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1. 发明授权

US10123037B2 Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding with reduced requirements for division operations 有权
公开(公告)号：US10123037B2
公开(公告)日：2018-11-06
申请号：US15377885
申请日：2016-12-13
申请人： Apple Inc.
发明人： Barin Geoffry Haskell , David William Singer , Adriana Dumitras , Atul Puri
IPC分类号： H04N7/18 , H04N19/52 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/51 , H04N19/513 , H04N19/196 , H04N19/15 , H04N19/61 , H04N19/107 , H04N19/463 , H04N19/124 , H04N19/152 , H04N19/48 , H04N19/40 , H04N19/577 , H04N19/13 , H04N19/137 , H04N19/139 , H04N19/146 , H04N19/132 , H04N19/587 , H04N19/625 , H04N19/172
摘要： A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.

2. 发明申请

US20170094308A1 METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FOR DIVISION OPERATIONS 审中-公开
公开(公告)号：US20170094308A1
公开(公告)日：2017-03-30
申请号：US15377885
申请日：2016-12-13
申请人： Apple Inc.
发明人： Barin Geoffry Haskell , David William Singer , Adriana Dumitras , Atul Puri
IPC分类号： H04N19/52 , H04N19/146 , H04N19/132 , H04N19/139 , H04N19/625 , H04N19/124
CPC分类号： H04N19/52 , H04N7/50 , H04N19/107 , H04N19/124 , H04N19/13 , H04N19/132 , H04N19/137 , H04N19/139 , H04N19/146 , H04N19/15 , H04N19/152 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/196 , H04N19/40 , H04N19/46 , H04N19/463 , H04N19/48 , H04N19/51 , H04N19/513 , H04N19/577 , H04N19/587 , H04N19/61 , H04N19/625
摘要： A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.

3. 发明授权

US09516337B2 Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding 有权
公开(公告)号：US09516337B2
公开(公告)日：2016-12-06
申请号：US14929145
申请日：2015-10-30
申请人： Apple Inc.
发明人： Barin Geoffry Haskell , David William Singer , Adriana Dumitras , Atul Puri
IPC分类号： H04N7/12 , H04N19/513 , H04N19/176 , H04N19/61 , H04N21/43 , G06T9/00 , H04N19/503 , H04N19/46 , H04N19/51 , H04N19/13 , H04N19/91 , H04N19/132 , H04N19/43 , H04N19/587 , H04N19/577 , H04N19/40 , H04N19/00
CPC分类号： H04N19/513 , G06T9/005 , H04N19/13 , H04N19/132 , H04N19/176 , H04N19/40 , H04N19/43 , H04N19/44 , H04N19/46 , H04N19/503 , H04N19/51 , H04N19/577 , H04N19/587 , H04N19/61 , H04N19/91 , H04N21/4305
摘要： A method and apparatus for variable accuracy inter-picture timing specification for digital video encoding is disclosed. Specifically, the present invention discloses a system that allows the relative timing of nearby video pictures to be encoded in a very efficient manner. In one embodiment, the display time difference between a current video picture and a nearby video picture is determined. The display time difference is then encoded into a digital representation of the video picture. In a preferred embodiment, the nearby video picture is the most recently transmitted stored picture. For coding efficiency, the display time difference may be encoded using a variable length coding system or arithmetic coding. In an alternate embodiment, the display time difference is encoded as a power of two to reduce the number of bits transmitted.

4. 发明申请

US20130308058A1 LOOK-AHEAD SYSTEM AND METHOD FOR PAN AND ZOOM DETECTION IN VIDEO SEQUENCES 有权
标题翻译：用于在视频序列中进行PAN和变焦检测的前瞻性系统和方法
公开(公告)号：US20130308058A1
公开(公告)日：2013-11-21
申请号：US13949808
申请日：2013-07-24
申请人： Apple Inc.
发明人： Adriana Dumitras , Barin G. Haskell
IPC分类号： H04N5/14
CPC分类号： H04N5/147 , H04N5/144 , H04N5/145 , H04N19/102 , H04N19/137 , H04N19/139 , H04N19/142 , H04N19/182 , H04N19/527 , H04N19/543 , H04N19/61
摘要： A look-ahead system and method for pan and zoom detection in video sequences is disclosed. The system and method use motion vectors in a reference coordinate system to identify pans and zooms in video sequences. The identification of pans and zooms enables parameter switching for improved encoding in various video standards (e.g., H.264) and improved video retrieval of documentary movies and other video sequences in video databases or other storage devices.
摘要翻译：公开了一种用于视频序列中的平移和缩放检测的前瞻系统和方法。系统和方法使用参考坐标系中的运动矢量来识别视频序列中的平移和缩放。平底锅和缩放的识别使得能够在各种视频标准（例如，H.264）中改进编码的参数切换以及视频数据库或其他存储设备中的纪录片和其他视频序列的改进的视频检索。

