Image display device, method of generating correction value of image display device, program for generating correction value of image display device, and recording medium recording program thereon

An image display device comprising:

• an image display unit having a screen on which an image is displayed and an image generating device which is paired with the screen and of which an output characteristic value has distribution;
• and
• a correction unit correcting an inputted image signal by using a correction value corresponding to the distribution of the output characteristic value and then outputting the corrected image signal to the image display unit,
• wherein the correction unit includes:
• a correction value storage unit that sets a plurality of equipotential lines according to the distribution of the output characteristic value, divides the image displayed on the screen into a plurality of element regions on the basis of a plurality of nodes set on each of the equipotential lines, and stores a correction value for each of the divided element regions, each of the plurality of equipotential lines being obtained by joining pixels which are located within the image displayed on the screen and have approximately the same output characteristic values;
• and
• a correction processing unit that corrects the inputted image signal for each of the element regions on the basis of the correction value stored in the correction value storage unit.

An image display device comprising:

• an image display unit having a screen on which an image is displayed and an image generating device which is paired with the screen and of which an output characteristic value has distribution;
• and
• a correction unit correcting an inputted image signal by using a correction value corresponding to the distribution of the output characteristic value and then outputting the corrected image signal to the image display unit,
• wherein the correction unit includes:
• a correction value storage unit that sets as nodes extreme values, which become maximum or minimum values of the output characteristic value, in the distribution of the output characteristic value within an image displayed on the screen, divides the image displayed on the screen into a plurality of element regions on the basis of the set nodes, and stores a correction value for each of the divided element regions;
• and
• a correction processing unit that corrects the inputted image signal for each of the element regions on the basis of the correction value stored in the correction value storage unit.