公开(公告)号：US09338473B2

公开(公告)日：2016-05-10

申请号：US13274881

申请日：2011-10-17

申请人： David Zhao ,  Mattias Nilsson ,  Renat Vafin ,  Andrei Jefremov ,  Sören Vang Andersen ,  Pontus Carlsson

发明人： David Zhao ,  Mattias Nilsson ,  Renat Vafin ,  Andrei Jefremov ,  Sören Vang Andersen ,  Pontus Carlsson

IPC分类号： H04N7/12 ,  H04N19/58 ,  H04N19/176 ,  H04N19/147 ,  H04N19/107 ,  H04N19/166 ,  H04N19/19 ,  H04N19/89 ,  H04B15/00 ,  H04L12/26

CPC分类号： H04N19/58 ,  H04N19/107 ,  H04N19/147 ,  H04N19/166 ,  H04N19/176 ,  H04N19/19 ,  H04N19/89

摘要： A method of performing a rate-distortion optimization process comprising, for each of a plurality of target image portions to be encoded in each of a plurality of frames, selecting a preferred one of a set of encoding modes by optimizing a function comprising an estimate of distortion for the target image portion and a measure of bit rate required to encode the target image portion, wherein the estimate of distortion is based on source coding distortion and an estimate of a distortion that would be experienced due to possible loss over the channel; encoding the target image portion into the encoded video stream using the selected encoding mode; and transmitting the encoded video stream over the channel. The rate-distortion optimization process for a current one of the frames is performed in dependence on feedback received from the receiving terminal based on an earlier one of the frames.

摘要翻译： 一种执行速率失真优化处理的方法，包括对于要在多个帧中的每一帧中编码的多个目标图像部分中的每一个，通过优化包括估计的估计的函数来选择一组编码模式中的优选的一个 用于目标图像部分的失真和对目标图像部分进行编码所需的比特率的度量，其中失真估计基于源编码失真和由于信道上可能的损失而将经历的失真的估计; 使用所选择的编码模式将目标图像部分编码成编码视频流; 以及通过所述信道发送所述经编码的视频流。 根据基于较早的帧之一从接收终端接收到的反馈来执行当前帧之一的速率失真优化处理。

公开(公告)号：US20130058405A1

公开(公告)日：2013-03-07

申请号：US13274881

申请日：2011-10-17

申请人： David Zhao ,  Mattias Nilsson ,  Renat Vafin ,  Andrei Jefremov ,  Sören Vang Andersen ,  Pontus Carlsson

发明人： David Zhao ,  Mattias Nilsson ,  Renat Vafin ,  Andrei Jefremov ,  Sören Vang Andersen ,  Pontus Carlsson

IPC分类号： H04N7/12

CPC分类号： H04N19/58 ,  H04N19/107 ,  H04N19/147 ,  H04N19/166 ,  H04N19/176 ,  H04N19/19 ,  H04N19/89

摘要： A method of performing a rate-distortion optimization process comprising, for each of a plurality of target image portions to be encoded in each of a plurality of frames, selecting a preferred one of a set of encoding modes by optimizing a function comprising an estimate of distortion for the target image portion and a measure of bit rate required to encode the target image portion, wherein the estimate of distortion is based on source coding distortion and an estimate of a distortion that would be experienced due to possible loss over the channel; encoding the target image portion into the encoded video stream using the selected encoding mode; and transmitting the encoded video stream over the channel. The rate-distortion optimization process for a current one of the frames is performed in dependence on feedback received from the receiving terminal based on an earlier one of the frames.

摘要翻译： 一种执行速率失真优化处理的方法，包括对于要在多个帧中的每一帧中编码的多个目标图像部分中的每一个，通过优化包括估计的估计的函数来选择一组编码模式中的优选的一个 用于目标图像部分的失真和对目标图像部分进行编码所需的比特率的度量，其中失真估计基于源编码失真和由于信道上可能的损失而将经历的失真的估计; 使用所选择的编码模式将目标图像部分编码成编码视频流; 以及通过所述信道发送所述经编码的视频流。 根据基于较早的帧之一从接收终端接收到的反馈来执行当前帧之一的速率失真优化处理。

公开(公告)号：US20120170658A1

公开(公告)日：2012-07-05

申请号：US13340023

申请日：2011-12-29

申请人： Ian Anderson ,  Andrei Jefremov ,  Renat Vafin ,  David Zhao

发明人： Ian Anderson ,  Andrei Jefremov ,  Renat Vafin ,  David Zhao

IPC分类号： H04N7/32 ,  H04N7/26

CPC分类号： H04N19/895

摘要： In an embodiment, a system includes a receiver for receiving a video signal over a lossy medium and a decoder coupled to the receiver and arranged to decode the video signal for output to a display. The decoder includes a concealment module for regenerating a portion of image data lost from the video signal over said medium, by interpolating or extrapolating from other image data of the video signal received over the medium. The decoder comprises a controller configured to select, based on a measure of loss effect estimated for the portion of image data, whether (i) to apply the concealment module to regenerate the portion of image data, or alternatively (ii) to freeze preceding image data of the video signal in place of the portion of image data.

