公开(公告)号：US20230188732A1

公开(公告)日：2023-06-15

申请号：US17980150

申请日：2022-11-03

Applicant: Axis AB

Inventor： Björn VÖLCKER ,  Stefan LUNDBERG

IPC: H04N19/172 ,  G06F21/62 ,  G06F21/64 ,  H04L9/32

CPC classification number: H04N19/172 ,  G06F21/6209 ,  G06F21/64 ,  H04L9/3247

Abstract: A method for verifying a digital signature in a video data segment generated by a video delivery chain comprises: obtaining the video data segment comprising encoded image frames and a plurality of node device datasets associated with respective labels; wherein one or more node device datasets include respective digital signatures; wherein the one or more node device datasets comprises a first node device dataset which includes a first digital signature generated by a first node device based on a first number of node device datasets that have been last added to the video data segment before the first node device dataset; locating the labels; identifying , using the labels, the first number of node device datasets; and verifying the first digital signature. The application also discloses a method of adding a digital signature to a video data segment.

公开(公告)号：US20220201253A1

公开(公告)日：2022-06-23

申请号：US17524063

申请日：2021-11-11

Applicant: Axis AB

Inventor： Stefan LUNDBERG ,  Carl-Axel ALM

IPC: H04N7/18 ,  H04N5/232 ,  G06K9/00

Abstract: There is provided a camera and a method therein for facilitating installation of the camera. The method comprises capturing a video stream of a scene when the camera is installed with a first FOV, which scene comprises an object. A size in the video stream of at least one part of the object is estimated. As long as the estimated size is above a first threshold and below a second threshold, providing a first, edge-filtered, version of the video stream to secure privacy of the object. In response to the estimated size being above the second threshold indicating that the privacy is at risk of being revealed, entering an enhanced secure privacy mode comprising generating an alert to prompt an installer to re-install the camera with a second FOV different from the first FOV, and disabling provision of the first, edge-filtered, version of the video stream.

公开(公告)号：US20180077357A1

公开(公告)日：2018-03-15

申请号：US15702202

申请日：2017-09-12

Applicant: Axis AB

Inventor： Stefan LUNDBERG

IPC: H04N5/232 ,  G06T7/20 ,  G06T7/70 ,  G06K9/00

CPC classification number: H04N5/23296 ,  G06K9/00771 ,  G06K9/6267 ,  G06T7/20 ,  G06T7/62 ,  G06T7/70 ,  G06T2207/30232 ,  G08B13/19608 ,  G08B13/1963 ,  H04N5/23216 ,  H04N7/18 ,  H04N7/183

Abstract: A camera control unit, having “learned” how objects typically move in a monitored scene, provides help to an operator by moving a monitoring camera according to representative movement of the objects in the scene. The representative movement may be derived in a learning procedure using object motion analysis.

公开(公告)号：US20160119553A1

公开(公告)日：2016-04-28

申请号：US14887949

申请日：2015-10-20

Applicant: Axis AB

Inventor： Carl-Axel ALM ,  Stefan LUNDBERG ,  Johan WENNERSTEN

IPC: H04N5/272 ,  H04N7/18 ,  G06K9/00 ,  G06K9/32 ,  G06T7/20

CPC classification number: H04N5/272 ,  G06K9/00771 ,  G06K9/3241 ,  G06T7/20 ,  G06T2207/10016 ,  G08B13/19667 ,  G08B13/19682 ,  G08B13/19691 ,  G08B13/19697 ,  H04N7/183 ,  H04N7/188

Abstract: The present application relates to methods and systems for including sensor data from a sensor unit (108) as an overlay (204) in a video stream from a camera (106) monitoring a scene (200). The overlay has overlay regions (206a-f) corresponding to scene regions (202a-f), and when the sensor unit detects motion in a scene region a graphical element (208) is added to the overlay in the overlay region corresponding to that scene region. Video analytics procedures, such as object feature detection or motion or change detection may then be used to determine if detection has been made in a specific scene region by both the camera and the sensor unit.

Abstract translation: 本申请涉及用于将来自传感器单元（108）的传感器数据作为监视场景（200）的相机（106）的视频流中的覆盖（204）的方法和系统。 覆盖层具有对应于场景区域（202a-f）的覆盖区域（206a-f），并且当传感器单元检测到场景区域中的运动时，图形元素（208）被添加到对应于该场景的覆盖区域中的覆盖层 地区。 然后可以使用诸如对象特征检测或运动或变化检测的视频分析程序来确定在相机和传感器单元两者中是否在特定场景区域中进行检测。

公开(公告)号：US20140063342A1

公开(公告)日：2014-03-06

申请号：US13966937

申请日：2013-08-14

Applicant: AXIS AB

Inventor： Stefan LUNDBERG

IPC: H04N7/01

CPC classification number: H04N7/0117 ,  H04N7/012

Abstract: A method for de-interlacing interlaced video includes receiving a first video field and a second video field, generating a first video frame by inserting the first video field in the first video frame on every second line of the first video frame, and by inserting a first synthesized video field on the lines of the first video frame not populated by the first video field. The video data of the first synthesized video field is based on video data of the first and second video fields. A second video frame is generated by inserting the second video field in the first video frame on every second line of the second video frame and by inserting a second synthesized video field on the lines of the second video frame not populated by the second video field. Two de-interlaced video frames are output for every received interlaced video frame.

Abstract translation: 一种用于去隔行隔行扫描视频的方法包括：接收第一视频场和第二视频场，通过在第一视频帧的第二行上插入第一视频帧中的第一视频场，并通过插入第 在第一视频帧的未由第一视频场填充的第一视频帧的行上的第一合成视频场。 第一合成视频字段的视频数据基于第一和第二视频字段的视频数据。 通过在第二视频帧的每一行的第一视频帧中插入第二视频字段并且通过在第二视频字段未填充的第二视频帧的行上插入第二合成视频字段来生成第二视频帧。 为每个接收到的隔行视频帧输出两个去隔行视频帧。