5. 发明授权

US09204161B2 Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding 有权
标题翻译：用于数字视频编码的可变精度画面间时序规范的方法和装置
公开(公告)号：US09204161B2
公开(公告)日：2015-12-01
申请号：US14462396
申请日：2014-08-18
申请人： Apple Inc.
发明人： Barin Geoffry Haskell , David William Singer , Adriana Dumitras , Atul Puri
IPC分类号： H04N7/12 , H04N19/513 , H04N19/61 , H04N19/176 , H04N19/102 , G06T9/00 , H04N19/503 , H04N19/46 , H04N19/51 , H04N19/13 , H04N19/91 , H04N19/132 , H04N19/43 , H04N19/587 , H04N19/577 , H04N19/40
CPC分类号： H04N19/513 , G06T9/005 , H04N19/13 , H04N19/132 , H04N19/176 , H04N19/40 , H04N19/43 , H04N19/44 , H04N19/46 , H04N19/503 , H04N19/51 , H04N19/577 , H04N19/587 , H04N19/61 , H04N19/91 , H04N21/4305
摘要： A method and apparatus for variable accuracy inter-picture timing specification for digital video encoding is disclosed. Specifically, the present invention discloses a system that allows the relative timing of nearby video pictures to be encoded in a very efficient manner. In one embodiment, the display time difference between a current video picture and a nearby video picture is determined. The display time difference is then encoded into a digital representation of the video picture. In a preferred embodiment, the nearby video picture is the most recently transmitted stored picture. For coding efficiency, the display time difference may be encoded using a variable length coding system or arithmetic coding. In an alternate embodiment, the display time difference is encoded as a power of two to reduce the number of bits transmitted.
摘要翻译：公开了一种用于数字视频编码的可变精度画面间时序规范的方法和装置。具体地说，本发明公开了一种允许以非常有效的方式编码附近视频图像的相对定时的系统。在一个实施例中，确定当前视频图像和附近视频图像之间的显示时间差。然后将显示时间差编码为视频图像的数字表示。在优选实施例中，附近的视频图像是最近发送的存储图像。对于编码效率，可以使用可变长度编码系统或算术编码对显示时间差进行编码。在替代实施例中，显示时间差被编码为2的幂，以减少发送的比特数。

6. 发明授权

US09838707B2 Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding 有权
公开(公告)号：US09838707B2
公开(公告)日：2017-12-05
申请号：US15340976
申请日：2016-11-01
申请人： Apple Inc.
发明人： Barin Geoffry Haskell , David William Singer , Adriana Dumitras , Atul Puri
IPC分类号： H04N19/513 , H04N19/176 , H04N19/40 , H04N21/43 , G06T9/00 , H04N19/503 , H04N19/46 , H04N19/51 , H04N19/13 , H04N19/61 , H04N19/91 , H04N19/132 , H04N19/43 , H04N19/587 , H04N19/577 , H04N19/44
CPC分类号： H04N19/513 , G06T9/005 , H04N19/13 , H04N19/132 , H04N19/176 , H04N19/40 , H04N19/43 , H04N19/44 , H04N19/46 , H04N19/503 , H04N19/51 , H04N19/577 , H04N19/587 , H04N19/61 , H04N19/91 , H04N21/4305
摘要： A method and apparatus for variable accuracy inter-picture timing specification for digital video encoding is disclosed. Specifically, the present invention discloses a system that allows the relative timing of nearby video pictures to be encoded in a very efficient manner. In one embodiment, the display time difference between a current video picture and a nearby video picture is determined. The display time difference is then encoded into a digital representation of the video picture. In a preferred embodiment, the nearby video picture is the most recently transmitted stored picture. For coding efficiency, the display time difference may be encoded using a variable length coding system or arithmetic coding. In an alternate embodiment, the display time difference is encoded as a power of two to reduce the number of bits transmitted.

