Vehicle display device
A vehicle display device includes an HUD device that projects a display image onto a front windshield arranged in front of a driver's seat of a vehicle, and overlaps the display image with scenery in front of the vehicle to display the display image as a virtual image, and a front photographing camera that is installed in the vehicle and photographs at least the scenery in front of the vehicle. The HUD device adjusts contrast of the display image with respect to the scenery in front of the vehicle based on an image of an extracted image region including a portion overlapping with at least part of the display image when viewed from an eye point in a scenery photographing image photographed by the front photographing camera, the eye point corresponding to a position of an eye of a driver on the driver's seat.
1. A vehicle display device, comprising:
a display unit that projects a display image onto a reflection member arranged in front of a driver's seat of a vehicle, and overlaps the display image with scenery in front of the vehicle to display the display image as a virtual image; and
a photographing unit that is installed in the vehicle and photographs at least the scenery in front of the vehicle, wherein
the display unit adjusts contrast of the display image to the scenery in front of the vehicle based on an image of an extracted image region including a portion overlapping with the display image when viewed from an eye point in a photographing image photographed by the photographing unit, the eye point corresponding to a position of an eye of a driver on the driver's seat,
when the display image includes a display item of high priority and a display item of low priority that display different items of information from each other, the extracted image region includes a portion where the display item of high priority overlaps and does not include a portion where the display item of low priority overlaps, when viewed from the eye point such that the display unit sets contrast of the extracted image region that includes the portion where the display item of high priority overlaps to be different from the portion of the display image where the display item of low priority overlaps.
2. The vehicle display device according to claim 1 , wherein
the photographing unit photographs the scenery in front of the vehicle from an outside of an eye box as a region in which the display image can be visually recognized.
3. The vehicle display device according to claim 2 , further comprising:
a detector that detects the eye point, wherein
the extracted image region is a region that is determined based on the eye point detected by the detector.
4. The vehicle display device according to claim 2 , wherein
the display unit includes
a projector that projects the display image, and
a mirror that reflects the display image projected by the projector to the reflection member, and
the extracted image region is a region that is determined based on a reflection angle of the mirror.
5. The vehicle display device according to claim 4 , wherein
when the display image includes a display item having high priority, the extracted image region is a region including a portion overlapping with the display item having high priority when viewed from the eye point in the photographing image.
6. The vehicle display device according to claim 2 , wherein
the extracted image region is a largest region that is possibly overlapped with the display image when viewed from the eye point in the photographing image.
7. The vehicle display device according to claim 1 , further comprising:
a detector that detects the eye point, wherein
the extracted image region is a region that is determined based on the eye point detected by the detector.
8. The vehicle display device according to claim 1 , wherein
the display unit includes
a projector that projects the display image, and
a mirror that reflects the display image projected by the projector to the reflection member, and
the extracted image region is a region that is determined based on a reflection angle of the mirror.
9. The vehicle display device according to claim 8 , wherein
when the display image includes a display item having high priority, the extracted image region is a region including a portion overlapping with the display item having high priority when viewed from the eye point in the photographing image.
10. The vehicle display device according to claim 1 , wherein
the extracted image region is a largest region that is possibly overlapped with the display image when viewed from the eye point in the photographing image.
11. The vehicle display device according to claim 1 , wherein
the display unit adjusts the contrast of the display image which includes the display item of high priority and the display item of low priority based on the image of the extracted image region.