Image displaying system of environment-adaptive type, presentation system, and image processing method and program

• US 7,110,002 B2
• Filed: 05/02/2001
• Issued: 09/19/2006
• Est. Priority Date: 05/08/2000
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Wada, Osamu
• Primary Examiner(s): Lefkowitz, Sumati
• Assistant Examiner(s): ENGLISH, ALECIA DIANE
• Application Number:
  US10/019,698
• Publication Number:
  US 20030011563A1
• Time in Patent Office: 1,966 Days
• Field of Search: 345/102, 345/101, 345/207, 345/63, 345/211, 345600-604, 349/61, 348602-603, 315/157, 315 61- 64
• US Class Current: 345/600
• CPC Class Codes: H04N 1/603 controlled by characteristics of the picture signal generator or the picture reproducer
• CPC Class Codes: H04N 9/73 Colour balance circuits, e.g. white balance circuits or colour temperature control camera processing pipelines for colour balance H04N23/88

Abstract

To provide an environment-compliant image display system, a presentation system, an image processing method, and a program, a colored-light information processing section 140 is used to create XYZ values that take into account a visual environment, based on colored-light information (more precisely, RGB or XYZ tristimulus values) that has been measured by a colored-light sensor 60, and a profile management section 130 is used to correct the input-output profiles of the projector.

Claims

1. An image display system of environment-compliant type that corrects a color of an image and displays the image, based on visual environment information generated by visual environment detection section that detects a visual environment in a display region of the image, the image display system comprising:

a colored-light information processing section that converts a given color within the visual environment information into a coordinate value within a given color space, and obtains a coordinate value forming a complementary color pair with the converted coordinate value, based on a coordinate value within the given color space of the given color within a given reference environment and the converted coordinate value; and

a correction section that corrects input-output characteristic data for display that is used by a display section to display the image, based on the obtained coordinate value forming the complementary color pair, the complementary color pair comprising colors forming gray when mixed together with the converted coordinate value within the visual environment.

2. The image display system as defined by claim 1,

the colored-light information processing section obtaining an inverse vector of a bound vector that indicates a coordinate position of the converted coordinate value within the color space, as the coordinate value forming the complementary color pair, and

the correction section correcting the input-output characteristic data, using the obtained inverse vector as a correction value.

3. The image display system as defined by claim 2, the correction section performing gamma correction as correction of the input-output characteristic data, based on the coordinate value forming the complementary color pair.

4. The image display system as defined by claim 3, the colored-light information processing section obtaining coordinate values of a plurality of complementary color pairs for each given grayscale unit.

5. The image display system as defined by claim 4, the visual environment detection section comprising a device that detects the visual environment by measuring at least ambient light.

6. A presentation system of environment-compliant type that corrects a color of a presentation image and displays the presentation image, adapting to a visual environment, the presentation system comprising:

a visual environment detection section that detects the visual environment within a display region of the presentation image, and creates visual environment information;

a colored-light information processing section that converts the visual environment information into a coordinate value within a given color space, and obtains a coordinate value forming a complementary color pair with the converted coordinate value, based on a coordinate value within the given color space of the given color within a given reference environment and the converted coordinate value;

a correction section that corrects input-output characteristic data for display that is used by a display section to display the image, based on the obtained coordinate value forming the complementary color pair; and

a display section that displays the presentation image, based on the corrected input-output characteristic data, the complementary color pair comprising colors forming gray when mixed together with the converted coordinate value within the visual environment.

7. The presentation system as defined by claim 6, the correction section performing gamma correction as correction of the input-output characteristic data, based on the coordinate value forming the complementary color pair.

8. The presentation system as defined by claim 7, the display region being a region on a screen, and the display section comprising a projection section that projects the presentation image towards the screen.

9. The presentation system as defined by claim 8, the visual environment detection section detecting a visual environment that takes into account a type of the screen.

10. The presentation system as defined by claim 9, the visual environment detection section comprising a device that detects the visual environment by measuring at least ambient light.

11. An image processing method of environment-compliant type that corrects a color of an image adapting to a visual environment, the method comprising:

detecting a visual environment;

converting the detected visual environment into a coordinate value within a given color space;

calculating value including obtaining a coordinate value forming a complementary color pair with a coordinate value converted by the conversion step, based on a coordinate value within the given color space of the given color in a given reference environment and the converted coordinate value;

correcting input-output characteristic data for display, based on the obtained coordinate value forming the complementary color pair; and

displaying an image, based on the corrected input-output characteristic data, the complementary color pair comprising colors forming gray when mixed together with the converted coordinate value within the visual environment.

12. The image processing method as defined by claim 11,

the calculating of the coordinate-value comprising obtaining an inverse vector of a bound vector that indicates a coordinate position of the converted coordinate value within the color space, as the coordinate value forming the complementary color pair, and

the correcting of the input-output characteristic data being based on the obtained inverse vector as a correction value.

13. The image processing method as defined by claim 11,

the calculating of the coordinate-value comprising obtaining a coordinate position of an externally dividing point that forms a coordinate position of the coordinate value forming the complementary color pair, based on a distance between a coordinate position of the converted coordinate value in the converting of the detected visual environment and a given origin within the color space, as the coordinate value forming the complementary color pair, and

the correcting of the input-output characteristic data includes a corrected value for the coordinate position of the obtained externally dividing point.

14. The image processing method as defined by claim 11, the correcting of the input-output characteristic data includes performing a gamma correction as correction of the input-output characteristic data based on the coordinate value forming the complementary color pair.

15. The image processing method as defined by claim 11, the correcting of the input-output characteristic data includes performing a correction of a color reproduction region as correction of the input-output characteristic data based on the coordinate value forming the complementary color pair.

16. The image processing method as defined by claim 11, the calculating of the coordinate-value comprising obtaining coordinate values of a plurality of complementary color pairs for each given grayscale unit.

17. A computer-readable information storage medium on which is recorded a program for correction a color of a presentation image and displaying the presentation image, adapting to a visual environment, the program causing a computer to function as:

a visual environment detection section that detects the visual environment within a display region of the presentation image, and creates visual environment information;

a colored-light information processing section that converts the visual environment information into a coordinate value within a given color space, and obtains a coordinate value forming a complementary color pair with converted coordinate value, based on a coordinate value within the given color space of within a given reference environment and the convened coordinate value;

correction section that corrects input-output characteristic data for display that is used by the image, based on the obtained coordinate value forming the complementary color pair; and

device that controls a display section to display the presentation image, based on the corrected input-output characteristic data, the complementary pair comprising colors forming gray when mixed together with the converted coordinate value within the visual environment.

18. The computer-readable information storage medium as defined by claim 17, wherein the program stored thereon causes the correction section performing a gamma correction as correction of the input-output characteristic data, based on the coordinate value forming the complementary color pair.

19. The computer-readable information storage medium as defined by claim 18, wherein the program stored thereon causes the display region being a region on a screen, and the display section comprising a projection means which projects the presentation image towards the screen.

20. The computer-readable information storage medium as defined by claim 19, wherein the program stored thereon causes the visual environment detection section detecting a visual environment that takes into account at least a type of screen.

21. The computer-readable information storage medium as defined by claim 20, wherein the program stored thereon causes the visual environment detection section detecting a visual environment that takes into account at least ambient light.