Hyper camera with shared mirror
AssigneeNearmap Australia Pty Ltd.
InventorsJames Austin Besley, Mark Harold Tarlinton, David Arnold Bleads
Life of this patent
Estimating the term…
Abstract
This disclosure is related to positioning one or more glass plates between an image sensor and lens of a camera in a scanning camera system; determining plate rotation rates and plate rotation angles based on one of characteristics of the camera, characteristics and positioning of the one or more glass plates, and relative dynamics of the camera and the object area; and rotating the one or more glass plates about one or more predetermined axes based on corresponding plate rotation rates and plate rotation angles.
Claims20
An imaging system, comprising:
- a camera configured to capture an image of an object area from an imaging beam from the object area, the camera including an image sensor and a lens;
- one or more glass plates positioned between the image sensor and the lens of the camera;
- one or more first drives coupled to each of the one or more glass plates;
- a scanning mirror structure including at least one mirror surface;
- a scanning mirror drive coupled to the scanning mirror structure and configured to rotate the scanning mirror structure about a scan axis based on a scan angle;
- a scanning mirror pixel velocity estimation circuit configured to estimate a scanning mirror pixel velocity based on motion of the scanning mirror structure;
- and
- a motion compensation system configured to determine at least one of plate rotation rates and plate rotation angles of the one or more glass plates based on the at least relative motion of the imaging system with respect to the object area, optical properties of the one or more glass plates, and the scanning mirror pixel velocity estimated by the scanning mirror pixel velocity estimation circuit,
- wherein the motion compensation system is configured to control the one or more first drives to rotate the one or more glass plates about one or more predetermined axes based on at least one of the plate rotation rates and plate rotation angles.
An imaging method, comprising:
- capturing, with a camera of an imaging system, an image of an object area from an imaging beam from the object area, the camera including a sensor and a lens;
- rotating, by a scanning mirror drive, a scanning structure about a scan axis based on a scan angle, the scanning mirror structure including at least one mirror surface;
- estimating, with scanning mirror pixel velocity estimation circuit, a scanning mirror pixel velocity based on motion of the scanning mirror structure;
- determining, with a motion compensation system, at least one of plate rotation rates and plate rotation angles for one or more glass plates positioned between the image sensor and the lens of the camera, the at least one of the plate rotation rates and plate rotation angles being determined based on a relative motion of the imaging system with respect to the object area, optical properties of the one or more glass plates, and the scanning mirror pixel velocity estimated by the circuitry;
- and
- control, with the motion compensation system, one or more first drives that are coupled to the one or more glass plates to rotate the one or more glass plates about one or more predetermined axes based on at least one of the plate rotation rates and plate rotation angles.
Dependencies are inferred from the claim text.