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1. 发明授权

US09788010B2 Reducing computational complexity when video encoding uses bi-predictively encoded frames 有权
公开(公告)号：US09788010B2
公开(公告)日：2017-10-10
申请号：US12773145
申请日：2010-05-04
申请人： Soyeb Nagori , Arun Shankar Kudana , Pramod Kumar Swami
发明人： Soyeb Nagori , Arun Shankar Kudana , Pramod Kumar Swami
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04N19/523 , H04N19/105 , H04N19/176 , H04N19/147 , H04N19/172 , H04N19/61 , H04N19/109 , H04N19/114 , H04N19/117 , H04N19/156 , H04N19/157
CPC分类号： H04N19/523 , H04N19/105 , H04N19/109 , H04N19/114 , H04N19/117 , H04N19/147 , H04N19/156 , H04N19/157 , H04N19/172 , H04N19/176 , H04N19/61
摘要： Several techniques aimed at reducing computational complexity when encoding uses bi-predictively encoded frames (B-frames) are implemented in a video encoder. In an embodiment, B-frames are not used as reference frames for encoding P-frames and other B-frames. Non-use of B-frames allows a de-blocking filter used in the video encoder to be switched off when reconstructing encoded B-frames, and use of a lower complexity filter for fractional-resolution motion search for B-frames. In another embodiment, cost functions used in motion estimation for B-frames are simplified to reduce computational complexity. In one more embodiment, fractional pixel refinement in motion search for B-frames is simplified. In yet another embodiment, predictors used in motion estimation for a macro-block in a P-frame are selected from a B-frame that uses a same reference frame as the P-frame.

2. 发明申请

US20100284464A1 REDUCING COMPUTATIONAL COMPLEXITY WHEN VIDEO ENCODING USES BI-PREDICTIVELY ENCODED FRAMES 有权
标题翻译：视频编码使用双重预编码框架降低计算复杂度
公开(公告)号：US20100284464A1
公开(公告)日：2010-11-11
申请号：US12773145
申请日：2010-05-04
申请人： Soyeb Nagori , Arun Shankar Kudana , Pramod Kumar Swami
发明人： Soyeb Nagori , Arun Shankar Kudana , Pramod Kumar Swami
IPC分类号： H04N7/26 , H04N7/32
CPC分类号： H04N19/523 , H04N19/105 , H04N19/109 , H04N19/114 , H04N19/117 , H04N19/147 , H04N19/156 , H04N19/157 , H04N19/172 , H04N19/176 , H04N19/61
摘要： Several techniques aimed at reducing computational complexity when encoding uses bi-predictively encoded frames (B-frames) are implemented in a video encoder. In an embodiment, B-frames are not used as reference frames for encoding P-frames and other B-frames. Non-use of B-frames allows a de-blocking filter used in the video encoder to be switched off when reconstructing encoded B-frames, and use of a lower complexity filter for fractional-resolution motion search for B-frames. In another embodiment, cost functions used in motion estimation for B-frames are simplified to reduce computational complexity. In one more embodiment, fractional pixel refinement in motion search for B-frames is simplified. In yet another embodiment, predictors used in motion estimation for a macro-block in a P-frame are selected from a B-frame that uses a same reference frame as the P-frame.
摘要翻译：在编码中使用双预测编码帧（B帧）的目的在于减少计算复杂度的若干技术在视频编码器中实现。在一个实施例中，B帧不用作用于对P帧和其他B帧进行编码的参考帧。不使用B帧允许在重构编码的B帧时使视频编码器中使用的解块滤波器被关闭，并且使用较低复杂度的滤波器用于B帧的分数分辨率运动搜索。在另一个实施例中，简化了用于B帧运动估计的成本函数，以减少计算复杂度。在另一个实施例中，简化了用于B帧的运动搜索中的分数像素细化。在另一个实施例中，从使用与P帧相同的参考帧的B帧中选择用于P帧中的宏块的运动估计中的预测器。

