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111. 发明授权

US06229917B1 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：US06229917B1
公开(公告)日：2001-05-08
申请号：US09396084
申请日：1999-09-14
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： G06K900
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。

112. 发明授权

US09232233B2 Adaptive configuration of reference frame buffer based on camera and background motion 有权
标题翻译：基于相机和背景运动的参考帧缓冲器的自适应配置
公开(公告)号：US09232233B2
公开(公告)日：2016-01-05
申请号：US13175143
申请日：2011-07-01
申请人： Xiaosong Zhou , Hsi-Jung Wu , Yao-Chung Lin
发明人： Xiaosong Zhou , Hsi-Jung Wu , Yao-Chung Lin
IPC分类号： H04N7/32 , H04N19/58 , H04N19/196 , H04N19/105 , H04N19/139 , H04N19/172 , H04N19/46 , H04N19/61 , H04N19/109
CPC分类号： H04N19/58 , H04N19/105 , H04N19/109 , H04N19/139 , H04N19/172 , H04N19/197 , H04N19/46 , H04N19/61
摘要： In a video coding/decoding system, reference picture caches in a video coder and decoder may be partitioned dynamically based on camera and background motion can lead to improved coding efficiency and coding quality. When a camera is fixed and therefore exhibits low motion, a system may allocate larger portions of the reference picture cache to storage of long term reference frames. In this case, foreground elements of an image (for example, a person) may move in front of a relatively fixed background. Increasing the number of long term reference frames can increase the chances that, no matter where the foreground elements are within a frame currently being coded, the reference picture cache will contain at least one frame that provides an adequate prediction match to background elements within the new frame. Thus the background elements uncovered in the current frame can be coded at high quality with a low number of bits. When a camera exhibits high motion, the system may allocate larger portions of the reference picture cache to storage of short term reference frames.
摘要翻译：在视频编码/解码系统中，视频编码器和解码器中的参考图像高速缓存可以基于相机进行动态分割，并且背景运动可以提高编码效率和编码质量。当照相机固定并因此表现出低运动时，系统可以将较大部分的参考图像高速缓存分配给长期参考帧的存储。在这种情况下，图像的前景元素（例如，人）可以在相对固定的背景之前移动。增加长期参考帧的数量可以增加机会，无论前景元素在当前正被编码的帧内的何处，参考图像高速缓存将包含至少一个帧，其提供与新的背景元素内的足够的预测匹配帧。因此，当前帧中未覆盖的背景元素可以以低位数的高质量被编码。当相机呈现高运动时，系统可以将较大部分的参考图像高速缓存分配给短期参考帧的存储。

113. 发明申请

US20140072029A1 ADAPTIVE SCALER SWITCHING 有权
标题翻译：自适应分频器切换
公开(公告)号：US20140072029A1
公开(公告)日：2014-03-13
申请号：US13744049
申请日：2013-01-17
申请人： Jiefu ZHAI , Douglas PRICE , Albert KEINATH , Xiaosong ZHOU , Hsi-Jung WU
发明人： Jiefu ZHAI , Douglas PRICE , Albert KEINATH , Xiaosong ZHOU , Hsi-Jung WU
IPC分类号： H04N7/26
CPC分类号： H04N19/10 , H04N19/127 , H04N19/156 , H04N19/172 , H04N19/42 , H04N19/44 , H04N19/59
摘要： An adaptive scaler switching system may implement multiple scalers including both a software scaler and a hardware scaler, and a controller that may manage the switch between scalers by considering the real-time constraints of the system and the available system resources. Information about the availability of system resources may be received in real-time, for example the controller may receive information about the system thermal status, the timing requirements for processing the video data, the quality of the scaled data, and any other relevant system statistics that may affect the scaler switch decision. According to an embodiment, the system may maintain statistics in a table, and update the table information as necessary.
摘要翻译：自适应缩放器交换系统可以实现包括软件缩放器和硬件缩放器两者的多个定标器，以及可以通过考虑系统的实时约束和可用系统资源来管理定标器之间的切换的控制器。可以实时接收关于系统资源的可用性的信息，例如，控制器可以接收关于系统热状态，处理视频数据的时序要求，缩放数据的质量以及任何其它相关系统统计信息这可能会影响缩放器切换的决定。根据实施例，系统可以维护表中的统计信息，并根据需要更新表信息。