摘要翻译： 在一个实施例中，系统包括用于通过有损介质接收视频信号的接收器和耦合到接收器的解码器，并且被配置为解码视频信号以输出到显示器。 解码器包括隐藏模块，用于通过在媒体上接收的视频信号的其他图像数据进行内插或外推，再现通过所述介质从视频信号丢失的图像数据的一部分。 解码器包括：控制器，被配置为基于对图像数据的部分估计的损失影响的度量来选择是否应用隐藏模块来再生图像数据的一部分，或者替换地（ii）冻结前一图像 视频信号的数据代替图像数据的一部分。

公开(公告)号：US08711233B2

公开(公告)日：2014-04-29

申请号：US13296941

申请日：2011-11-15

申请人： Andrei Jefremov ,  David Zhao ,  Pontus Carlsson

发明人： Andrei Jefremov ,  David Zhao ,  Pontus Carlsson

IPC分类号： H04N5/228

CPC分类号： H04N5/23264 ,  H04N5/23258 ,  H04N5/23267 ,  H04N5/3454

摘要： Method, device and computer program product for stabilizing a video signal. A plurality of frames of the video signal are captured using a camera. A motion sensor associated with the camera is used to generate a plurality of samples representing motion of the camera. The samples are used to determine a displacement of the camera between a first time and a second time, wherein the first time corresponds to an exposure time midpoint of a first frame of the video signal and the second time corresponds to an exposure time midpoint of a second frame of the video signal. The determined displacement is used to compensate for motion in the video signal between the first and second frames caused by the motion of the camera, to thereby stabilize the video signal.

摘要翻译： 用于稳定视频信号的方法，设备和计算机程序产品。 使用相机捕获多个视频信号的帧。 使用与相机相关联的运动传感器来产生表示相机运动的多个样本。 样本用于确定相机在第一时间和第二时间之间的位移，其中第一时间对应于视频信号的第一帧的曝光时间中点，而第二时间对应于视频信号的曝光时间中点 视频信号的第二帧。 确定的位移用于补偿由相机的运动引起的第一帧和第二帧之间的视频信号中的运动，从而稳定视频信号。

公开(公告)号：US20130101030A1

公开(公告)日：2013-04-25

申请号：US13341464

申请日：2011-12-30

申请人： Pontus Carlsson ,  Andrei Jefremov ,  Sergey Sablin ,  David Zhao

发明人： Pontus Carlsson ,  Andrei Jefremov ,  Sergey Sablin ,  David Zhao

IPC分类号： H04N7/26

CPC分类号： H04N19/58 ,  H04N19/423 ,  H04N19/46 ,  H04N19/573 ,  H04N19/70

摘要： In an embodiment, a method of transmitting video data includes at an encoder encoding the video data as a plurality of frames, including reference frames and intermediate frames, at least some of which are encoded based on multiple reference frames; at the encoder maintaining for each frame a current list of reference frames; and transmitting the plurality of frames, each frame being transmitted in association with a current list of reference frames for that frame.

摘要翻译： 在一个实施例中，传输视频数据的方法包括编码视频数据作为多个帧的编码器，包括参考帧和中间帧，其中至少一些基于多个参考帧进行编码; 在编码器处为每个帧维护参考帧的当前列表; 并且发送多个帧，每个帧与该帧的参考帧的当前列表相关联地发送。

公开(公告)号：US20130093906A1

公开(公告)日：2013-04-18

申请号：US13339879

申请日：2011-12-29

申请人： Pontus Carlsson ,  Andrei Jefremov ,  Sergey Sablin ,  David Zhao

发明人： Pontus Carlsson ,  Andrei Jefremov ,  Sergey Sablin ,  David Zhao

IPC分类号： H04N5/228

CPC分类号： H04N5/23248 ,  H04N5/23258 ,  H04N5/23267

摘要： Method, device and computer program product for stabilizing a received video signal. A plurality of frames of the video signal is captured using a camera. The video signal is transmitted as an encoded bit stream. Displacement of the camera between successive frames is determined from a motion indication in the bit stream. The determined displacement is used to compensate for motion in the video signal between successive frames caused by the motion of the camera, to thereby stabilize the video signal.

摘要翻译： 用于稳定接收到的视频信号的方法，设备和计算机程序产品。 使用照相机拍摄视频信号的多个帧。 视频信号作为编码比特流发送。 摄像机在连续帧之间的位移由比特流中的运动指示确定。 确定的位移用于补偿由相机的运动引起的连续帧之间的视频信号中的运动，从而稳定视频信号。

公开(公告)号：US20120307086A1

公开(公告)日：2012-12-06

申请号：US13296941

申请日：2011-11-15

申请人： Andrei Jefremov ,  David Zhao ,  Pontus Carlsson

发明人： Andrei Jefremov ,  David Zhao ,  Pontus Carlsson

IPC分类号： H04N5/228

CPC分类号： H04N5/23264 ,  H04N5/23258 ,  H04N5/23267 ,  H04N5/3454

摘要： Method, device and computer program product for stabilizing a video signal. A plurality of frames of the video signal are captured using a camera. A motion sensor associated with the camera is used to generate a plurality of samples representing motion of the camera. The samples are used to determine a displacement of the camera between a first time and a second time, wherein the first time corresponds to an exposure time midpoint of a first frame of the video signal and the second time corresponds to an exposure time midpoint of a second frame of the video signal. The determined displacement is used to compensate for motion in the video signal between the first and second frames caused by the motion of the camera, to thereby stabilize the video signal.

