Method of compensating colors in image display device for users with color vision deficiency and device of the same
Disclosed are a method of compensating colors in an image display device for users with color vision deficiency and a device of the same, enabling the users with color vision deficiency to view display images as vividly and naturally as normal users. The method for compensating colors in an image display device includes a step of determining whether a user is partially color blind or normal, and a step of controlling gain values of a plurality of color signals depending upon the user's color perceptivity so as to compensate colors displayed on a screen, if the user is determined to be partially color blind.
1. A method of compensating colors in an image display device, comprising:
a step of determining whether a user is partially color blind or normal; and
a step of controlling gain values of a plurality of color signals depending upon the user's color perceptivity so as to compensate colors displayed on a screen, if the user is determined to be partially color blind,
wherein the step of controlling gain values of the plurality of color signals is carried out by detecting a color of which a user's color perceptivity is not identical to that of a standard perceptivity value, and controlling gain values of color signals corresponding to colors other than the detected color.
2. The method according to claim 1 , wherein the step of determining whether the user is partially color blind or normal is carried out by using a test pattern provided on the screen.
3. The method according to claim 1 , wherein the step of determining whether the user is partially color blind or normal is carried out by using a user information pre-stored in the image display device, if the user is a pre-registered user.
4. The method according to claim 1 , wherein the gain values of the plurality of color signals corresponding to the colors other than the detected color are proportionally controlled, depending upon a contrast rate between the user's color perceptivity of the detected color and the standard perceptivity value.
5. The method according to claim 1 , wherein a contrast gain corresponding to each of the color signals is controlled, so as to control the gain values of the color signals.
6. The method according to claim 1 , wherein the step of controlling gain values of the plurality of color signals is carried out by identifying a type of partial color blindness corresponding to the user's color perceptivity for each color, and controlling the gain values of the color signals to a predetermined level corresponding to the identified type of partial color blindness.
7. The method according to claim 1 , wherein an icon or message for indicating that the colors of the screen arc being compensated is displayed, along with the controlling of the gain values of the plurality of color signals.
8. A device of compensating colors in an image display device, comprising:
a memory for storing a plurality of test patterns for testing a user's partial color blindness and a user information; and
a controller determining the user's partial color blindness and a user's perceptivity of a plurality of colors, depending upon the test patterns or the user information, and controlling a gain values for a plurality of color signals depending upon the user's color perceptivity,
wherein the controller detects a color of which a user's color perceptivity is not identical to that of a standard perceptivity value, and controls gain values of color signals corresponding to colors other than the detected color.
9. The device according to claim 8 , wherein the controller determines the user's partial color blindness and color perceptivity depending upon a plurality of answers to the test patterns provided by the user.
10. The device according to claim 8 , wherein the controller determines the user's partial color blindness and color perceptivity by searching the user's user information, if the user is a registered user.
11. The device according to claim 10 , wherein the controller determines whether the user is a registered user based on a user identification (ID).
12. The device according to claim 8 , wherein the controller determines the users color perceptivity for red (R), green (G), and blue (B).
13. The device according to claim 8 , wherein the controller proportionally controls the gain values of the plurality of color signals corresponding to the colors other than the detected color, depending upon a contrast rate between the user's color perceptivity of the detected color and the standard perceptivity value.
14. The device according to claim 8 , wherein the controller searches for a type of partial color blindness corresponding to the user's color perceptivity for each color within the memory, and controls the gain values of the color signals to a predetermined level corresponding to the searched type of partial color blindness.
15. The device according to claim 8 , wherein the controller displays an icon or message for indicating that the colors of the screen are being compensated, as the controller controls the gain values of the plurality of color signals.