114. 发明申请

US20130297875A1 Encoding and Decoding Images 审中-公开
标题翻译：编码和解码图像
公开(公告)号：US20130297875A1
公开(公告)日：2013-11-07
申请号：US13854879
申请日：2013-04-01
申请人： Roger Kumar , Thomas Pun , Hsi Jung Wu , Christian Duvivier
发明人： Roger Kumar , Thomas Pun , Hsi Jung Wu , Christian Duvivier
IPC分类号： G06F12/08
CPC分类号： G06F12/0802 , H04N19/00 , H04N19/105 , H04N19/107 , H04N19/119 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/192 , H04N19/43 , H04N19/51 , H04N19/523 , H04N19/53 , H04N19/533 , H04N19/61
摘要： Some embodiments provide a method for encoding a first set of pixels in a first image by reference to a second image in a video sequence. In a first search window within a second image, the method searches to identify a first particular portion in the second image that best matches the first set of pixels in the first image. In the first search window within the second image, the method identifies a first location corresponding to the first particular portion. In a second search window within the second image, the method then searches to identify a second particular portion in the second image that best matches the first set of pixels in the first image, where the second search window is defined about the first location.
摘要翻译：一些实施例提供了一种通过参考视频序列中的第二图像对第一图像中的第一组像素进行编码的方法。在第二图像内的第一搜索窗口中，该方法搜索以识别与第一图像中的第一组像素最佳匹配的第二图像中的第一特定部分。在第二图像内的第一搜索窗口中，该方法识别对应于第一特定部分的第一位置。在第二图像内的第二搜索窗口中，该方法然后搜索以识别与第一图像中的第一组像素最佳匹配的第二图像中的第二特定部分，其中关于第一位置定义第二搜索窗口。

115. 发明授权

US08539092B2 Video streaming using multiple channels 有权
标题翻译：使用多个频道的视频流
公开(公告)号：US08539092B2
公开(公告)日：2013-09-17
申请号：US12407680
申请日：2009-03-19
申请人： Ionut Hristodorescu , Joe Abuan , James Oliver Normile , Hsi-Jung Wu
发明人： Ionut Hristodorescu , Joe Abuan , James Oliver Normile , Hsi-Jung Wu
IPC分类号： G06F15/16
CPC分类号： H04N7/24 , H04L65/4084 , H04L65/4092 , H04L65/607 , H04L65/608 , H04N21/234327 , H04N21/44004 , H04N21/44209 , H04N21/4621 , H04N21/4622 , H04N21/4788 , H04N21/631
摘要： Systems and methods for streaming video over multiple HTTP channels are provided. The client may have control over the channels, allowing the client to control the amount and source of data received. Data requested by the client may be separated into a set of layers, with each layer being assigned to a separate channel. The client may adjust the number of layers requested based on a variety of factors. Layers may be requested from multiple remote sources, providing the client with additional control over the specific bandwidth profile of received data.
摘要翻译：提供了通过多个HTTP通道流式传输视频的系统和方法。客户端可以控制信道，允许客户端控制接收到的数据的数量和来源。客户端请求的数据可以被分成一组层，每一层被分配到单独的信道。客户端可以根据各种因素调整请求的层数。可以从多个远程源请求层，为客户端提供对接收到的数据的特定带宽简档的附加控制。