3. 发明申请

US20100002944A1 DETERMINATION OF A FIELD REFERENCING PATTERN 有权
标题翻译：现场参考模式的确定
公开(公告)号：US20100002944A1
公开(公告)日：2010-01-07
申请号：US12465673
申请日：2009-05-14
申请人： Arun Shankar Kudana , Soyeb Nagori
发明人： Arun Shankar Kudana , Soyeb Nagori
IPC分类号： H04N7/26 , G06K9/36
CPC分类号： H04N19/00684 , H04N19/105 , H04N19/112 , H04N19/132 , H04N19/139 , H04N19/176 , H04N19/513 , H04N19/523 , H04N19/573
摘要： Several methods and a system to perform determination of a field referencing pattern are disclosed. In one aspect, a method is disclosed. A motion vector of a previously coded frame is analyzed using a processor and a memory. A statistic is updated based on whether the motion vector includes one or more of a fractional pel vertical component, a half pel vertical component, and an integer pel vertical component. A field referencing pattern of a target field is determined based on the statistic and an exception protocol.
摘要翻译：公开了几种方法和执行场参考模式确定的系统。一方面，公开了一种方法。使用处理器和存储器来分析先前编码的帧的运动矢量。基于运动矢量是否包括分数像素垂直分量，半像素垂直分量和整数像素垂直分量中的一个或多个来更新统计量。基于统计量和异常协议来确定目标字段的字段引用模式。

4. 发明授权

US08817884B2 Techniques for perceptual encoding of video frames 有权
标题翻译：视频帧感知编码技术
公开(公告)号：US08817884B2
公开(公告)日：2014-08-26
申请号：US12951035
申请日：2010-11-20
申请人： Arun Shankar Kudana , Ajit Venkat Rao , Soyeb Nagori , Manoj Koul , Zhan Ma , Do-Kyoung Kwon
发明人： Arun Shankar Kudana , Ajit Venkat Rao , Soyeb Nagori , Manoj Koul , Zhan Ma , Do-Kyoung Kwon
IPC分类号： H04N7/18 , H04N7/26
CPC分类号： H04N19/00175 , H04N19/107 , H04N19/109 , H04N19/124 , H04N19/14 , H04N19/147 , H04N19/167 , H04N19/17 , H04N19/18 , H04N19/182 , H04N19/19 , H04N19/80 , H04N19/87
摘要： In a video encoder, pixel values of a macro-block are processed to determine an activity measure indicative of the type of content in the macro-block. Several techniques are employed for determining the activity measure of a macro-block. In an embodiment, a default quantization scale for quantizing a macro-block is modified based on the activity measure of the macro-block. In another embodiment, the macro-block is classified into one of multiple classes based on its activity measure. The default quantization scale for quantizing the macro-block is modified based on the classification of the macro-block. In yet another embodiment, an encoding mode to be used for encoding a macro-block is also determined on the basis of the class of the macro-block. Several of the techniques exploit the fact that the human visual system (HVS) has different sensitivities in perceiving a (rendered) macro-block or video frame, depending on the type of macro-block content.
摘要翻译：在视频编码器中，处理宏块的像素值以确定指示宏块中的内容类型的活动度量。采用几种技术来确定宏块的活动度量。在一个实施例中，基于宏块的活动度量来修改用于量化宏块的默认量化尺度。在另一个实施例中，基于其活动度量将宏块分类为多个类别之一。基于宏块的分类修改用于量化宏块的默认量化尺度。在另一个实施例中，还根据宏块的类确定用于编码宏块的编码模式。几种技术利用人类视觉系统（HVS）根据宏块内容的类型在感知（渲染）宏块或视频帧时具有不同的灵敏度。

