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51. 发明申请

US20120281715A1 ADAPTIVE BANDWIDTH ESTIMATION 有权
标题翻译：自适应带宽估计
公开(公告)号：US20120281715A1
公开(公告)日：2012-11-08
申请号：US13085456
申请日：2011-04-12
申请人： Hassan A. Shojania , Hyeonkuk Jeong , Joe S. Abuan , Roberto Garcia, JR. , Thomas C. Jansen , James O. Normile , Hsi-Jung Wu , Yan Yang , Xiaosong Zhou
发明人： Hassan A. Shojania , Hyeonkuk Jeong , Joe S. Abuan , Roberto Garcia, JR. , Thomas C. Jansen , James O. Normile , Hsi-Jung Wu , Yan Yang , Xiaosong Zhou
IPC分类号： H04J3/22
CPC分类号： H04L43/0882 , H04L43/10
摘要： Some embodiments provide a method of combining multiple streams of data packets into a single combined stream in a manner that facilitates accurate estimation of bandwidth of a connection over a network between two devices. When combining the streams into the combined stream, the method associates a set of packets from a first stream and a reference packet from a second stream to form a longer sequence of packets in the combined stream. The method sends the combined stream from a first device to a second device so that the second device can estimate the bandwidth of the connection between the first and second devices based on the inter-arrival times of the packets in the sequence of packets.
摘要翻译：一些实施例提供了一种将多个数据分组流合并为单个组合流的方法，其方式是促进通过两个设备之间的网络上的连接的带宽的精确估计。当将流合并到组合流中时，该方法将来自第一流的一组分组和来自第二个流的参考分组相关联，以在组合流中形成更长的分组序列。该方法将组合流从第一设备发送到第二设备，使得第二设备可以基于分组序列中的分组的到达之间时间来估计第一和第二设备之间的连接的带宽。

52. 发明授权

US08270498B2 Dynamic dithering for video compression 有权
标题翻译：用于视频压缩的动态抖动
公开(公告)号：US08270498B2
公开(公告)日：2012-09-18
申请号：US12463859
申请日：2009-05-11
申请人： Gianluca Filippini , Hsi-Jung Wu , James Oliver Normile , Xiaojin Shi , Xiaosong Zhou , Ionut Hristodorescu
发明人： Gianluca Filippini , Hsi-Jung Wu , James Oliver Normile , Xiaojin Shi , Xiaosong Zhou , Ionut Hristodorescu
IPC分类号： H04N7/12 , G06K9/40
CPC分类号： H04N19/90 , H04N19/124 , H04N19/136 , H04N19/154 , H04N19/86
摘要： A method and device for dithering video from a decoder. The method and device provide: selecting a segment of video frames from the video; computing a noise map for the segment of the video, the noise map computed from differences among pixels selected from spatially-distributed sampling patterns in the segment; determining contours of quantization artifacts within the video frame based on the noise map and a histogram of pixel values in the video frame; computing a gradient measurement of pixel values along the contours; identifying regions along the contours of quantization artifacts to apply dithering based on the noise map and the gradient measurement; determining a dithering strength based on the noise map and the gradient measurement; and applying dithering noise to the identified regions at the determined dithering strength.
摘要翻译：一种从解码器抖动视频的方法和装置。该方法和设备提供：从视频中选择一段视频帧; 计算视频段的噪声映射，根据从片段中的空间分布采样模式中选择的像素之间的差异计算的噪声图; 基于噪声图和视频帧中的像素值的直方图确定视频帧内的量化伪像的轮廓; 计算沿着轮廓的像素值的梯度测量; 识别沿着量化伪影轮廓的区域，以基于噪声图和梯度测量应用抖动; 基于噪声图和梯度测量确定抖动强度; 并以确定的抖动强度对所识别的区域施加抖动噪声。

