Display control device, display device, and display control program product for superimposing an emphasized image item

1. A display control device mounted on a vehicle installed with a parking support function, the display control device controlling a display mounted on the vehicle to display a rear image captured by a rear camera, the rear camera capturing a rear area of the vehicle, the display control device comprising:

an image acquisition unit acquiring the rear image captured by the rear camera; and

an image processing unit superimposing, in response to the parking support function that supports parking of the vehicle at a target parking position being activated, a target image item indicating the target parking position at a predetermined position of the rear image which corresponds to the target parking position, the target image item having a frame shape or a planner shape,

wherein

the image processing unit is configured to:

superimpose at least a part of the target image item in a translucent manner on the rear image;

superimpose, on the rear image, an emphasized image item that emphasizes at least four corners of the target image item; and

superimpose the emphasized image item on the rear image in a translucent manner at a position where the emphasized image item does not overlap with the target image item.

2. The display control device according to claim 1 , wherein

the image processing unit draws the emphasized image item with a color different from a color of the target image item.

3. The display control device according to claim 2 , wherein

the image processing unit draws the emphasized image item in white and draws the target image item in a color other than white.

4. The display control device according to claim 1 , wherein

the image processing unit superimposes the emphasized image item on the rear image at a position where the emphasized image item is in contact with the target image item.

5. The display control device according to claim 4 , wherein

the image processing unit defines a drawing reference line having a predetermined width at a position corresponding to the target parking position in the rear image, and

the image processing unit sets the target image item at an inner portion of the drawing reference line and sets the emphasized image item at an outer portion of the drawing reference line.

6. The display control device according to claim 1 , wherein

each of the target image item and the emphasized image item has a frame shape, and

a width of a line that configures the emphasized image item is set to be smaller than a width of a line that configures the target image item.

7. The display control device according to claim 1 , wherein

the emphasized image item has a shape that surrounds an entire outer peripheral of the target image item.

8. The display control device according to claim 1 , wherein

the display control device displays, on the display together with the rear image, a different image having a range different from a range of the rear image,

the different image and the rear image are arranged in a lateral direction on the display, and

the image processing unit is configured to:

superimpose a different viewpoint image item indicating the target parking position at a predetermined position of the different image which corresponds to the target parking position, the different viewpoint image item having a frame shape or a planner shape; and

display the different viewpoint image item in an opaque manner or display the different viewpoint image item with a transmittance lower than a transmittance of the target image item.

9. A display device mounted on a vehicle installed with a parking support function, the display device displaying a rear image captured by a rear camera, the rear camera capturing a rear area of the vehicle, the display device comprising:

an image acquisition unit acquiring the rear image captured by the rear camera;

an image processing unit superimposing, in response to the parking support function that supports parking of the vehicle at a target parking position being activated, a target image item indicating the target parking position at a predetermined position of the rear image which corresponds to the target parking position, the target image item having a frame shape or a planner shape; and

a display displays the rear image on which the target image item is superimposed,

wherein

the image processing unit is configured to:

superimpose at least a part of the target image item in a translucent manner on the rear image;

superimpose, on the rear image, an emphasized image item that emphasizes at least four corners of the target image item; and

superimpose the emphasized image item on the rear image in a translucent manner at a position where the emphasized image item does not overlap with the target image item.

10. A display control program product used in a vehicle installed with a parking support function, the display control program product being stored in a computer-readable non-transitory tangible storage medium as instructions to be executed by at least one processing unit to control a display mounted on the vehicle to display a rear image captured by a rear camera, the instructions comprising:

acquiring the rear image captured by the rear camera; and

in response to the parking support function that supports parking of the vehicle at a target parking position being activated, superimposing a target image item and an emphasized image item on the rear image;

wherein

the target image item indicates the target parking position with a frame shape or a planner shape,

the target image item is superimposed on the rear image at a position corresponding to the target parking position and at least a part of the target image item is superimposed in a translucent manner on the rear image, and

the emphasized image item emphasizes at least four corners of the target image item,

the emphasized image item is superimposed on the rear image in a translucent manner at a position where the emphasized image item does not overlap with the target image item.