Patent ID: 11922653
Assignee: FORSBERG SERVICES LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. An object locating method comprising the steps of:
a. providing an observation device with a camera;
b. receiving the relative positions of at least three datums;
c. using the observation device, capturing an image of a scene containing the object whose position is to be determined and at least two of the datums;
d. measuring the distance or distances between the observation device and the object or objects within the field of view of the camera; and
e. calculating an azimuth and elevation angle between two datums, or between the optical axis of the camera and each datum, in the image;
f. triangulating the position and attitude of the camera at the time the image was captured using received position data for each datum at the time the image was captured;
g. calculating an azimuth and elevation angle between an optical axis of the camera and the object in the image; and
h. using the calculated position and attitude of the camera and a distance to the object at the time the image was captured, triangulating a position of the object at the time the image was captured.