53. 发明授权

US08269816B2 Video encoding in a video conference 有权
标题翻译：视频会议中的视频编码
公开(公告)号：US08269816B2
公开(公告)日：2012-09-18
申请号：US12702287
申请日：2010-02-08
申请人： Thomas Pun , Hsi Jung Wu , Hyeonkuk Jeong
发明人： Thomas Pun , Hsi Jung Wu , Hyeonkuk Jeong
IPC分类号： H04N7/14
CPC分类号： H04N7/15
摘要： Some embodiments provide an architecture for establishing multi-participant video conferences. This architecture has a central distributor that receives video images from two or more participants. From the received images, the central distributor generates composite images that the central distributor transmits back to the participants. Each composite image includes a set of sub images, where each sub image belongs to one participant. In some embodiments, the central distributor saves network bandwidth by removing each particular participant's image from the composite image that the central distributor sends to the particular participant. In some embodiments, images received from each participant are arranged in the composite in a non-interleaved manner. For instance, in some embodiments, the composite image includes at most one sub-image for each participant, and no two sub-images are interleaved.
摘要翻译：一些实施例提供了用于建立多参与者视频会议的架构。这种架构有一个中央分配器，可以接收来自两个或更多参与者的视频图像。从接收到的图像中，中心分配器生成中央分配器传送回参与者的合成图像。每个合成图像包括一组子图像，其中每个子图像属于一个参与者。在一些实施例中，中央分配器通过从中央分配器向特定参与者发送的合成图像中移除每个特定参与者的图像来节省网络带宽。在一些实施例中，从每个参与者接收的图像以非交错方式排列在复合体中。例如，在一些实施例中，合成图像对于每个参与者至多包括一个子图像，并且没有两个子图像被交织。

54. 发明授权

US08208536B2 Method and apparatus for encoding using single pass rate controller 有权
标题翻译：使用单速率控制器进行编码的方法和装置
公开(公告)号：US08208536B2
公开(公告)日：2012-06-26
申请号：US11118618
申请日：2005-04-28
申请人： Thomas Pun , Hsi Jung Wu , Adriana Dumitras
发明人： Thomas Pun , Hsi Jung Wu , Adriana Dumitras
IPC分类号： H04N7/12
CPC分类号： H04N19/142 , H04N19/115 , H04N19/124 , H04N19/15 , H04N19/159 , H04N19/172
摘要： A method is used for specifying a bit allocation for encoding a set of images in a sequence of video images. The method computes a masking value for one or more images. The method computes a bit allocation for a current image based on the computed masking value of one or more images. The method further ascertains a total number of bits used for images that have been already encoded before computing the bit allocation. The computed bit allocation for the current image is also based on the total number of bits used. The method specifies a bit allocation for the current image by specifying a quantization parameter (QP) value for the current image. The method then adjusts the specified QP value based on a categorization of the current image.
摘要翻译：一种方法用于指定用于编码视频图像序列中的一组图像的比特分配。该方法计算一个或多个图像的掩蔽值。该方法基于所计算的一个或多个图像的屏蔽值来计算当前图像的位分配。该方法进一步确定在计算比特分配之前已经被编码的图像的总位数。当前图像的计算比特分配也基于所使用的总比特数。该方法通过指定当前图像的量化参数（QP）值来指定当前图像的位分配。然后，该方法基于当前图像的分类来调整指定的QP值。

55. 发明申请

US20120008695A1 ENCODING WITH VISUAL MASKING 有权
标题翻译：编码与可视化屏蔽
公开(公告)号：US20120008695A1
公开(公告)日：2012-01-12
申请号：US13179476
申请日：2011-07-08
申请人： Hsi Jung Wu , Thomas Pun
发明人： Hsi Jung Wu , Thomas Pun
IPC分类号： H04N7/26
CPC分类号： H04N19/192 , H04N19/124 , H04N19/137 , H04N19/14 , H04N19/15 , H04N19/172 , H04N19/176 , H04N19/61
摘要： Some embodiments of the invention encode a sequence of video images based on “visual masking” attributes of the video images and/or portions of the video images. Visual masking of an image or a portion of the image is an indication of how much coding artifacts can be tolerated in the image or image portion. To express the visual masking attribute of an image or an image portion, some embodiments compute a visual masking strength that quantifies the brightness energy of the image or the image portion. In some embodiments, the brightness energy is measured as a function of the average luma or pixel energy of the image or image portion.
摘要翻译：本发明的一些实施例基于视频图像和/或视频图像的部分的“视觉掩蔽”属性来编码视频图像序列。图像或图像的一部分的视觉遮蔽是图像或图像部分中可以容许多少编码伪像的指示。为了表达图像或图像部分的视觉掩蔽属性，一些实施例计算量化图像或图像部分的亮度能量的视觉掩蔽强度。在一些实施例中，根据图像或图像部分的平均亮度或像素能量来测量亮度能量。

