Camera system for providing instant switching between wide angle and full resolution views of a subject

• US 6,853,809 B2
• Filed: 01/30/2001
• Issued: 02/08/2005
• Est. Priority Date: 01/30/2001
• Status: Expired due to Term

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Pelletier, Daniel
• Primary Examiner(s): Gray, David
• Assistant Examiner(s): Smith, Arthur A
• Application Number:
  US09/772,476
• Publication Number:
  US 20020102101A1
• Time in Patent Office: 1,470 Days
• Field of Search: 396/85, 396/58, 396/153, 348/143, 348/159, 348/169
• US Class Current: 396/85
• CPC Class Codes: G08B 13/19628 of wide angled cameras and camera groups, e.g. omni-directional cameras, fish eye, single units having multiple cameras achieving a wide angle view
• CPC Class Codes: G08B 13/19643 wherein the cameras play different roles, e.g. different resolution, different camera type, master-slave camera
• CPC Class Codes: H04N 23/58 Means for changing the camera field of view without moving the camera body, e.g. nutating or panning of optics or image sensors
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources

Abstract

A camera system and method for operating that system. The camera system comprises a stationary camera having a wide angle view, a remotely controllable camera having a relatively smaller angle view for providing images in substantially full resolution, and a processor. The processor monitors the wide angle view of the stationary camera, receives information concerning a selected desired subject within the wide angle view, generates an electronic pan-tilt-zoom view of the selected desired subject based on the wide angle view of the stationary camera, controls the remotely controllable camera for providing a view that overlaps the electronic pan-tilt-zoom view of the desired subject, and processes the electronic pan-tilt-zoom view of the desired subject in accordance with the resolution of the remotely controllable camera.

Claims

1. A camera system, the system comprising:

a stationary camera having a wide angle view;

a remotely controllable camera having a relatively smaller angle view for providing images in substantially full resolution; and

a processor for monitoring the wide angle view of the stationary camera, enabling selection of a desired subject within the wide angle view, generating an electronic pan-tilt-zoom view of the desired subject based on the wide angle view of the stationary camera, controlling the remotely controllable camera for providing a view that overlaps the electronic pan-tilt-zoom view of the desired subject, and processing the electronic pan-tilt-zoom view of the desired subject in accordance with the resolution of the remotely controllable camera, the processor further including means for receiving calibration data that defines particular operational characteristics of the stationary and remotely controlled cameras.

2. The camera system according to claim 1 wherein the stationary camera comprises a electronic-pan-tilt-zoom camera.

3. The camera system according to claim 1 wherein the remotely controlled camera comprises a mechanical-pan-tilt-zoom camera.

4. The camera system according to claim 1 wherein the processor comprises a computer.

5. The camera system according to claim 1 further including means for displaying the substantially full resolution view of the desired subject.

6. A method of operating a camera system, comprising the steps of:

providing a camera system having a stationary camera providing a wide angle view and a remotely controllable camera set having a relatively smaller angle view for providing images in substantially full resolution;

monitoring the wide angle view of the stationary camera;

selecting a desired subject within the wide angle view;

generating an electronic pan-tilt-zoom view of the desired subject based on the wide angle view of the stationary camera;

controlling the remotely controllable camera for providing a view that overlaps the electronic pan-tilt-zoom view of the desired subject;

processing the electronic pan-tilt-zoom view of the desired subject in accordance with the resolution of the remotely controllable camera; and

providing calibration data that defines particular operational characteristics of the stationary and remotely controllable cameras.

7. The method according to claim 6 wherein the processing step further comprises the step of displaying the processed view of the desired subject.

8. The method according to claim 6 wherein the selecting step comprises the step of generating pixel data defining the desired subject within the wide angle view.