Method of controlling pan-tilt-zoom camera by using fisheye camera and monitoring system
AssigneeIdis Co., Ltd.
InventorsJun Hyeok Heo, Chul Kim
Life of this patent
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Abstract
Provided is a monitoring system and a method of controlling a panning-tilt zoom (PTZ) camera by using a fisheye camera when the fisheye camera and the PTZ camera are adjacently installed. The method includes selecting a region of interest (ROI) in an entire surveillance-target area image captured by the fisheye camera and adjusting a panning angle P and a tilting angle T of the PTZ camera to acquire an accurate image of the selected ROI.
Claims5
A method of controlling a pan-tilt-zoom (PTZ) camera by using a fisheye camera when the fisheye camera and the PTZ camera are adjacently installed, the method comprising:
- selecting a region of interest in an entire surveillance-target area image captured by the fisheye camera;
- and
- adjusting a panning angle P and a tilting angle T of the PTZ camera to acquire an image of the selected region of interest,
- wherein the adjusting of the panning angle P and the tilting angle T comprises:
- adjusting the panning angle P and the tilting angle T of the PTZ camera first so that an optical axis of the PTZ camera is parallel with an optical axis of the fisheye camera directed to a center of the region of interest;
- and
- after the panning angle P and the tilting angle T are adjusted first, adjusting the panning angle P and the tilting angle T of the PTZ camera second on the basis of a distance value between a center of the region of interest in an image captured by the PTZ camera and a center of the PTZ camera image.
A monitoring system comprising:
- a fisheye camera configured with a fisheye lens to monitor an entire surveillance-target area;
- a pan-tilt-zoom (PTZ) camera installed adjacent to the fisheye camera and configured to closely monitor a specific location of the surveillance-target area;
- and
- a controller configured to have a region of interest selected in an image of the entire surveillance-target area captured by the fisheye camera and adjust a panning angle P and a tilting angle T of the PTZ camera in order to acquire an image of the selected region of interest,
- wherein the controller adjusts the panning angle P and the tilting angle T of the PTZ camera first so that an optical axis of the PTZ camera is parallel with an optical axis of the fisheye camera directed to a center of the region of interest and adjusts the panning angle P and the tilting angle T of the PTZ camera second on the basis of a distance value between a center of the region of interest in an image captured by the PTZ camera and a center of the PTZ camera image after the panning angle P and the tilting angle T are adjusted first.
Dependencies are inferred from the claim text.