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    METHOD AND SYSTEM FOR GENERATING AN EVENT VIDEO SEQUENCE, AND CAMERA COMPRISING SUCH SYSTEM
    85.
    发明申请
    METHOD AND SYSTEM FOR GENERATING AN EVENT VIDEO SEQUENCE, AND CAMERA COMPRISING SUCH SYSTEM 审中-公开
    用于生成事件视频序列的方法和系统，以及包含该系统的摄像机

    公开(公告)号：US20160277759A1

    公开(公告)日：2016-09-22

    申请号：US15071654

    申请日：2016-03-16

    Applicant: Axis AB

    Inventor： Viktor Edpalm ,  Bjarne Rosengren ,  Jonas Holmberg ,  Stefan Lundberg

    IPC: H04N19/57 ,  H04N5/917 ,  H04N19/107 ,  H04N19/114 ,  H04N19/593 ,  H04N19/177 ,  H04N19/433 ,  H04N19/44 ,  H04N19/46 ,  H04N19/162 ,  H04N19/137

    Abstract: A method of generating an event video sequence is disclosed. The method comprises receiving input image frames encoded into a sequence of image frames arranged in groups of pictures, each group of pictures having a GOP structure. The method further comprises storing a pre-event sequence of image frames in a first-in-first-out buffer, said pre-event sequence having a first predetermined GOP structure, upon receiving an event notification, retrieving the pre-event sequence from the buffer, and generating the event video sequence by combining the pre-event sequence and a post-event sequence of image frames, said post-event sequence having a second GOP structure, which is different from said first GOP structure. A system for generating an event video sequence is also disclosed, as well as a camera comprising such a system, and a computer program product with instructions adapted to carry out the method when executed by a processor.

    Abstract translation: 公开了一种产生事件视频序列的方法。 该方法包括接收编码成以图像组排列的图像帧序列的输入图像帧，每组图像具有GOP结构。 该方法还包括在先入先出缓冲器中存储图像帧的事件前序列，所述事件前序列具有第一预定GOP结构，在接收到事件通知时，从事件序列中检索事件序列 并且通过组合所述事件前序列和图像帧的事后序列来生成所述事件视频序列，所述后事件序列具有与所述第一GOP结构不同的第二GOP结构。 还公开了一种用于生成事件视频序列的系统，以及包括这种系统的照相机，以及具有适于在由处理器执行时执行该方法的指令的计算机程序产品。

    METHOD AND ENCODER SYSTEM FOR ENCODING VIDEO
    86.
    发明申请
    METHOD AND ENCODER SYSTEM FOR ENCODING VIDEO 有权
    用于编码视频的方法和编码器系统

    公开(公告)号：US20160142705A1

    公开(公告)日：2016-05-19

    申请号：US14939590

    申请日：2015-11-12

    Applicant: Axis AB

    Inventor： Xing Danielsson Fan ,  Viktor Edpalm ,  Fredrik Pihl ,  Lars Persson ,  Alexandre Martins

    IPC: H04N19/105 ,  H04N19/107 ,  H04N19/177 ,  H04N19/593 ,  H04N19/182 ,  H04N19/186 ,  H04N19/503 ,  H04N19/114 ,  H04N19/179

    CPC classification number: H04N19/105 ,  H04N19/107 ,  H04N19/114 ,  H04N19/137 ,  H04N19/142 ,  H04N19/172 ,  H04N19/177 ,  H04N19/179 ,  H04N19/182 ,  H04N19/186 ,  H04N19/503 ,  H04N19/593 ,  H04N19/87

    Abstract: A method for encoding video is disclosed. The method comprises the steps of receiving information representative of pixels in a current digital image frame of a video to be encoded, calculating a group value for each group of neighboring pixels based on the received information, accumulating group values of corresponding groups of pixels in a first sequence of frames to form a first accumulation of accumulated group values, accumulating group values of corresponding groups of pixels in a second sequence of frames to form a second accumulation of accumulated group values, wherein the second sequence includes frames captured over a longer period of time than the first sequence, comparing accumulated group values of the first accumulation with accumulated group values of the second accumulation, calculating a global change value based on the comparison, setting a GOP length based on the global change value; and encoding the current image frame as an intra-frame or inter-frame based on the GOP length. An encoder system for encoding video is also disclosed.

    Abstract translation: 公开了一种视频编码方法。 该方法包括以下步骤：接收表示要编码的视频的当前数字图像帧中的像素的信息，基于接收的信息计算每组相邻像素的组值，累积相应像素组的组值 第一序列的帧以形成累积的组值的第一累积，在第二帧序列中累加相应的像素组的组值，以形成累积组值的第二累加，其中第二序列包括在较长时间段 比较所述第一序列的时间，比较所述第一累积的累积组值与所述第二累积的累积组值，基于所述比较计算全局变化值，基于所述全局变化值设置GOP长度; 并且基于GOP长度将当前图像帧编码为帧内或帧间。 还公开了一种用于编码视频的编码器系统。

    METHOD OF IDENTIFYING RELEVANT AREAS IN DIGITAL IMAGES, METHOD OF ENCODING DIGITAL IMAGES, AND ENCODER SYSTEM
    87.
    发明申请
    METHOD OF IDENTIFYING RELEVANT AREAS IN DIGITAL IMAGES, METHOD OF ENCODING DIGITAL IMAGES, AND ENCODER SYSTEM 有权
    在数字图像中识别相关领域的方法，编码数字图像的方法和编码器系统

    公开(公告)号：US20160140421A1

    公开(公告)日：2016-05-19

    申请号：US14927687

    申请日：2015-10-30

    Applicant: AXIS AB

    Inventor： Viktor Edpalm ,  Lars Persson ,  Xing Danielsson Fan ,  Fredrik Pihl ,  Alexandre Martins

    IPC: G06K9/62 ,  H04N19/182 ,  H04N19/172 ,  H04N19/176 ,  H04N19/60

    CPC classification number: G06K9/6215 ,  H04N19/119 ,  H04N19/124 ,  H04N19/14 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/60 ,  H04N19/85

    Abstract: A method of identifying relevant areas in digital images is provided. The method comprises receiving information representative of pixels in a first digital image, and calculating a spatial statistical measure of said information for groups of neighboring pixels in said first image to form a group value for each group of pixels. Further, the method comprises calculating differences between group values, and comparing said differences to a predetermined threshold value. If said difference is equal to or above said threshold value, said group is identified as relevant, and if said difference is below said threshold value, said group is identified as not relevant. A method of encoding digital images based on the identification of relevant and non-relevant areas is also provided, as well as a digital encoder system.

    Abstract translation: 提供了识别数字图像中相关区域的方法。 该方法包括接收表示第一数字图像中的像素的信息，以及计算所述第一图像中的相邻像素组的所述信息的空间统计量度，以形成每组像素的组值。 此外，该方法包括计算组值之间的差异，并将所述差异与预定阈值进行比较。 如果所述差值等于或高于所述阈值，则所述组被识别为相关，并且如果所述差值低于所述阈值，则所述组被识别为不相关。 还提供了一种基于相关和非相关区域的识别对数字图像进行编码的方法，以及数字编码器系统。

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