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1. 发明申请

US20130329799A1 PREDICTIVE VIDEO CODER WITH LOW POWER REFERENCE PICTURE TRANSFORMATION 有权
标题翻译：具有低功率参考图像转换的预测视频编码器
公开(公告)号：US20130329799A1
公开(公告)日：2013-12-12
申请号：US13755928
申请日：2013-01-31
申请人： Yao-Chung Lin , Xiaosong Zhou , Hsi-Jung Wu , Douglas Scott Price , Chris Y. Chung , Dazhong Zhang
发明人： Yao-Chung Lin , Xiaosong Zhou , Hsi-Jung Wu , Douglas Scott Price , Chris Y. Chung , Dazhong Zhang
IPC分类号： H04N7/26
CPC分类号： H04N19/51 , H04N19/503
摘要： Video coders may perform perspective transformation of reference frames during coding in a manner that conserves processing resources. When a new input frame is available for coding, a camera position for the input frame may be estimated. A video coder may search for reference pictures having similar camera positions as the position of the input frame and, for each reference picture identified, the video coder may perform a prediction search to identify a reference picture that is the best prediction match for the input frame. Once the video coder identifies a reference picture to serve as a prediction source for the input frame, the video coder may derive a transform to match the reference frame data to the input frame data and may transform the reference picture accordingly. The video coder may code the input frame using the transformed reference picture as a prediction reference and may transmit coded frame data and the camera position of the input frame to a decoder. Thus, the video coder may perform derivation and execution of transforms on a limited basis which conserves system resources.
摘要翻译：视频编码器可以在编码期间以保存处理资源的方式执行参考帧的透视变换。当新的输入帧可用于编码时，可以估计用于输入帧的摄像机位置。视频编码器可以搜索具有与输入帧的位置相似的相机位置的参考图像，并且对于识别的每个参考图像，视频编码器可以执行预测搜索以识别作为输入帧的最佳预测匹配的参考图像。一旦视频编码器识别用作输入帧的预测源的参考图像，则视频编码器可以导出将参考帧数据与输入帧数据相匹配的变换，并且可以相应地变换参考图像。视频编码器可以使用变换的参考图片作为预测参考来对输入帧进行编码，并且可以将编码的帧数据和输入帧的摄像机位置发送到解码器。因此，视频编码器可以在有限的基础上进行变换的推导和执行，从而节省系统资源。

2. 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。

3. 发明申请

US20120170654A1 VIDEO CODING SYSTEM USING IMPLIED REFERENCE FRAMES 有权
标题翻译：使用暗示参考框架的视频编码系统
公开(公告)号：US20120170654A1
公开(公告)日：2012-07-05
申请号：US12986703
申请日：2011-01-07
申请人： Ke Zhang , Dazhong Zhang , Douglas Scott Price , Hsi-Jung Wu , Xiaosong Zhou
发明人： Ke Zhang , Dazhong Zhang , Douglas Scott Price , Hsi-Jung Wu , Xiaosong Zhou
IPC分类号： H04N7/32 , H04N7/26
CPC分类号： H04N7/26 , H04N19/23 , H04N19/58
摘要： A video coding/decoding system builds implied reference frames from a plurality of reference frames developed during coding. Coded data of reference pictures are decoded and stored in a reference picture cache. An implied reference frame may be derived from a plurality of reference frames and may be stored in the reference picture cache. Thereafter, coding of new input data may proceed using the implied reference frame as a source of prediction. The method may be used to identify visual elements such as background elements that may persist in video over a longer period that can be captured by the system under conventional reference frames assembly and eviction. Implied reference frames may be built at both an encoder and a decoder to serve as sources of prediction.
摘要翻译：视频编码/解码系统从编码期间开发的多个参考帧构建隐含的参考帧。参考图像的编码数据被解码并存储在参考图像缓存中。可以从多个参考帧导出隐含的参考帧，并且可以将其存储在参考图像高速缓存中。此后，可以使用隐含参考帧作为预测源来进行新输入数据的编码。该方法可以用于识别视觉元素，例如可以在可在常规参考帧组装和驱逐下由系统捕获的较长时间段内持续存在视频的背景元素。可以在编码器和解码器两者构建隐含的参考帧以用作预测的源。

