Color Perception Tester, Control Program and Method of Controlling Color Perception Tester

• US 20130069973A1
• Filed: 04/12/2011
• Published: 03/21/2013
• Est. Priority Date: 04/14/2010
• Status: Active Grant

• Current Assignee: Kazuo Ichikawa, KOWA Company Limited, Shinshu University National University Corporation
• Original Assignee: Kazuo Ichikawa, KOWA Company Limited, Shinshu University National University Corporation
• Inventors: Hara, Takuya, Ichikawa, Kazuo, Tanaka, Kiyoshi, Tanaka, Yoshiki
• Granted Patent: US 9,489,917 B2
• Time in Patent Office: Days
• US Class Current: 345/593
• CPC Class Codes: A61B 3/032 Devices for presenting test symbols or characters, e.g. test chart projectors A61B3/036 takes precedence
• CPC Class Codes: A61B 3/066 for testing colour vision
• CPC Class Codes: G06T 11/00 2D [Two Dimensional] image generation
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607

Abstract

A color perception test has a color matching processor that executes a color matching processing on a color monitor, and an image display controller that displays two or more images for color perception test in order on the color monitor on which the color matching processing was done. When displaying each image for color perception test, a color perception test is done in a state that one of its hue, brightness, saturation and display time is changed and the other elements are fixed. Since the color perception tester has the color matching processor, colors of the image are not changed with passage of time different from color printed one, and correct test can be done thereby. If the test is periodically done on some examinee, a degree of decreasing color perception function by aging can be exactly known.

Claims

1. A color perception tester, comprising:

a color matching processor that executes a color matching processing on a color monitor;

an image display controller that executes at least one display step wherein two or more images for color perception test are displayed in order on said color monitor on which said color matching processing was done;

whereby said image display controller changes display time of each image for color perception test so as to become gradually longer as a first element, or changes one element of five elements, a hue, a brightness, a saturation of each image for color perception test, and a brightness of a background or a stimulus if said image for color perception test is comprised of said background image and said stimulus shown in said background image as said first element in such a state that said display time is fixed when displaying said two or more images for color perception test in said one display step.

2. The color perception tester according to claim 1, wherein said image display controller executes at least two display steps, a first display step wherein two or more images for color perception test are displayed in order on said color monitor on which said color matching processing was done, and a second display step wherein two or more images for color perception test are displayed in order on said color monitor, and

said image display controller changes said first element when displaying each image for color perception test in each display step, and changes a second element, one element excluding said first element of six elements, hue, brightness, saturation and display time of each image for color perception test and brightness of a background or a stimulus if said image for color perception test is comprised of said background image and said stimulus shown in said background image gradually in said first display step and said second display step and fixes four elements excluding said first element and said second element during said first display step and said second display step.

3. The color perception tester according to claim 1 wherein said image display controller has a display time controller that controls display time of each image for color perception test.

4. The color perception tester according to claim of 1 further comprising a test result display that displays an image for color perception test, information on color combination used in displayed image for color perception test, a result whether or not an examinee can perceive said image for color perception test and display time of said image for color perception test.

5. The color perception tester according to claims 1 further comprising an image data storage that stores two or more images for color perception test, wherein said image display controller displays said image for color perception test stored in said image data storage.

6. The color perception tester according to claims 1 further comprising an image composer that composes said image for color perception test to be displayed, wherein said image display controller displays said image for color perception test that was composed through said image composer.

7. The color perception tester according to claim 6, further comprising an image data storage that stores two or more images for color perception test, wherein said image for color perception test composed through said image composer is temporally stored in said image data storage.

8. The color perception tester according to claims 1 wherein said image display controller displays an image in gray color on said color monitor for a predetermined time during switching said image for color perception test.

9. The color perception tester according to claims 1 further comprising a statistical data computer that computes test results of a color perception test done on two or more examinees comprising an examinee group, as statistical data, an accumulated data storage that stores two or more statistical data obtained from said examinee group as accumulated data, and a data comparator that compares said test result of said color perception test done on at least one of said examinees with said accumulated data.

16. The color perception tester according to claims 1 wherein said image for color perception test is one showing figures, comprising characters, numerals and Landolt rings, in a background.

19. The color perception tester according to claims 1, wherein a user is capable of selecting to change display time of said image for color perception test as said first element, to change hue of said image for color perception test as said first element, to change brightness of said image for color perception test as said first element, to change saturation of said image for color perception test as said first element, or to change brightness of said background or said stimulus as said first element.