5. 发明授权

US08345996B2 Determination of a field referencing pattern 有权
标题翻译：确定字段引用模式
公开(公告)号：US08345996B2
公开(公告)日：2013-01-01
申请号：US12465673
申请日：2009-05-14
申请人： Arun Shankar Kudana , Soyeb Nagori
发明人： Arun Shankar Kudana , Soyeb Nagori
IPC分类号： G06K9/36 , H04N7/26 , G06K9/46
CPC分类号： H04N19/00684 , H04N19/105 , H04N19/112 , H04N19/132 , H04N19/139 , H04N19/176 , H04N19/513 , H04N19/523 , H04N19/573
摘要： Several methods and a system to perform determination of a field referencing pattern are disclosed. In one aspect, a method is disclosed. A motion vector of a previously coded frame is analyzed using a processor and a memory. A statistic is updated based on whether the motion vector includes one or more of a fractional pel vertical component, a half pel vertical component, and an integer pel vertical component. A field referencing pattern of a target field is determined based on the statistic and an exception protocol.
摘要翻译：公开了几种方法和执行场参考模式确定的系统。一方面，公开了一种方法。使用处理器和存储器来分析先前编码的帧的运动矢量。基于运动矢量是否包括分数像素垂直分量，半像素垂直分量和整数像素垂直分量中的一个或多个来更新统计量。基于统计量和异常协议来确定目标字段的字段引用模式。

6. 发明申请

US20120183042A1 Methods and Systems for Facilitating Multimedia Data Encoding 有权
标题翻译：促进多媒体数据编码的方法和系统
公开(公告)号：US20120183042A1
公开(公告)日：2012-07-19
申请号：US13349268
申请日：2012-01-12
申请人： Uday Pudipeddi Kiran , Deepak Kumar Poddar , Pramod Kumar Swami , Arun Shankar Kudana
发明人： Uday Pudipeddi Kiran , Deepak Kumar Poddar , Pramod Kumar Swami , Arun Shankar Kudana
IPC分类号： H04N7/26
CPC分类号： H04N19/423 , H04N19/177 , H04N19/44 , H04N19/577
摘要： Several methods and systems for facilitating multimedia data encoding are disclosed. In an embodiment, a plurality of picture buffers associated with multimedia data are received in an order of capture associated with the plurality of picture buffers. Buffer information is configured for each picture buffer from among the plurality of picture buffers comprising at least one of a metadata associated with the corresponding picture buffer and one or more encoding parameters for the corresponding picture buffer. A provision of picture buffers in an order of encoding is facilitated based on the configured buffer information.
摘要翻译：公开了用于促进多媒体数据编码的几种方法和系统。在一个实施例中，以与多个图像缓冲器相关联的捕获顺序接收与多媒体数据相关联的多个图像缓冲器。对于包括与对应的图像缓冲器相关联的元数据中的至少一个和用于相应图像缓冲器的一个或多个编码参数的多个图像缓冲器中的每个图像缓冲器配置缓冲器信息。基于配置的缓冲器信息，便于按编码顺序提供图像缓冲器。

7. 发明授权

US09635385B2 Methods and systems for estimating motion in multimedia pictures 有权
公开(公告)号：US09635385B2
公开(公告)日：2017-04-25
申请号：US13442908
申请日：2012-04-10
申请人： Arun Shankar Kudana , Soyeb Nagori
发明人： Arun Shankar Kudana , Soyeb Nagori
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04N19/58 , H04N19/56 , H04N19/105 , H04N19/513 , H04N19/112
CPC分类号： H04N19/58 , H04N19/105 , H04N19/112 , H04N19/513 , H04N19/56
摘要： Several methods and systems for estimating motion in a plurality of multimedia pictures are disclosed. In an embodiment, at least one temporal distance between a multimedia picture and one or more reference pictures corresponding to the multimedia picture in a capture order associated with the plurality of multimedia pictures is computed. The at least one temporal distance is computed subsequent to an encoding of the multimedia picture. At least one motion estimation parameter is determined based on the at least one temporal distance. Motion associated with a subsequent multimedia picture to be encoded is estimated based on the at least one motion estimation parameter.

