Multiple-projection system

• US 20040239884A1
• Filed: 03/16/2004
• Published: 12/02/2004
• Est. Priority Date: 03/31/2003
• Status: Abandoned Application

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: Suzuki, Yoshiro, Kubota, Akihiro, Nagashima, Yasuo
• Application Number:
  US10/802,475
• Publication Number:
  US 20040239884A1
• Time in Patent Office: Days
• US Class Current: 353/30
• CPC Class Codes: H04N 17/04 for receivers
• CPC Class Codes: H04N 9/12 Picture reproducers H04N9/11 takes precedence
• CPC Class Codes: H04N 9/3147 Multi-projection systems displays in general H04N9/12; video walls G06F3/1446, G09G2300/026
• CPC Class Codes: H04N 9/3194 including sensor feedback
• CPC Class Codes: H04N 9/69 for modifying the colour signals by gamma correction controlling camera response for colour signals H04N23/83

Abstract

A multiple-projection system capable of stably observing high-definition and high quality images and capable of corresponding to the switching of the routes promptly, without irregular color etc. and without performing calibration at each switching of routes, is provided. A multiple-projection system for projecting one image on a screen 5 by two or more projectors 4, comprises a plurality of switchable routes for observing an image projection, a compensation data preservation sections 21a, 21b for storing compensation data to correct output characteristic of respective projectors 4 corresponding to respective routes, and an image processing section 22 for correcting and processing the input image signal based on the compensation data stored in the compensation data preserving section corresponding to the route used.

Claims

1. A multiple-projection system for projecting one image on a screen by plural of projectors comprising a plurality of switchable routes for observing an image projection, a compensation data preservation section for storing compensation data for correcting output characteristic of the projector corresponding to respective routes, and an image processing section for correcting and processing the input image signal based on the compensation data stored in the compensation data preserving section corresponding to the route used.

2. A multiple-projection system as claimed in claim 1, further comprising a calibration means for calculating the compensation data in respective routes to store the data in the corresponding compensation data preserving section.

3. A multiple-projection system as claimed in claim 2, wherein the calibration means comprises a test image sending section for projecting and displaying the test image on the screen from the plural of projectors.

4. A multiple-projection system as claimed in claim 2, wherein the calibration means comprises any one of a CCD camera for detecting the test image projected and displayed on the screen, a spectrometer, a calorimeter and a digital camera.

5. A multiple-projection system as claimed in claim 3, wherein the calibration means comprises any one of a CCD camera for detecting the test image projected and displayed on the screen, a spectrometer, a calorimeter and a digital camera.

6. A multiple-projection system as claimed in claim 1, wherein further comprising a plurality of image projecting light sources capable of switching them to respective projectors, and the route being switched by switching the light sources.

7. A multiple-projection system as claimed in claim 1, wherein the plural viewpoint positions observing the projection profile on the screen, are switchably set, and, the route is switched by switching the viewpoint positions.

8. A multiple-projection system as claimed in claim 1, wherein as the screen, a plurality of screens having different characteristics, are switchably provided, and the route is switched by switching the screen.