Head-up display device, navigation device, and display method

A display method of displaying a virtual image in front of a vehicle by a processor of a head-up display device, comprising:

• acquiring, by the processor, information related to a target object recognized from image data received from an imaging device that captures an actual view in front of the vehicle;
• generating, by the processor, a projection image to be projected as the virtual image;
• determining, by the processor, a display position of the projection image along a traveling direction of the vehicle, based on the information related to the target object, using the target object as a reference;
• transforming, by the processor, the projection image into a support image viewed from a predetermined direction;
• and
• projecting, by the processor, the support image in front of the vehicle,
• wherein the determining updates the display position of the projection image every time the acquiring acquires the image data from the imaging device, so that a speed at which a display content, corresponding to the target object within the support image, moves within the support image and approaches the vehicle within the support image, is controlled to match a speed at which the target object in the actual view moves and approaches the vehicle in the actual view.

A non-transitory computer-readable storage medium having stored therein a program which, when executed by a computer, performs process to display a virtual image in front of a vehicle, including:

• acquiring information related to a target object recognized from image data received from an imaging device that captures an actual view in front of the vehicle;
• generating a projection image to be projected as the virtual image;
• determining a display position of the projection image along a traveling direction of the vehicle, based on the information related to the target object, using the target object as a reference;
• transforming the projection image into a support image viewed from a predetermined direction;
• and
• projecting the support image in front of the vehicle,
• wherein the determining updates the display position of the projection image every time the acquiring acquires the image data from the imaging device, so that a speed at which a display content, corresponding to the target object within the support image, moves within the support image and approaches the vehicle within the support image, is controlled to match a speed at which the target object in the actual view moves and approaches the vehicle in the actual view.