PREDICTIVE VIDEO CODER WITH LOW POWER REFERENCE PICTURE TRANSFORMATION
    1.
    发明申请
    PREDICTIVE VIDEO CODER WITH LOW POWER REFERENCE PICTURE TRANSFORMATION 有权
    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

    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。

    ERROR RESILIENT HIERARCHICAL LONG TERM REFERENCE FRAMES
    4.
    发明申请
    ERROR RESILIENT HIERARCHICAL LONG TERM REFERENCE FRAMES 审中-公开
    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

    IPC分类号: H04N7/26

    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。

    Video coding system using implied reference frames
    5.
    发明授权
    Video coding system using implied reference frames 有权
    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

    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。

    WEIGHTED PREDICTION PARAMETER ESTIMATION
    6.
    发明申请
    WEIGHTED PREDICTION PARAMETER ESTIMATION 审中-公开
    加权预测参数估计

    公开(公告)号:US20120207214A1

    公开(公告)日:2012-08-16

    申请号:US13077803

    申请日:2011-03-31

    IPC分类号: H04N7/26

    摘要: Video coding systems incorporate techniques for deriving scalars W and/or O for use in weighted prediction. W represents a scaling factor and O represents an offset value. Given a frame of input video to be coded, a prediction match may be established one or more reference frames. The input frame may be parsed into a plurality of regions. Thereafter the scaling factor W and/or offset value O may be derived by developing a system of equations relating a predicted pixel to the pixel in the frame by the scaling factor W and/or offset value O. Equations within the system may be prioritized according to priority among regions, and scaling factor W and/or offset value O may be solved for. The scaling factor W and/or offset value O may be used during weighted prediction of the input frame.

    摘要翻译: 视频编码系统包括用于导出用于加权预测的标量W和/或O的技术。 W表示缩放因子,O表示偏移值。 给定要编码的输入视频的帧,可以建立一个或多个参考帧的预测匹配。 输入框可以被解析成多个区域。 此后,可以通过将预测像素与帧中的像素相关联的等式系数通过缩放因子W和/或偏移值O来开发来推定比例因子W和/或偏移值O.系统内的等式可以根据 在区域之间优先,并且可以求解缩放因子W和/或偏移值O. 缩放因子W和/或偏移值O可以在输入帧的加权预测期间使用。

    Compression-quality driven image acquisition and processing system
    7.
    发明授权
    Compression-quality driven image acquisition and processing system 有权
    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

    IPC分类号: H04N5/235 H04N7/12 G06K9/36

    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。

    VIDEO CODING SYSTEM USING IMPLIED REFERENCE FRAMES
    8.
    发明申请
    VIDEO CODING SYSTEM USING IMPLIED REFERENCE FRAMES 有权
    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

    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。

    Adaptive auto exposure adjustment
    10.
    发明授权
    Adaptive auto exposure adjustment 有权
    自适应自动曝光调整

    公开(公告)号:US09402034B2

    公开(公告)日:2016-07-26

    申请号:US13558309

    申请日:2012-07-25

    摘要: Techniques for adjusting exposure parameters of a camera such that video data captured by the camera may be coded efficiently. A camera with auto exposure control may capture and output frames of video. A pre-processor may estimate brightness of the frames of the video output from the camera. A controller may estimate a rate of brightness change among the frames, and when the rate of change is lower than a predetermined threshold, the controller may reduce sensitivity of the auto exposure control. A coding engine may predictively code the video.

    摘要翻译: 用于调整照相机的曝光参数的技术,使得由相机拍摄的视频数据可以被有效地编码。 具有自动曝光控制的照相机可以捕获和输出视频帧。 预处理器可以估计从相机输出的视频的帧的亮度。 控制器可以估计帧之间的亮度变化率,并且当变化率低于预定阈值时,控制器可以降低自动曝光控制的灵敏度。 编码引擎可以预测性地对视频进行编码。