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1. 发明授权

US08170356B2 Linear temporal reference scheme having non-reference predictive frames 有权
标题翻译：具有非参考预测帧的线性时间参考方案
公开(公告)号：US08170356B2
公开(公告)日：2012-05-01
申请号：US12060887
申请日：2008-04-02
申请人： Manu Mathew , Soyeb Nagori , Pramod Kumar Swami
发明人： Manu Mathew , Soyeb Nagori , Pramod Kumar Swami
IPC分类号： G06K9/36
CPC分类号： H04N19/31 , H04N19/107 , H04N19/114 , H04N19/124 , H04N19/139 , H04N19/142 , H04N19/159 , H04N19/164 , H04N19/172 , H04N19/177 , H04N19/56 , H04N19/61
摘要： The method, system, and apparatus of linear temporal reference scheme having non-reference predictive frames is disclosed. In one embodiment, a method of a temporal reference scheme includes creating a non-reference predictive frame and a reference predictive frame from a reference frame, increasing a quantization factor of the non-reference predictive frame by a threshold value, and decreasing the quantization factor of the reference predictive frame by the threshold value. The method may include toggling between the temporal reference scheme and another temporal reference scheme in which there may be no non-reference predictive frames and only reference predictive frames based on a scenario. The method may also include calculating a target bit rate across a communication channel through a bit rate calculation algorithm that considers a bandwidth capacity across the communication channel.
摘要翻译：公开了具有非参考预测帧的线性时间参考方案的方法，系统和装置。在一个实施例中，时间参考方案的方法包括从参考帧创建非参考预测帧和参考预测帧，将非参考预测帧的量化因子增加阈值，并且减小量化因子的参考预测帧的阈值。该方法可以包括在时间参考方案和另一个时间参考方案之间切换，其中可以不存在基于场景的非参考预测帧和仅参考预测帧。该方法还可以包括通过考虑跨通信信道的带宽容量的比特率计算算法来计算跨通信信道的目标比特率。

2. 发明申请

US20130202036A1 Intra/Inter Mode Decision for Predictive Frame Encoding 有权
标题翻译：用于预测帧编码的帧内/帧间模式决定
公开(公告)号：US20130202036A1
公开(公告)日：2013-08-08
申请号：US12751211
申请日：2010-03-31
申请人： Soyeb Nagori , Manu Mathew , Pramod Kumar Swami
发明人： Soyeb Nagori , Manu Mathew , Pramod Kumar Swami
IPC分类号： H04N7/26
CPC分类号： H04N19/107 , H04N19/147 , H04N19/176 , H04N19/50
摘要： This invention predicts that intra mode prediction is more effective for the macroblocks where motion estimation in inter mode prediction fails. This failure is indicated by a large value of the inter mode SAD. This invention performs intra mode prediction for only macro blocks have larger inter mode SADs. The definition of a large inter mode SAD differs for different content. This invention compares the inter mode SAD of a current macroblock with an adaptive threshold. This adaptive threshold depends on the average and variance of the SADs of the previous predicted frame. An adaptive threshold is calculated for each new predictive frame.
摘要翻译：本发明预测帧模式预测对于帧间模式预测中的运动估计失败的宏块更有效。该故障由间隔模式SAD的大值指示。本发明仅对具有较大的帧间模式SAD的宏块执行帧内模式预测。大型inter模式SAD的定义因不同内容而异。本发明将当前宏块的帧间模式SAD与自适应阈值进行比较。该自适应阈值取决于先前预测帧的SAD的平均值和方差。为每个新的预测帧计算自适应阈值。

3. 发明授权

US09560350B2 Intra/inter mode decision for predictive frame encoding 有权
标题翻译：用于预测帧编码的帧内/帧间模式决定
公开(公告)号：US09560350B2
公开(公告)日：2017-01-31
申请号：US12751211
申请日：2010-03-31
申请人： Soyeb Nagori , Manu Mathew , Pramod Kumar Swami
发明人： Soyeb Nagori , Manu Mathew , Pramod Kumar Swami
IPC分类号： H04N7/26 , H04N19/50 , H04N19/176 , H04N19/147 , H04N19/107
CPC分类号： H04N19/107 , H04N19/147 , H04N19/176 , H04N19/50
摘要： This invention predicts that intra mode prediction is more effective for the macro blocks where motion estimation in inter mode prediction fails. This failure is indicated by a large value of the inter mode SAD. This invention performs intra mode prediction for only macro blocks have larger inter mode SADs. The definition of a large inter mode SAD differs for different content. This invention compares the inter mode SAD of a current macroblock with an adaptive threshold. This adaptive threshold depends on the average and variance of the SADs of the previous predicted frame. An adaptive threshold is calculated for each new predictive frame.
摘要翻译：本发明预测帧模式预测对于帧间模式预测中的运动估计失败的宏块更有效。该故障由间隔模式SAD的大值指示。本发明仅对具有较大的帧间模式SAD的宏块执行帧内模式预测。大型inter模式SAD的定义因不同内容而异。本发明将当前宏块的帧间模式SAD与自适应阈值进行比较。该自适应阈值取决于先前预测帧的SAD的平均值和方差。为每个新的预测帧计算自适应阈值。