4. 发明授权

US10205953B2 Object detection informed encoding 有权
公开(公告)号：US10205953B2
公开(公告)日：2019-02-12
申请号：US13359377
申请日：2012-01-26
申请人： Douglas Scott Price , Hsi-Jung Wu , Xiaosong Zhou , Dazhong Zhang
发明人： Douglas Scott Price , Hsi-Jung Wu , Xiaosong Zhou , Dazhong Zhang
IPC分类号： H04N19/20 , H04N19/176 , H04N19/115 , H04N19/124 , H04N19/137 , H04N19/17 , G06K9/34 , G06K9/00 , G06K9/46 , G06K9/62 , G06T7/10 , G06T7/11 , G06T7/12 , G06T7/13 , G06T7/136 , G06T7/181 , G06T7/143 , G06T7/187 , G06T7/194
摘要： Embodiments of the present invention provide techniques for coding video data efficiently based on detection of objects within video sequences. A video coder may perform object detection on the frame and when an object is detected, develop statistics of an area of the frame in which the object is located. The video coder may compare pixels adjacent to the object location to the object's statistics and may define an object region to include pixel blocks corresponding to the object's location and pixel blocks corresponding to adjacent pixels having similar statistics as the detected object. The coder may code the video frame according to a block-based compression algorithm wherein pixel blocks of the object region are coded according to coding parameters generating relatively high quality coding and pixel blocks outside the object region are coded according to coding parameters generating relatively lower quality coding.

5. 发明申请

US20130195178A1 OBJECT DETECTION INFORMED ENCODING 审中-公开
标题翻译：对象检测通知编码
公开(公告)号：US20130195178A1
公开(公告)日：2013-08-01
申请号：US13359377
申请日：2012-01-26
申请人： Douglas Scott Price , Hsi-Jung Wu , Xiaosong Zhou , Dazhong Zhang
发明人： Douglas Scott Price , Hsi-Jung Wu , Xiaosong Zhou , Dazhong Zhang
IPC分类号： H04N7/26
CPC分类号： H04N19/20 , G06K9/00221 , G06K9/00234 , G06K9/00248 , G06K9/0061 , G06K9/342 , G06K9/4638 , G06K9/6202 , G06T7/10 , G06T7/11 , G06T7/12 , G06T7/13 , G06T7/136 , G06T7/143 , G06T7/181 , G06T7/187 , G06T7/194 , G06T2207/20012 , G06T2207/20016 , G06T2207/20116 , G06T2207/20121 , G06T2207/20124 , G06T2207/20128 , G06T2207/20132 , G06T2207/20152 , G06T2207/20156 , G06T2207/20161 , G06T2207/20164 , G06T2207/20168 , G06T2207/30201 , H04N19/115 , H04N19/124 , H04N19/137 , H04N19/17 , H04N19/176
摘要： Embodiments of the present invention provide techniques for coding video data efficiently based on detection of objects within video sequences. A video coder may perform object detection on the frame and when an object is detected, develop statistics of an area of the frame in which the object is located. The video coder may compare pixels adjacent to the object location to the object's statistics and may define an object region to include pixel blocks corresponding to the object's location and pixel blocks corresponding to adjacent pixels having similar statistics as the detected object. The coder may code the video frame according to a block-based compression algorithm wherein pixel blocks of the object region are coded according to coding parameters generating relatively high quality coding and pixel blocks outside the object region are coded according to coding parameters generating relatively lower quality coding.
摘要翻译：本发明的实施例提供了基于视频序列内的对象的检测来有效地对视频数据进行编码的技术。视频编码器可以在帧上执行对象检测，并且当检测到对象时，开发对象所在的帧的区域的统计。视频编码器可以将与物体位置相邻的像素与对象的统计信息进行比较，并且可以定义对象区域以包括对应于对象的位置的像素块和对应于具有与检测对象相似的统计信息的相邻像素的像素块。编码器可以根据基于块的压缩算法对视频帧进行编码，其中根据产生相对较高质量编码的编码参数来编码对象区域的像素块，并且根据生成相对较低质量的编码参数对目标区域外的像素块进行编码编码。