116. 发明授权

US08526747B2 Efficient video encoding by preforming transform operations 有权
标题翻译：通过预处理变换操作实现高效的视频编码
公开(公告)号：US08526747B2
公开(公告)日：2013-09-03
申请号：US12111189
申请日：2008-04-28
申请人： Maynard Handley , Roger Kumar , Thomas Pun , Xiaochun Nie , Hsi-Jung Wu
发明人： Maynard Handley , Roger Kumar , Thomas Pun , Xiaochun Nie , Hsi-Jung Wu
IPC分类号： G06K9/36 , G06K9/46 , H04N7/12 , H04N11/02 , H04N11/04
CPC分类号： H04N19/60 , H04N19/122 , H04N19/129
摘要： A method for encoding video with a two-dimensional (2D) transform separable to two one-dimensional (1D) transforms. The method receives an array of values for a sub-section of an image, performs a first 1D-transform of the array, transposes the resulting array, and performs a second 1D-transform of the array resulting from the transpose. The method, without performing another transpose, generates a data stream using a transposed scan order based on the values of the array resulting from the second transform. A method for decoding video encoded by a 2D transform, which separable to two 1D transforms. The method receives a data stream containing encoded values for an image, parses out the values into an array using a transposed scan order, performs a first 1D-inverse transform on the array, transposes the resulting array, and performs a second 1D-inverse transform of the array resulting from the transpose to produce a decoded output.
摘要翻译：一种用二维（2D）变换对两维（1D）变换进行分割的视频进行编码的方法。该方法接收图像的子部分的值阵列，执行阵列的第一个1D变换，转置结果数组，并对转置产生的数组执行第二个1D变换。该方法在不执行另一个转置的情况下，使用基于由第二变换产生的数组的值的转置扫描顺序生成数据流。一种用于对通过2D变换编码的视频进行解码的方法，其可分为两个1D变换。该方法接收包含图像的编码值的数据流，使用转置的扫描顺序将值解析为数组，对阵列执行第一1D逆变换，转置得到的阵列，并执行第二1D逆变换由转置产生的阵列产生解码输出。

117. 发明授权

US08520053B2 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：US08520053B2
公开(公告)日：2013-08-27
申请号：US13560962
申请日：2012-07-27
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。

118. 发明授权

US08493501B2 Scene-aware automatic-exposure control 有权
标题翻译：场景感知自动曝光控制
公开(公告)号：US08493501B2
公开(公告)日：2013-07-23
申请号：US13292353
申请日：2011-11-09
申请人： Douglas Price , Xiaosong Zhou , Hsi-Jung Wu , James Oliver Normile
发明人： Douglas Price , Xiaosong Zhou , Hsi-Jung Wu , James Oliver Normile
IPC分类号： H04N5/238
CPC分类号： H04N5/2351
摘要： A scene-aware auto-exposure control process stabilizes changes in a camera's auto-exposure settings so as to reduce lighting and color flicker during image capture operations. A metric, referred to as the Modified Adjusted Luminance (MAL) metric, is defined to remain relatively constant as long as the lighting of the scene being captured remains relatively constant. Thus, scene changes such as an object moving into, out of, or around in a scene do not significantly affect the MAL metric's value and do not, therefore, trigger an exposure adjustment. Once the MAL metric indicates a scene's lighting is stable, the camera's auto-exposure operation may be suppressed. As long as incoming frames indicate a stable lighting condition (based on the MAL metric), auto-exposure operation may remain suppressed. When incoming frames result in a substantially different MAL over a specified number of frames, auto-exposure operation may be restored.
摘要翻译：场景感知自动曝光控制过程可稳定照相机自动曝光设置的变化，以减少图像拍摄过程中的照明和颜色闪烁。被称为修正调整亮度（MAL）度量的度量被定义为保持相对恒定，只要被捕获的场景的照明保持相对恒定。因此，诸如移动到场景中的，离开或在场景中的对象的场景改变不会显着影响MAL度量的值，因此不会触发曝光调整。一旦MAL指标表明场景的照明是稳定的，则可能会抑制相机的自动曝光操作。只要进入的帧指示稳定的照明条件（基于MAL度量），自动曝光操作可能仍然被抑制。当输入帧在指定数量的帧上导致基本上不同的MAL时，可以恢复自动曝光操作。

