公开(公告)号：US20240005460A1

公开(公告)日：2024-01-04

申请号：US18326555

申请日：2023-05-31

Applicant: Axis AB

Inventor： Joakim ERICSON ,  Song YUAN ,  Johan STENING

IPC: G06T5/00 ,  G06T5/50

CPC classification number: G06T5/006 ,  G06T5/50

Abstract: A method of distortion correction in an image captured by a non-rectilinear camera includes obtaining multiple images of a scene captured by the camera over time, determining where bottom portions of objects having moved over a horizontal surface in the scene are located in the images, determining a boundary of the horizontal surface in the scene based on the determined locations of the bottom portions, generating a three-dimensional model of the scene by defining one or more vertical surfaces around the determined boundary of the horizontal surface of the scene, and correcting a distortion of at least one of the images by projecting the image onto the three-dimensional model of the scene. A corresponding device, computer program and computer program product are also provided.

公开(公告)号：US20250157003A1

公开(公告)日：2025-05-15

申请号：US18945145

申请日：2024-11-12

Applicant: Axis AB

Inventor： Mikael MURSTAM ,  Johan STENING

IPC: G06T5/50 ,  G06T7/11 ,  G06T7/20 ,  G06T7/90 ,  G06V10/764 ,  G06V20/52

Abstract: A method of stitching image data from one or more image sensors arranged to acquire image data depicting at least partly overlapping views of a scene comprises obtaining sets of image data representing a blending region; dividing each set of image data into portions of different interest levels; for each portion of image data, determining one or more image frequency bands based on the interest level of the portion, and obtaining image data of the determined one or more image frequency bands from the portion of image data; and blending the first set of image data and the second set of image data by multi-band blending, wherein only the obtained image data of the determined one or more image frequency bands are blended for each portion of image data.