公开(公告)号：US20230177661A1

公开(公告)日：2023-06-08

申请号：US17993243

申请日：2022-11-23

Applicant: Axis AB

Inventor： Joakim ERICSON ,  Song YUAN

IPC: G06T5/20 ,  G06T5/00 ,  H04N23/80

CPC classification number: G06T5/20 ,  G06T5/003 ,  H04N23/80 ,  G06T5/002 ,  G06T2207/10016 ,  G06T2207/20004 ,  G06T2207/30232

Abstract: The present disclosure generally relates to the field of camera surveillance, and in particular to a method and control unit for controlling a bitrate of a video stream captured with an image acquisition device.

公开(公告)号：US20250111466A1

公开(公告)日：2025-04-03

申请号：US18888918

申请日：2024-09-18

Applicant: Axis AB

Inventor： Song YUAN ,  Joakim ERICSON

IPC: G06T1/20 ,  G06T5/70 ,  G06T7/20 ,  H04N19/127 ,  H04N19/42 ,  H04N23/80

Abstract: This disclosure relates to methods systems and non-transitory computer-readable storage mediums for distributing load in a multi-chip image processing unit for processing image data into processed image data. An example method comprises receiving first image data, analysing the first image data using a first algorithm, the first algorithm performing a set number of operations for a given size of image data input to the first algorithm, and outputs at least one characteristic of the first image data; using the at least one characteristic to estimate use of memory bandwidth in the first and second chip when processing the first image data into processed image data; and distributing processing of the first image data between the first and the second chip such that the estimated use of memory bandwidth is distributed evenly.

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.