Image display device and image display method

1. An image display device comprising:

a display including a head-up display configured to display a display image and to use a color information target value as a color information value of a display color, the display color being a color of the displayed image; and

second image correction circuitry configured, in a case where a color information value of a background color being a color of a background image obtained by capturing a background of the display image displayed by the head-up display is the same as or similar to the color information value of the display color of the display image obtained by capturing the display image displayed by the head-up display, to correct a color on one of a surrounding part of the display image displayed by the head-up display, an entire surface of an image display area being a range on which the display image is displayed by the head-up display excluding the display image, an inside of the display image, and an outside part of the display image, into a correction color being a color having a color information value that is different from and not similar to the color information value of the obtained background color and the color information value of the obtained display color.

2. The image display device as claimed in claim 1 , further comprising:

first image correction circuitry configured, in a case where the color information value of the display color of the display image obtained by capturing the display image displayed by the head-up display is different from the color information target value, to correct the color information value of the display color of the displayed image displayed by the head-up display, so that the color information value of the display color of the display image obtained by capturing the display image displayed by the head-up display becomes the color information target value,

wherein a process executed by the first image correction circuitry is executed prior to a process executed by the second image correction circuitry.

3. The image display device as claimed in claim 1 , wherein as the color information value of the correction color, a color information value having a relationship of an opposite color or a complementary color with respect to the color information value of the display color or the color information value of the background color is used.

4. The image display device as claimed in claim 1 , wherein when both the color information value of the display color and the color information value of the background color are color information values representing white, a color information value representing red is used as the color information value of the correction color.

5. The image display device as claimed in claim 1 , wherein as the color information value of the correction color, a color information value not included in the display image and the background image is used.

6. The image display device as claimed in claim 1 , wherein in a case where there is no color difference and no brightness difference between the display color and the background color, as the color information value of the correction color, a color information value representing a color having a luminosity different from a luminosity of the display color and a luminosity of the background color is used.

7. The image display device as claimed in claim 1 , further comprising:

a memory configured to store the color information value of the correction color.

8. The image display device as claimed in claim 1 , wherein the head-up display is to project and display the display image on a windshield of a vehicle.

9. An image display method, the method comprising:

a display step of displaying, on a head-up display, a display image, and using a color information target value as a color information value of a display color being a color of the displayed image; and

a second image correction step of, in a case where a color information value of a background color being a color of a background image obtained by capturing a background of the display image displayed by the display step on the head-up display is the same as or similar to the color information value of the display color of the display image obtained by capturing the display image displayed by the display step on the head-up display, correcting a color on one of a surrounding part of the display image displayed by the display step on the head-up display, an entire surface of an image display area being a range on which the display image is displayed by the display step on the head-up display excluding the display image, an inside of the display image, and an outside part of the display image, into a correction color being a color having a color information value that is different from and not similar to the color information value of the obtained background color and the color information value of the obtained display color.

10. The image display method as claimed in claim 9 , the method further comprising:

a first image correction step of, in a case where the color information value of the display color of the display image obtained by capturing the display image displayed by the display step on the head-up display is different from the color information target value, correcting the color information value of the display color of the displayed image displayed by the display step on the head-up display, so that the color information value of the display color of the display image obtained by capturing the display image displayed by the display step on the head-up display becomes the color information target value,

wherein the first image correction step is executed prior to the second image correction step.

11. The image display device according to claim 1 , further comprising:

a camera which performs the capturing of the background of the display image displayed by the display.

12. The method according to claim 9 , further comprising:

capturing, using a camera, the background of the display image displayed by the display.

13. The method according to claim 10 , further comprising:

capturing, using a camera, the background of the display image displayed by the display.