摘要翻译： 用于稳定视频信号的方法，设备和计算机程序产品。 使用相机捕获多个视频信号的帧。 使用与相机相关联的运动传感器来产生表示相机运动的多个样本。 样本用于确定相机在第一时间和第二时间之间的位移，其中第一时间对应于视频信号的第一帧的曝光时间中点，而第二时间对应于视频信号的曝光时间中点 视频信号的第二帧。 确定的位移用于补偿由相机的运动引起的第一帧和第二帧之间的视频信号中的运动，从而稳定视频信号。

公开(公告)号：US09762799B2

公开(公告)日：2017-09-12

申请号：US13339879

申请日：2011-12-29

申请人： Pontus Carlsson ,  Andrei Jefremov ,  Sergey Sablin ,  David Zhao

发明人： Pontus Carlsson ,  Andrei Jefremov ,  Sergey Sablin ,  David Zhao

IPC分类号： H04N5/232

CPC分类号： H04N5/23248 ,  H04N5/23258 ,  H04N5/23267

摘要： Method, device and computer program product for stabilizing a received video signal. A plurality of frames of the video signal is captured using a camera. The video signal is transmitted as an encoded bit stream. Displacement of the camera between successive frames is determined from a motion indication in the bit stream. The determined displacement is used to compensate for motion in the video signal between successive frames caused by the motion of the camera, to thereby stabilize the video signal.

公开(公告)号：US20130259114A1

公开(公告)日：2013-10-03

申请号：US13536346

申请日：2012-06-28

申请人： Pontus Carlsson ,  Andrei Jefremov ,  Sergey Sablin ,  David Zhao

发明人： Pontus Carlsson ,  Andrei Jefremov ,  Sergey Sablin ,  David Zhao

IPC分类号： H04N11/02

CPC分类号： H04N19/167 ,  H04N19/124 ,  H04N19/17 ,  H04N19/46

摘要： The invention relates to a method of encoding a video stream comprising, receiving a video signal comprising a plurality of frames, each frame comprising one or more portion of video data displaying to a user a video image derived from the video signal; receiving from the user selection of at least one region in the video image, the region represented by a portion of video data; and encoding the video signal, said encoding comprising encoding the portion of video data corresponding to the at least one selected region at a higher quality level than other portions of the video data in the video stream.

摘要翻译： 本发明涉及一种对视频流进行编码的方法，包括：接收包括多个帧的视频信号，每个帧包括视频数据的一个或多个部分向用户显示从视频信号导出的视频图像; 从所述用户接收所述视频图像中的至少一个区域的选择，所述区域由视频数据的一部分表示; 并且对所述视频信号进行编码，所述编码包括以与所述视频流中的视频数据的其他部分相比更高的质量水平对与所述至少一个所选区域相对应的视频数据的部分进行编码。

公开(公告)号：US20130058232A1

公开(公告)日：2013-03-07

申请号：US13328089

申请日：2011-12-16

申请人： Karlheinz Wurm ,  Andrei Jefremov ,  David Zhao

发明人： Karlheinz Wurm ,  Andrei Jefremov ,  David Zhao

IPC分类号： H04W24/00

CPC分类号： H04W28/06 ,  H04L12/5692 ,  H04L43/0835 ,  H04L43/0858 ,  H04L47/25 ,  H04L65/80 ,  H04L67/2828 ,  H04N19/00 ,  H04N19/102 ,  H04N19/156 ,  H04N19/164 ,  H04N19/42 ,  H04N19/46

摘要： According to an embodiment, a mobile device includes wireless access circuitry configured to access a wireless communication network; a processor for executing a communication client application to conduct a packet-based call with a remote device via a channel established over the wireless communication network, the communication client application configured to monitor at least one network parameter; a hardware processing module selectively operable to implement a processing function; a software processing module selectively executable to implement said processing function; and a selection mechanism for supplying the call to one of the hardware processing module and software processing module based on the at least one monitored network parameter.

摘要翻译： 根据实施例，移动设备包括被配置为接入无线通信网络的无线接入电路; 处理器，用于执行通信客户端应用以经由无线通信网络建立的信道与远程设备进行基于分组的呼叫，所述通信客户端应用被配置为监视至少一个网络参数; 硬件处理模块可选地可操作以实现处理功能; 可选地执行以实现所述处理功能的软件处理模块; 以及选择机构，用于基于所述至少一个被监视的网络参数向所述硬件处理模块和软件处理模块之一提供呼叫。