8. 发明申请

US20120263227A1 METHODS AND SYSTEMS FOR ESTIMATING MOTION IN MULTIMEDIA PICTURES 有权
标题翻译：在多媒体图像中估计运动的方法和系统
公开(公告)号：US20120263227A1
公开(公告)日：2012-10-18
申请号：US13442908
申请日：2012-04-10
申请人： Arun Shankar Kudana , Soyeb Nagori
发明人： Arun Shankar Kudana , Soyeb Nagori
IPC分类号： H04N7/36 , H04N7/26
CPC分类号： H04N19/58 , H04N19/105 , H04N19/112 , H04N19/513 , H04N19/56
摘要： Several methods and systems for estimating motion in a plurality of multimedia pictures are disclosed. In an embodiment, at least one temporal distance between a multimedia picture and one or more reference pictures corresponding to the multimedia picture in a capture order associated with the plurality of multimedia pictures is computed. The at least one temporal distance is computed subsequent to an encoding of the multimedia picture. At least one motion estimation parameter is determined based on the at least one temporal distance. Motion associated with a subsequent multimedia picture to be encoded is estimated based on the at least one motion estimation parameter.
摘要翻译：公开了用于估计多个多媒体图像中的运动的几种方法和系统。在一个实施例中，计算多媒体图片与对应于与多个多媒体图片相关联的捕获顺序中的多媒体图片的一个或多个参考图片之间的至少一个时间距离。在多媒体图像的编码之后计算至少一个时间距离。基于至少一个时间距离来确定至少一个运动估计参数。基于至少一个运动估计参数来估计与待编码的后续多媒体图像相关联的运动。

9. 发明申请

US20110255594A1 Rate Control in Video Coding 审中-公开
标题翻译：视频编码中的速率控制
公开(公告)号：US20110255594A1
公开(公告)日：2011-10-20
申请号：US13084572
申请日：2011-04-12
申请人： Soyeb Nagori , Arun Shankar Kudana , Manu Mathew
发明人： Soyeb Nagori , Arun Shankar Kudana , Manu Mathew
IPC分类号： H04N7/26
摘要： A method of rate control in coding of a video sequence to generate a compressed bit stream is provided that includes computing a sequence base quantization step size for a sequence of pictures in the video sequence, computing a picture base quantization step size for a picture in the sequence of pictures based on the sequence base quantization step size, a type of the picture, and a level of the picture in a rate control hierarchy, and coding the picture using the picture base quantization step size to generate a portion of the compressed bit stream.
摘要翻译：提供了一种用于编码视频序列以产生压缩比特流的速率控制的方法，包括：计算视频序列中的一系列图像的序列基本量化步长，计算图像中的图像的图像基本量化步长基于序列基本量化步长，图像类型和速率控制层级中的图像的级别的图像序列，以及使用图像基本量化步长对图像进行编码，以生成压缩比特流的一部分。

10. 发明申请

US20100309981A1 REUSE OF A SEARCH REGION IN MOTION ESTIMATION OF MULTIPLE TARGET FRAMES 审中-公开
标题翻译：多个目标框架的运动估计搜索区域的重用
公开(公告)号：US20100309981A1
公开(公告)日：2010-12-09
申请号：US12477963
申请日：2009-06-04
申请人： SOYEB NAGORI , Arun Shankar Kudana , Ajit Venkat Rao
发明人： SOYEB NAGORI , Arun Shankar Kudana , Ajit Venkat Rao
IPC分类号： H04N7/26
CPC分类号： H04N19/57 , H04N19/423 , H04N19/43 , H04N19/61
摘要： Several methods and a system to reuse a search region in motion estimation of multiple target frames are disclosed. In an embodiment, a method includes acquiring a search region of a reference frame. The method also includes maintaining the search region in a memory. In addition, the method includes performing motion estimation of a macroblock of a target frame in a direction using a processor and the search region. The method also includes reusing the search region maintained in the memory to perform motion estimation of an additional macroblock of an additional target frame in an additional direction. The method may include reusing the search region maintained in the memory to perform motion estimation of a separate macroblock of a separate target frame in a separate direction.
摘要翻译：公开了在多个目标帧的运动估计中重用搜索区域的几种方法和系统。在一个实施例中，一种方法包括获取参考帧的搜索区域。该方法还包括将搜索区域保持在存储器中。此外，该方法包括使用处理器和搜索区域在方向上执行目标帧的宏块的运动估计。该方法还包括重新使用保持在存储器中的搜索区域，以在附加方向上执行附加目标帧的附加宏块的运动估计。该方法可以包括重新使用保持在存储器中的搜索区域来执行单独目标帧在单独方向上的单独宏块的运动估计。

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