7. 发明申请

US20170054994A1 METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING 审中-公开
标题翻译：用于数字视频编码的可变精度互联时序规范的方法和装置
公开(公告)号：US20170054994A1
公开(公告)日：2017-02-23
申请号：US15340976
申请日：2016-11-01
申请人： Apple Inc.
发明人： Barin Geoffry Haskell , David William Singer , Adriana Dumitras , Atul Puri
IPC分类号： H04N19/513 , H04N19/43 , H04N19/577 , H04N19/176
CPC分类号： H04N19/513 , G06T9/005 , H04N19/13 , H04N19/132 , H04N19/176 , H04N19/40 , H04N19/43 , H04N19/44 , H04N19/46 , H04N19/503 , H04N19/51 , H04N19/577 , H04N19/587 , H04N19/61 , H04N19/91 , H04N21/4305
摘要： A method and apparatus for variable accuracy inter-picture timing specification for digital video encoding is disclosed. Specifically, the present invention discloses a system that allows the relative timing of nearby video pictures to be encoded in a very efficient manner. In one embodiment, the display time difference between a current video picture and a nearby video picture is determined. The display time difference is then encoded into a digital representation of the video picture. In a preferred embodiment, the nearby video picture is the most recently transmitted stored picture. For coding efficiency, the display time difference may be encoded using a variable length coding system or arithmetic coding. In an alternate embodiment, the display time difference is encoded as a power of two to reduce the number of bits transmitted.
摘要翻译：公开了一种用于数字视频编码的可变精度画面间时序规范的方法和装置。具体地说，本发明公开了一种允许以非常有效的方式编码附近视频图像的相对定时的系统。在一个实施例中，确定当前视频图像和附近视频图像之间的显示时间差。然后将显示时间差编码为视频图像的数字表示。在优选实施例中，附近的视频图像是最近发送的存储图像。对于编码效率，可以使用可变长度编码系统或算术编码对显示时间差进行编码。在替代实施例中，显示时间差被编码为2的幂，以减少发送的比特数。

8. 发明授权

US09554151B2 Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding with reduced requirements for division operations 有权
标题翻译：用于数字视频编码的可变精度画面间定时规范的方法和装置，减少对分割操作的要求
公开(公告)号：US09554151B2
公开(公告)日：2017-01-24
申请号：US14530519
申请日：2014-10-31
申请人： Apple Inc.
发明人： Barin Geoffry Haskell , David William Singer , Adriana Dumitras , Atul Puri
IPC分类号： H04N7/12 , H04N19/52 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/51 , H04N19/513 , H04N19/196 , H04N19/15 , H04N19/61 , H04N19/107 , H04N19/463 , H04N19/124 , H04N19/152 , H04N19/48 , H04N19/40 , H04N19/577 , H04N19/13 , H04N19/137 , H04N19/139 , H04N19/146 , H04N19/132 , H04N19/587
CPC分类号： H04N19/52 , H04N7/50 , H04N19/107 , H04N19/124 , H04N19/13 , H04N19/132 , H04N19/137 , H04N19/139 , H04N19/146 , H04N19/15 , H04N19/152 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/196 , H04N19/40 , H04N19/46 , H04N19/463 , H04N19/48 , H04N19/51 , H04N19/513 , H04N19/577 , H04N19/587 , H04N19/61 , H04N19/625
摘要： A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.
摘要翻译：公开了一种用于在数字视频系统中执行运动估计的方法和装置。具体地，本发明公开了一种以非常有效的方式快速计算估计的运动矢量的系统。在一个实施例中，通过将第一视频图像和第二视频图像之间的第一显示时间差乘以两个比例值的幂来确定第一被乘数。这个步骤可以扩大一个比例的分子。接下来，系统通过将所述缩放分子除以所述第二视频图像和第三视频图像之间的第二第一显示时间差来确定缩放比例。然后存储计算运动矢量估计的缩放比例。通过存储缩放比例，可以以高精度快速计算所有估计的运动矢量，因为缩放比例可以节省有效位，并且通过简单的移位来减小刻度。