4. 发明申请

US20090252426A1 LINEAR TEMPORAL REFERENCE SCHEME HAVING NON-REFERENCE PREDICTIVE FRAMES 有权
标题翻译：具有非参考预测框架的线性时间参考方案
公开(公告)号：US20090252426A1
公开(公告)日：2009-10-08
申请号：US12060887
申请日：2008-04-02
申请人： MANU MATHEW , Soyeb Nagori , Pramod Kumar Swami
发明人： MANU MATHEW , Soyeb Nagori , Pramod Kumar Swami
IPC分类号： G06K9/36
CPC分类号： H04N19/31 , H04N19/107 , H04N19/114 , H04N19/124 , H04N19/139 , H04N19/142 , H04N19/159 , H04N19/164 , H04N19/172 , H04N19/177 , H04N19/56 , H04N19/61
摘要： The method, system, and apparatus of linear temporal reference scheme having non-reference predictive frames is disclosed. In one embodiment, a method of a temporal reference scheme includes creating a non-reference predictive frame and a reference predictive frame from a reference frame, increasing a quantization factor of the non- and reference predictive frame by a threshold value, and decreasing the quantization factor of the reference predictive frame by the threshold value. The method may include toggling between the temporal reference scheme and another temporal reference scheme in which there may be no non-reference predictive frames and only reference predictive frames based on a scenario. The method may also include calculating a target bit rate across a communication channel through a bit rate calculation algorithm that considers a bandwidth capacity across the communication channel.
摘要翻译：公开了具有非参考预测帧的线性时间参考方案的方法，系统和装置。在一个实施例中，时间参考方案的方法包括从参考帧创建非参考预测帧和参考预测帧，将非参考预测帧的量化因子增加阈值，并减少量化参考预测帧的因子乘以阈值。该方法可以包括在时间参考方案和另一个时间参考方案之间切换，其中可以不存在基于场景的非参考预测帧和仅参考预测帧。该方法还可以包括通过考虑跨通信信道的带宽容量的比特率计算算法来计算跨通信信道的目标比特率。

5. 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.

6. 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。

7. 发明申请

US20100315557A1 REDUCING FLICKER IN THE DISPLAY OF VIDEO STREAMS 有权
标题翻译：在视频流的显示中减少闪光
公开(公告)号：US20100315557A1
公开(公告)日：2010-12-16
申请号：US12794942
申请日：2010-06-07
申请人： Manu Mathew , Soyeb Nagori , Akira Osamoto
发明人： Manu Mathew , Soyeb Nagori , Akira Osamoto
IPC分类号： H04N5/00
CPC分类号： H04N19/198 , H04N19/126 , H04N19/132 , H04N19/14 , H04N19/176 , H04N19/18 , H04N19/196 , H04N19/61
摘要： Image frames of a video stream are encoded with the aim of reducing flicker in the video stream when displayed. In one embodiment, the quantization parameter used to quantize an image frame is capped to be not greater than a quantization parameter used to quantize an immediately previous image frame. In another embodiment, the quantization step size used to quantize a macro-block of an image frame is computed based on the value of a quantization error of a co-located macro-block in an immediately previous image frame. In yet another embodiment, macro-block transform coefficients corresponding to high-frequency components are quantized using relatively higher quantization parameter values if the image frame is deemed to contain high activity. In yet another embodiment, flicker-prone macro-blocks of a source frame are replaced by corresponding best-match macro-blocks of a previous reconstructed frame, prior to being encoded.
摘要翻译：视频流的图像帧被编码，目的是在显示时减少视频流中的闪烁。在一个实施例中，用于量化图像帧的量化参数被限制为不大于用于量化紧接在前的图像帧的量化参数。在另一个实施例中，用于量化图像帧的宏块的量化步长基于紧邻的前一图像帧中的同位置宏块的量化误差的值来计算。在另一个实施例中，如果图像帧被认为包含高活动性，则使用相对较高的量化参数值来量化对应于高频分量的宏块变换系数。在另一个实施例中，在被编码之前，源帧的闪烁容易的宏块被先前重建帧的对应的最佳匹配宏块替代。

