公开(公告)号：US11972622B2

公开(公告)日：2024-04-30

申请号：US17552738

申请日：2021-12-16

Applicant: Axis AB

Inventor： Jiandan Chen ,  Haiyan Xie

IPC: G06V20/70 ,  G06T7/246 ,  G06V10/46

CPC classification number: G06V20/70 ,  G06T7/248 ,  G06V10/46

Abstract: A method for updating a coordinate of an annotated point in a digital image due to camera movement is performed by an image processing device, which obtains a current digital image of a scene. The current digital image has been captured by a camera subsequent to movement of the camera relative the scene. The current digital image is associated with at least one annotated point. Each at least one annotated point has a respective coordinate in the current digital image. The method comprises identifying an amount of the movement by comparing position indicative information in the current digital image to position indicative information in a previous digital image of the scene. The previous digital image has been captured prior to movement of the camera. The method comprises updating the coordinate of each at least one annotated point in accordance with the identified amount of movement and a camera homography.