10. Control program for controlling a computer, for providing said computer to function as at least one member of the group comprising:

a color matching processor that executes a color matching processing on a color monitor; and

an image display controller that executes at least one display step wherein two or more images for color perception test are displayed in order on said color monitor on which said color matching processing was done;

whereby said image display controller changes display time of each image for color perception test so as to become gradually longer as a first element, or changes one element of five elements, a hue, a brightness, a saturation of each image for color perception test, and a brightness of a background or a stimulus if said image for color perception test is comprised of said background image and said stimulus shown in said background image as the first element in such a state that said display time is fixed when displaying said two or more images for color perception test in said one display step.

11. The control program according to claim 10, wherein said image display controller executes at least two display steps, a first step wherein two or more images for color perception test are displayed in order on said color monitor on which said color matching processing was done, and a second display step wherein two or more images for color perception test are displayed in order on said color monitor;

and said image display controller changes said first element when displaying each image for color perception test in each display step, and gradually changes said second element that is one element excluding said first element of six elements, a hue, a brightness, a saturation, a display time of each image for color perception test, and a brightness of a background or a stimulus if said image for color perception test is comprised of said background image and said stimulus shown in said background image in said first display step and said second display step, and fixes four elements excluding said first element and said second element in said first display step and said second display step.

12. The control program according to claim 10 or 11, for providing said computer to function as at least one member of the group comprising:

a statistical data computer that computes test result of a color perception test done on two or more examinees comprising an examinee group, as statistical data, an accumulated data storage that stores two or more statistical data obtained from said examinee group as accumulated data; and

a data comparator that computes said test result of said color perception test done on at least one examinee with said accumulated data.

17. The control program according to claims 10 wherein said image for color perception test is one showing figures, comprising characters, numerals and Landolt rings, in a background.

20. The control program according to claims 10 wherein a user is capable of selecting to change display time of said image for color perception test as said first element, to change hue of said image for color perception test as said first element, to change brightness of said image for color perception test as said first element, to change saturation of said image for color perception test as said first element, or to change brightness of said background or said stimulus as said first element.

13. A method of controlling a color perception tester, comprising:

a step of executing a color matching processing on a color monitor through a color matching processor;

a step of executing at least one display step wherein two or more images for color perception test are displayed in order on said color monitor on which said color matching processing was done through said image display controller;

whereby said image display controller changes display time of each image for color perception test so as to become gradually longer as a first element, or changes one element of five elements, a hue, a brightness, a saturation of each image for color perception test, and a brightness of a background or a stimulus if said image for color perception test is comprised of said background image and said stimulus showing in said background image as the first element in such a state that said display time is fixed when displaying said two or more images for color perception test in said one display step.

14. The method of controlling the color perception tester according to claim 13, wherein said image display controller executes at least two display steps, a first display step wherein two or more images for color perception test are displayed in order on said color monitor on which said color matching processing was done, and a second display step wherein two or more images for color perception test are displayed in order on said color monitor, and said image display controller changes said first element when displaying each image for color perception test in each display step, and changes a second element, one element excluding said first element of a six elements, a hue, a brightness, a saturation and a display time of each image for color perception test and a brightness of a background or a stimulus if aid image for color perception test is comprised of said background image and said stimulus shown in said background image gradually in said first display step and said second display step and fixes four elements excluding said first element and said second element during said first display step and said second display step.

15. The method of controlling the color perception tester according to claim 13 or 14, further comprising:

a step of computing test result of a color perception test done on two or more examinees comprising an examinee group as statistical data through a statistical data computer,

a step of storing two or more statistical data obtained from said examinee group as accumulated data through an accumulated data storage; and

a step of comparing said test result of said color perception test done on at least one examinee with said accumulated data through a data comparator.

18. The method of controlling the color perception tester according to claims 13 wherein said image for color perception test is one showing figures, comprising characters, numerals and Landolt rings, in a background.

21. The method of controlling color perception tester according to claims 13 wherein a user is capable of selecting to change display time of said image for color perception test as said first element, to change hue of said image for color perception test as said first element, to change brightness of said image for color perception test as said first element, to change saturation of said image for color perception test as said first element, or to change brightness of said background or said stimulus as said first element.