119. 发明授权

US08493499B2 Compression-quality driven image acquisition and processing system 有权
标题翻译：压缩质量驱动图像采集和处理系统
公开(公告)号：US08493499B2
公开(公告)日：2013-07-23
申请号：US12794475
申请日：2010-06-04
申请人： Xiaosong Zhou , Douglas Scott Price , Hsi-Jung Wu , Dazhong Zhang
发明人： Xiaosong Zhou , Douglas Scott Price , Hsi-Jung Wu , Dazhong Zhang
IPC分类号： H04N5/235 , H04N7/12 , G06K9/36
CPC分类号： H04N5/232 , H04N19/102 , H04N19/117 , H04N19/134 , H04N19/146 , H04N19/154 , H04N19/85
摘要： Embodiments of the present invention provide a video encoding system in which a video coding engine establishes coding quality metrics that govern its own operation as well as the operation of a camera and/or a pre-processor. An imaging system may include an image acquisition system, a pre-processor and a coding engine. The coding engine may output a quality indicator identifying, for each portion of a video sequence currently being coded, a relatively level of coding quality that is being achieved. The imaging system further may include an image acquisition controller and a pre-processor controller that impose respective operating parameters upon the image acquisition system and the pre-processor in response to these quality indicators. In this manner, overall performance of the imaging system may be improved.
摘要翻译：本发明的实施例提供了一种视频编码系统，其中视频编码引擎建立控制其自身操作以及照相机和/或预处理器的操作的编码质量度量。成像系统可以包括图像采集系统，预处理器和编码引擎。编码引擎可以输出质量指示符，对于正在编码的视频序列的每个部分，识别正在实现的相对级别的编码质量。成像系统还可以包括图像采集控制器和预处理器控制器，其响应于这些质量指示器，在图像采集系统和预处理器上施加相应的操作参数。以这种方式，可以提高成像系统的整体性能。

120. 发明授权

US08397140B2 Error correction coding for recovering multiple packets in a group view of limited bandwidth 有权
标题翻译：用于在有限带宽的组视图中恢复多个分组的纠错编码
公开(公告)号：US08397140B2
公开(公告)日：2013-03-12
申请号：US12794613
申请日：2010-06-04
申请人： Xiaosong Zhou , Hyeonkuk Jeong , Yan Yang , Dazhong Zhang , Hsi-Jung Wu
发明人： Xiaosong Zhou , Hyeonkuk Jeong , Yan Yang , Dazhong Zhang , Hsi-Jung Wu
IPC分类号： H03M13/00
CPC分类号： H03M13/05 , H03M13/1102 , H03M13/1515 , H03M13/152 , H03M13/27 , H03M13/29 , H03M13/2957 , H03M13/373 , H03M13/3746 , H04L1/005 , H04L1/0057 , H04L1/008
摘要： Coded video data may be transmitted between an encoder and a decoder using multiple FEC codes and/or packets for error detection and correction. Only a subset of the FEC packets need be transmitted between the encoder and decoder. The FEC packets of each FEC group may take, as inputs, data packets of a current FEC group and also an untransmitted FEC packet of a preceding FEC group. Due to relationships among the FEC packets, when transmission errors arise and data packets are lost, there remain opportunities for a decoder to recover lost data packets from earlier-received FEC groups when later-received FEC groups are decoded. This opportunity to recover data packets from earlier FEC groups may be useful in video coding and other systems, in which later-received data often cannot be decoded unless earlier-received data is decoded properly.
摘要翻译：可以在编码器和解码器之间使用多个用于错误检测和校正的FEC码和/或包进行编码的视频数据。只有FEC数据包的一部分需要在编码器和解码器之间传输。每个FEC组的FEC分组可以采用当前FEC组的数据分组和前一个FEC组的未发送FEC分组的输入。由于FEC分组之间的关系，当传输错误出现并且数据分组丢失时，当稍后接收的FEC组被解码时，解码器仍然有机会恢复来自早先接收的FEC组的丢失的数据分组。从先前的FEC组恢复数据分组的机会在视频编码和其他系统中可能是有用的，其中后期接收的数据通常不能被解码，除非先前接收到的数据被正确解码。

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