6. 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。

7. 发明授权

US08842723B2 Video coding system using implied reference frames 有权
标题翻译：视频编码系统使用隐含的参考帧
公开(公告)号：US08842723B2
公开(公告)日：2014-09-23
申请号：US12986703
申请日：2011-01-07
申请人： Ke Zhang , Dazhong Zhang , Douglas Scott Price , Hsi-Jung Wu , Xiaosong Zhou
发明人： Ke Zhang , Dazhong Zhang , Douglas Scott Price , Hsi-Jung Wu , Xiaosong Zhou
IPC分类号： H04N7/26 , H04N7/32 , H04N19/00 , H04N19/50
CPC分类号： H04N7/26 , H04N19/23 , H04N19/58
摘要： A video coding/decoding system builds implied reference frames from a plurality of reference frames developed during coding. Coded data of reference pictures are decoded and stored in a reference picture cache. An implied reference frame may be derived from a plurality of reference frames and may be stored in the reference picture cache. Thereafter, coding of new input data may proceed using the implied reference frame as a source of prediction. The method may be used to identify visual elements such as background elements that may persist in video over a longer period that can be captured by the system under conventional reference frames assembly and eviction. Implied reference frames may be built at both an encoder and a decoder to serve as sources of prediction.
摘要翻译：视频编码/解码系统从编码期间开发的多个参考帧构建隐含的参考帧。参考图像的编码数据被解码并存储在参考图像缓存中。可以从多个参考帧导出隐含的参考帧，并且可以将其存储在参考图像高速缓存中。此后，可以使用隐含参考帧作为预测源来进行新输入数据的编码。该方法可以用于识别视觉元素，例如可以在可在常规参考帧组装和驱逐下由系统捕获的较长时间段内持续存在视频的背景元素。可以在编码器和解码器两者构建隐含的参考帧以用作预测的源。

8. 发明申请

US20120106632A1 METHOD AND APPARATUS FOR ERROR RESILIENT LONG TERM REFERENCING BLOCK REFRESH 审中-公开
标题翻译：用于错误恢复长期参考块修改的方法和装置
公开(公告)号：US20120106632A1
公开(公告)日：2012-05-03
申请号：US12914650
申请日：2010-10-28
申请人： Dazhong Zhang , Xiaosong Zhou , Hsi-Jung Wu
发明人： Dazhong Zhang , Xiaosong Zhou , Hsi-Jung Wu
IPC分类号： H04N7/50
CPC分类号： H04N19/89 , H04N19/107 , H04N19/14 , H04N19/176 , H04N19/61
摘要： A system and method for coding video data wherein a pixel block may be coded for refresh with reference to an LTR frame that was successfully transmitted, or has a high probability of having been successfully transmitted from the encoder to the decoder. Not all pixel blocks in the frame may be refreshed at the same rate. Pixel blocks containing edge details, containing a significant object, or containing foreground image data may be refreshed more often than pixel blocks containing smooth, background, or relatively less significant image data.
摘要翻译：一种用于对视频数据进行编码的系统和方法，其中像素块可以被编码用于参考已经成功发送的LTR帧进行刷新，或者具有从编码器成功发送到解码器的高概率。不是帧中的所有像素块可以以相同的速率刷新。包含重要对象或包含前景图像数据的边缘细节的像素块可能比包含平滑，背景或相对不太重要的图像数据的像素块更频繁地刷新。

9. 发明申请

US20110274167A1 VIDEO CODING SYSTEM USING SUB-CHANNELS AND CONSTRAINED PREDICTION REFERENCES TO PROTECT AGAINST DATA TRANSMISSION ERRORS 有权
标题翻译：使用子频道的视频编码系统和受限的预测参考以防止数据传输错误
公开(公告)号：US20110274167A1
公开(公告)日：2011-11-10
申请号：US13175079
申请日：2011-07-01
申请人： Dazhong Zhang , Hsi-Jung Wu , Xiaosong Zhou
发明人： Dazhong Zhang , Hsi-Jung Wu , Xiaosong Zhou
IPC分类号： H04N7/32
CPC分类号： H04N21/234381 , H04N19/157 , H04N19/166 , H04N19/31 , H04N19/37 , H04N19/61 , H04N19/89 , H04N21/2381 , H04N21/4381 , H04N21/631 , H04N21/6583
摘要： A coding technique is disclosed in which frames of a video sequence are assigned to one of a plurality of sub-channels to be transmitted to a decoder. The frames are coded according to predictive coding techniques such that ordinarily prediction references of the frames in each sub-channel only reach the reference frames that occur within the same sub-channel. Thus, if transmission errors arise with respect to one sub-channel, decoding may occur for another sub-channel until the transmission error is detected and corrected.
摘要翻译：公开了一种编码技术，其中将视频序列的帧分配给多个子信道之一以发送到解码器。帧根据预测编码技术进行编码，使得每个子信道中的帧的通常预测参考仅到达发生在相同子信道内的参考帧。因此，如果相对于一个子信道出现传输错误，则对于另一个子信道可能发生解码，直到检测和纠正传输错误。

10. 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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