Enabling mobile camera calibration
OwnerLuis Lopezinventor
Life of this patent
Estimating the term…
Abstract
Cameras can be used in applications that provide measurements of objects in the field of view. These applications can include advanced driver assistance systems (ADAS). Cameras used this way may require calibration in order to correctly map offsets in the camera image to measurements in the environment. This calibration may involve imaging a known target with a known position and orientation relative to the camera and known patterns on the target. It may be desirable to bring the target to the location of the camera, rather than bringing the camera to the location of the vehicle. The present invention provides a mobile calibration stand for enabling the accurate positioning of a calibration target relative to a vehicle in order to successfully calibrate a camera associated with the vehicle.
Claims10
A system for calibrating a camera, comprising:
- a calibration stand having a central vertical support, a first horizontal support having a first pair of lockably extended and collapsable extensions, and a first calibration target;
- a first configuration of the calibration stand to facilitate the calibrating;
- and
- a second configuration of the calibration stand to facilitate transporting the calibration stand;
- a retractable filament attached to the first horizontal support at the central vertical support;
- and
- a magnet attached to the end of the filament;
- wherein the central vertical support is extended in the first configuration and collapsed for the second configuration, each of the first pair of lockably extended and collapsable extensions of the first horizontal support are locked and extended outward in opposing directions from the central vertical support in the first configuration and collapsed toward the central vertical support in the second configuration, and the first calibration target is attached to the first horizontal support on the first pair of extensions in the first configuration and detached from the calibration stand in the second configuration;
- wherein the camera is mounted behind a windshield of a vehicle;
- wherein the magnet is removably attached to a hood of the vehicle and used to observe whether the calibration stand is correctly aligned and oriented with the vehicle.
Dependencies are inferred from the claim text.