9. 发明申请

US20150049815A1 METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING 审中-公开
标题翻译：用于数字视频编码的可变精度互联时序规范的方法和装置
公开(公告)号：US20150049815A1
公开(公告)日：2015-02-19
申请号：US14462396
申请日：2014-08-18
申请人： Apple Inc.
发明人： Barin Geoffry Haskell , David William Singer , Adriana Dumitras , Atul Puri
IPC分类号： H04N19/513 , H04N19/577
CPC分类号： H04N19/513 , G06T9/005 , H04N19/13 , H04N19/132 , H04N19/176 , H04N19/40 , H04N19/43 , H04N19/44 , H04N19/46 , H04N19/503 , H04N19/51 , H04N19/577 , H04N19/587 , H04N19/61 , H04N19/91 , H04N21/4305
摘要： A method and apparatus for variable accuracy inter-picture timing specification for digital video encoding is disclosed. Specifically, the present invention discloses a system that allows the relative timing of nearby video pictures to be encoded in a very efficient manner. In one embodiment, the display time difference between a current video picture and a nearby video picture is determined. The display time difference is then encoded into a digital representation of the video picture. In a preferred embodiment, the nearby video picture is the most recently transmitted stored picture. For coding efficiency, the display time difference may be encoded using a variable length coding system or arithmetic coding. In an alternate embodiment, the display time difference is encoded as a power of two to reduce the number of bits transmitted.
摘要翻译：公开了一种用于数字视频编码的可变精度画面间时序规范的方法和装置。具体地说，本发明公开了一种允许以非常有效的方式编码附近视频图像的相对定时的系统。在一个实施例中，确定当前视频图像和附近视频图像之间的显示时间差。然后将显示时间差编码为视频图像的数字表示。在优选实施例中，附近的视频图像是最近发送的存储图像。对于编码效率，可以使用可变长度编码系统或算术编码对显示时间差进行编码。在替代实施例中，显示时间差被编码为2的幂，以减少发送的比特数。

10. 发明申请

US20140362903A1 Method and Apparatus For Improved Coding Mode Selection 审中-公开
标题翻译：改进编码模式选择的方法和装置
公开(公告)号：US20140362903A1
公开(公告)日：2014-12-11
申请号：US14307419
申请日：2014-06-17
申请人： Apple Inc.
发明人： Adriana Dumitras , Barin Geoffry Haskell , Atul Puri
IPC分类号： H04N19/105 , H04N19/154
CPC分类号： H04N19/154 , H04N19/00 , H04N19/103 , H04N19/105 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/52 , H04N19/61
摘要： In this disclosure, a novel method for direct mode enhancement in B-pictures and skip mode enhancement in P-pictures in the framework of H.264 (MPEG-4/Part 10) is disclosed. Direct mode and skip mode enhancements are achieved by clustering the values of the Lagrangian, removing outliers and specifying smaller values of the Lagrangian multiplier in the rate-distortion optimization for encoding mode selection. Experimental results using high quality video sequences show that bit rate reduction is obtained using the method of the present invention, at the expense of a slight loss in peak signal-to-noise ratio (PSNR). By conducting two different experiments, it has been verified that no subjective visual loss is visible despite the peak signal-to-noise ratio change. In relationship to the existing rate-distortion optimization methods currently employed in the (non-normative) MPEG-4/Part 10 encoder, the method of the present invention represents a simple and useful add-on. More importantly, when other solutions such as further increasing the values of the quantization parameter are not applicable, as inadmissible artifacts would be introduced in the decoded pictures, the method of the present invention achieves bit rate reduction without introducing visible distortion in the decoded sequences. Even more, despite the fact that the present document makes use of the H.264 framework, the proposed method is applicable in any video encoding system that employs rate-distortion optimization for encoding mode selection.
摘要翻译：在本公开中，公开了一种用于H.264（MPEG-4 / Part 10）的框架中的P图像中的B图像和跳过模式增强中的直接模式增强的新颖方法。直接模式和跳过模式增强是通过对拉格朗日数值进行聚类来实现的，该值是在编码模式选择的速率失真优化中去除异常值并指定较小的拉格朗日乘数值。使用高质量视频序列的实验结果表明，使用本发明的方法可以以峰值信噪比（PSNR）的轻微损失为代价来获得比特率降低。通过进行两个不同的实验，已经证实，尽管峰值信噪比变化，没有主观视觉损失是可见的。与目前在（非规范性）MPEG-4 / Part 10编码器中使用的速率失真优化方法有关，本发明的方法代表了一种简单而有用的附加组件。更为重要的是，当进一步增加量化参数值的其他解决方案不适用时，由于不可接受的伪像将被引入到解码图像中，所以本发明的方法实现比特率降低而不引入解码序列中的可见失真。更重要的是，尽管本文件使用H.264框架，但是所提出的方法可应用于采用速率失真优化用于编码模式选择的任何视频编码系统。

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