偏移。

8. 发明申请

US20150023435A1 RESAMPLING FILTERS FOR SCALABLE VIDEO CODING WITH PHASE OFFSET ADJUSTMENT AND SIGNALING OF SAME 审中-公开
标题翻译：通过相位偏移调整和信号对可扩展视频编码进行重新排序
公开(公告)号：US20150023435A1
公开(公告)日：2015-01-22
申请号：US14332133
申请日：2014-07-15
申请人： General Instrument Corporation
发明人： Koohyar Minoo , David M. Baylon , Ajay Luthra
IPC分类号： H04N19/33 , H04N19/80
CPC分类号： H04N19/117 , H04N19/17 , H04N19/186 , H04N19/33 , H04N19/46 , H04N19/59 , H04N19/70
摘要： Upsampling filters for use in scalable video coding may be selected from a set of filters each with a different phase. In order to accommodate a phase offset introduced from downsampling required to maintain proper luma/chroma color space positions after upsampling, an offset parameter may be used in computing the filter index. Moreover, a different offset may be used for each filter index. These offsets in effect provide a re-mapping of the filter indices. By remapping the filter indices in this manner the performance of the upsampling process can be improved and errors introduced by rounding or which are caused by the finite precision of the process used to compute the filter indices can be taken into account.
摘要翻译：用于可缩放视频编码的上采样滤波器可以从具有不同相位的一组滤波器中选择。为了适应在上采样之后维持适当亮度/色度颜色空间位置所需的下采样引入的相位偏移，可以使用偏移参数来计算滤波器索引。此外，可以对每个滤波器索引使用不同的偏移。这些偏移实际上提供了过滤器索引的重新映射。通过以这种方式重新映射滤波器索引，可以提高上采样处理的性能，并且可以考虑由用于计算滤波器索引的处理的有限精度引起的舍入引起的错误或引起的误差。

9. 发明申请

US20140307773A1 RE-SAMPLING WITH PHASE OFFSET ADJUSTMENT FOR LUMA AND CHROMA TO SELECT FILTERS IN SCALABLE VIDEO CODING 有权
标题翻译：用于LUMA和CHROMA进行相位偏移调整的重新采样以便在可缩放视频编码中选择滤波器
公开(公告)号：US20140307773A1
公开(公告)日：2014-10-16
申请号：US14250349
申请日：2014-04-10
申请人： General Instrument Corporation
发明人： Koohyar Minoo , David M. Baylon , Ajay K. Luthra
IPC分类号： H04N19/30 , H04N19/186 , H04N19/187 , H04N19/117
CPC分类号： H04N19/30 , H04N19/117 , H04N19/134 , H04N19/186 , H04N19/187 , H04N19/33 , H04N19/70 , H04N19/80 , H04N19/86
摘要： A sampling filter process is provided for scalable video coding. The process provides for re-sampling using video data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system using adaptive phase shifting to improve quality in Scalable High efficiency Video Coding (SHVC). In order to compensate for phase offsets introduced by downsampling an appropriate phase offset adjustment is made for upsampling in SHVC with an appropriate offset included for proper luma/chroma color space positions. In one approach the luma/chroma phase offset is specified and a filter is selected to apply the appropriate phase change.
摘要翻译：为可伸缩视频编码提供采样滤波器处理。该过程提供使用使用自适应相移的多层系统中的基本层（BL）的编码器或解码器处理获得的视频数据进行重新采样，以提高可扩展高效率视频编码（SHVC）中的质量。为了补偿通过下采样引入的相位偏移，适当的相位偏移调整用于适当的亮度/色度颜色空间位置包括的适当的偏移量在SHVC中进行上采样。在一种方法中，指定亮度/色度相位偏移，并选择滤波器以应用适当的相位变化。

10. 发明授权

US10218970B2 Resampling filters for scalable video coding with phase offset adjustment and signaling of same 有权
公开(公告)号：US10218970B2
公开(公告)日：2019-02-26
申请号：US14332133
申请日：2014-07-15
申请人： General Instrument Corporation
发明人： Koohyar Minoo , David M. Baylon , Ajay Luthra
IPC分类号： H04N19/33 , H04N19/80 , H04N19/117 , H04N19/186 , H04N19/17 , H04N19/59 , H04N19/70 , H04N19/46
摘要： Upsampling filters for use in scalable video coding may be selected from a set of filters each with a different phase. In order to accommodate a phase offset introduced from downsampling required to maintain proper luma/chroma color space positions after upsampling, an offset parameter may be used in computing the filter index. Moreover, a different offset may be used for each filter index. These offsets in effect provide a re-mapping of the filter indices. By remapping the filter indices in this manner the performance of the upsampling process can be improved and errors introduced by rounding or which are caused by the finite precision of the process used to compute the filter indices can be taken into account.

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