8. 发明授权

US09152875B2 Preserving text quality in video encoding 有权
标题翻译：在视频编码中保持文本质量
公开(公告)号：US09152875B2
公开(公告)日：2015-10-06
申请号：US12777433
申请日：2010-05-11
申请人： Manu Mathew , Soyeb Nagori
发明人： Manu Mathew , Soyeb Nagori
IPC分类号： G06K9/32 , H04N19/149 , H04N19/61 , H04N19/124 , H04N19/14 , H04N19/152
CPC分类号： G06K9/3266 , H04N19/124 , H04N19/14 , H04N19/149 , H04N19/152 , H04N19/61
摘要： A video encoder receives a macro-block of an image frame, and determines whether the macro-block contains text. The video encoder computes a quantization parameter for quantizing the macro-block, with the quantization parameter computed to be smaller if the macro-block is determined to contain text. The video encoder encodes the macro-block using the quantization parameter. Text quality in the encoded macro-block is preserved.
摘要翻译：视频编码器接收图像帧的宏块，并且确定宏块是否包含文本。视频编码器计算用于量化宏块的量化参数，如果宏块被确定为包含文本，则计算的量化参数更小。视频编码器使用量化参数对宏块进行编码。编码宏块中的文本质量得以保留。

9. 发明授权

US08582645B2 Reducing flicker in the display of video streams 有权
标题翻译：降低视频流显示中的闪烁
公开(公告)号：US08582645B2
公开(公告)日：2013-11-12
申请号：US12794942
申请日：2010-06-07
申请人： Manu Mathew , Soyeb Nagori , Akira Osamoto
发明人： Manu Mathew , Soyeb Nagori , Akira Osamoto
IPC分类号： H04N5/00
CPC分类号： H04N19/198 , H04N19/126 , H04N19/132 , H04N19/14 , H04N19/176 , H04N19/18 , H04N19/196 , H04N19/61
摘要： Image frames of a video stream are encoded with the aim of reducing flicker in the video stream when displayed. In one embodiment, the quantization parameter used to quantize an image frame is capped to be not greater than a quantization parameter used to quantize an immediately previous image frame. In another embodiment, the quantization step size used to quantize a macro-block of an image frame is computed based on the value of a quantization error of a co-located macro-block in an immediately previous image frame. In yet another embodiment, macro-block transform coefficients corresponding to high-frequency components are quantized using relatively higher quantization parameter values if the image frame is deemed to contain high activity. In yet another embodiment, flicker-prone macro-blocks of a source frame are replaced by corresponding best-match macro-blocks of a previous reconstructed frame, prior to being encoded.
摘要翻译：视频流的图像帧被编码，目的是在显示时减少视频流中的闪烁。在一个实施例中，用于量化图像帧的量化参数被限制为不大于用于量化紧接在前的图像帧的量化参数。在另一个实施例中，用于量化图像帧的宏块的量化步长基于紧邻的前一图像帧中的同位置宏块的量化误差的值来计算。在另一个实施例中，如果图像帧被认为包含高活动性，则使用相对较高的量化参数值来量化对应于高频分量的宏块变换系数。在另一个实施例中，在被编码之前，源帧的闪烁容易的宏块被先前重建帧的对应的最佳匹配宏块替代。

10. 发明申请

US20100316119A1 PRESERVING TEXT QUALITY IN VIDEO ENCODING 有权
标题翻译：保存视频编码中的文本质量
公开(公告)号：US20100316119A1
公开(公告)日：2010-12-16
申请号：US12777433
申请日：2010-05-11
申请人： Manu Mathew , Soyeb Nagori
发明人： Manu Mathew , Soyeb Nagori
IPC分类号： H04N7/26
CPC分类号： G06K9/3266 , H04N19/124 , H04N19/14 , H04N19/149 , H04N19/152 , H04N19/61
摘要： A video encoder receives a macro-block of an image frame, and determines whether the macro-block contains text. The video encoder computes a quantization parameter for quantizing the macro-block, with the quantization parameter computed to be smaller if the macro-block is determined to contain text. The video encoder encodes the macro-block using the quantization parameter. Text quality in the encoded macro-block is preserved.
摘要翻译：视频编码器接收图像帧的宏块，并且确定宏块是否包含文本。视频编码器计算用于量化宏块的量化参数，如果宏块被确定为包含文本，则计算的量化参数更小。视频编码器使用量化参数对宏块进行编码。编码宏块中的文本质量得以保留。

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