56. 发明申请

US20110299588A1 RATE CONTROL IN VIDEO COMMUNICATION VIA VIRTUAL TRANSMISSION BUFFER 审中-公开
标题翻译：通过虚拟传输缓冲区进行视频通信中的速率控制
公开(公告)号：US20110299588A1
公开(公告)日：2011-12-08
申请号：US12882522
申请日：2010-09-15
申请人： Xiaosong ZHOU , Hsi-Jung WU
发明人： Xiaosong ZHOU , Hsi-Jung WU
IPC分类号： H04N7/26
CPC分类号： H04N21/2402 , H04N19/152 , H04N21/2401
摘要： Embodiments of the present invention provide a video encoding system that may include a coding engine to code an input video signal according to a video compression process, compression of each portion of the input signal performed according to coding parameters assigned to the respective portion. The video encoding system may also include a rate controller to select coding parameters of each portion of the input signal, the rate controller estimating delay of delivery of coded video data by a delivery network according to a leaky bucket modeling process and selecting coding parameters of a portion to be coded based at least in part on the estimated delay.
摘要翻译：本发明的实施例提供一种视频编码系统，其可以包括根据视频压缩处理对输入视频信号进行编码的编码引擎，根据分配给各个部分的编码参数对输入信号的每个部分进行压缩。视频编码系统还可以包括速率控制器，用于选择输入信号的每个部分的编码参数，速率控制器根据泄漏桶建模过程估计由传送网络传送编码视频数据的延迟，并且选择编码参数至少部分地基于估计的延迟来编码要编码的部分。

57. 发明申请

US20110249729A1 ERROR RESILIENT HIERARCHICAL LONG TERM REFERENCE FRAMES 审中-公开
标题翻译：错误的分层分析长期参考框架
公开(公告)号：US20110249729A1
公开(公告)日：2011-10-13
申请号：US12794580
申请日：2010-06-04
申请人： Xiaosong ZHOU , Dazhong Zhang , Davide Concion , Hsi-Jung Wu , Douglas Scott Price
发明人： Xiaosong ZHOU , Dazhong Zhang , Davide Concion , Hsi-Jung Wu , Douglas Scott Price
IPC分类号： H04N7/26
CPC分类号： H04N19/105 , H04N19/114 , H04N19/166 , H04N19/58 , H04N19/89
摘要： Embodiments of the present invention provide a video encoding system that codes video sequence into a multi-level hierarchy based on levels of long term reference (LTR) frames. According to the present invention, an encoder designates a reference frame as a long term reference (LTR) frame and transmits the LTR frame to a receiver. Upon receiving feedback from the receiver acknowledging receipt of the LTR frame, the encoder periodically codes subsequent frames as reference frames using the acknowledged LTR frame as a reference and designates subsequent reference frames as secondary LTR frames. A determined number of frames after each secondary LTR frame may be coded using a preceding secondary LTR frame as a reference.
摘要翻译：本发明的实施例提供了一种视频编码系统，其基于长期参考（LTR）帧的级别将视频序列编码为多级层级。根据本发明，编码器将参考帧指定为长期参考（LTR）帧，并将LTR帧发送到接收机。在接收到来自确认接收到LTR帧的接收机的反馈时，编码器使用确认的LTR帧作为参考，将后续帧定时作为参考帧，并将后续参考帧指定为辅助LTR帧。每个辅助LTR帧之后的确定数量的帧可以使用先前的次级LTR帧作为参考进行编码。

58. 发明申请

US20110249078A1 Switching Cameras During a Video Conference of a Multi-Camera Mobile Device 有权
标题翻译：在多机相机移动设备的视频会议期间切换相机
公开(公告)号：US20110249078A1
公开(公告)日：2011-10-13
申请号：US12794775
申请日：2010-06-06
申请人： JOE S. ABUAN , DAVID A. ELDRED , HYEONKUK JEONG , ROBERTO GARCIA, JR. , HSI-JUNG WU , XIAOSONG ZHOU , ELIZABETH C. CRANFILL , JAMES O. NORMILE
发明人： JOE S. ABUAN , DAVID A. ELDRED , HYEONKUK JEONG , ROBERTO GARCIA, JR. , HSI-JUNG WU , XIAOSONG ZHOU , ELIZABETH C. CRANFILL , JAMES O. NORMILE
IPC分类号： H04N7/15
CPC分类号： H04N7/141 , G06F3/04817 , G06F3/04842 , G06F3/04886 , G06F9/451 , G09G5/14 , H04M1/72583 , H04N5/2258 , H04N5/2624 , H04N5/272 , H04N7/147 , H04N7/15
摘要： Some embodiments provide a method for conducting a video conference between a first mobile device and a second device. The first mobile device includes first and second cameras. The method selects the first camera for capturing images. The method transmits images captured by the first camera to the second device. The method receives selections of the second camera for capturing images during the video conference. The method terminates the transmission of images captured by the first camera and transmits images captured by the second camera of the first mobile device to the second device during the video conference.
摘要翻译：一些实施例提供了一种用于在第一移动设备和第二设备之间进行视频会议的方法。第一移动设备包括第一和第二相机。该方法选择用于捕获图像的第一相机。该方法将由第一相机拍摄的图像发送到第二设备。该方法在视频会议期间接收用于捕获图像的第二相机的选择。该方法终止由第一相机拍摄的图像的传输，并且在视频会议期间将由第一移动设备的第二相机拍摄的图像发送到第二设备。

