公开(公告)号：US10779003B2

公开(公告)日：2020-09-15

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 ,  H04N19/114 ,  H04N19/177 ,  G08B13/196 ,  H04N19/152 ,  H04N7/18 ,  G08B25/08 ,  H04N19/107 ,  H04N19/137 ,  H04N19/162 ,  H04N19/433 ,  H04N19/44 ,  H04N19/46 ,  H04N19/593 ,  H04N5/917 ,  G11B27/031

Abstract: A method, system, and non-transitory computer readable storage medium having instructions for generating an event video sequence. 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. The system may be included in a camera.

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。