59. 发明申请

US20110234430A1 COMPLEXITY-AWARE ENCODING 有权
标题翻译：复杂的编码
公开(公告)号：US20110234430A1
公开(公告)日：2011-09-29
申请号：US13156610
申请日：2011-06-09
申请人： Jim Normile , Thomas Pun , Xiaojin Shi , Xin Tong , Hsi-Jung Wu
发明人： Jim Normile , Thomas Pun , Xiaojin Shi , Xin Tong , Hsi-Jung Wu
IPC分类号： H03M7/34
CPC分类号： H04N19/154 , H04N19/156 , H04N19/164
摘要： Techniques for encoding data based at least in part upon an awareness of the decoding complexity of the encoded data and the ability of a target decoder to decode the encoded data are disclosed. In some embodiments, a set of data is encoded based at least in part upon a state of a target decoder to which the encoded set of data is to be provided. In some embodiments, a set of data is encoded based at least in part upon the states of multiple decoders to which the encoded set of data is to be provided.
摘要翻译：公开了至少部分地基于编码数据的解码复杂度的意识和目标解码器解码编码数据的能力对数据进行编码的技术。在一些实施例中，至少部分地基于要提供编码数据集合的目标解码器的状态对数据集进行编码。在一些实施例中，一组数据至少部分地基于要提供编码数据集的多个解码器的状态进行编码。

60. 发明授权

US07929778B2 Digital image coding system having self-adjusting selection criteria for selecting a transform function 有权
标题翻译：具有用于选择变换函数的自适应选择标准的数字图像编码系统
公开(公告)号：US07929778B2
公开(公告)日：2011-04-19
申请号：US12538850
申请日：2009-08-10
申请人： Hsi-Jung Wu , Yu Tina Tian , Jian Lu , Ke-Chiang Chu
发明人： Hsi-Jung Wu , Yu Tina Tian , Jian Lu , Ke-Chiang Chu
IPC分类号： G06K9/36 , G06K9/00
CPC分类号： G06T9/007 , H04N19/122 , H04N19/132 , H04N19/139 , H04N19/14 , H04N19/154 , H04N19/176 , H04N19/18 , H04N19/196 , H04N19/198 , H04N19/61
摘要： In a digital signal processing system, a method for selecting a transform function to apply to an input signal based on characteristics of the signal, and for self-adjusting criteria which are used in selecting a transform function to apply to a subsequent signal. Characteristics are obtained from the signal. The characteristics are compared to adjustable criteria which are used in selecting a transform function. Differing criteria are maintained for the different selectable transform functions. A record is maintained of transform functions selected and the particular characteristics that caused the selection. Based on the ability of a transform function to minimally define the coded signal, an inverse transform function is selected to decode the signal. The criteria used in selecting a transform function to apply to a subsequent signal are adjusted based on a quality measure of the decoded signal and the record of selected transform functions.
摘要翻译：在数字信号处理系统中，提供了一种用于根据信号的特性选择适用于输入信号的变换函数的方法，以及用于选择变换函数以应用于后续信号的自调整准则的方法。从信号获得特性。将特征与用于选择变换函数的可调标准进行比较。对于不同的可选变换函数维持不同的标准。保留所选择的变换函数和导致选择的特定特征的记录。基于变换函数最小化定义编码信号的能力，选择逆变换函数来对信号进行解码。基于解码信号的质量测量和所选择的变换函数的记录来调整用于选择应用于后续信号的变换函数的标准。

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