Vehicle Head-Up Display Dynamic Guide Image Sizing
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Solution Overview
Problem
Existing head-up display technologies cause a troublesome feeling for drivers when display-targeting objects move out of the display region, leading to decreased forward visibility and awkward icon placement at the edges of the screen.
Innovation Solution
A head-up display system that includes a display unit, an automobile information acquirer, a forward environment information acquirer, a display-targeting object detector, and a display controller, which generates and overlays guide images on the windshield, darkening or simplifying them when the display-targeting object moves out of the display area to maintain visibility and prevent sudden disappearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the guide image is enlarged as the display-targeting object approaches the automobile, then the display size is improved, but the forward visibility decreases causing troublesome feeling to the driver
Solution Approach 1:
The patent applies dynamics by making the guide image display size variable rather than fixed. The control unit dynamically adjusts the display size based on the distance between the automobile and the display-targeting object, enlarging the image when the object is far away and reducing it when the object approaches, thereby maintaining optimal visibility without obstructing the driver's forward view
Solution Approach 2:
The patent changes the display parameter (size) of the guide image based on the distance parameter to the display-targeting object. By monitoring distance and adjusting the guide image size accordingly, the system optimizes the balance between providing sufficient information and maintaining forward visibility
2Loss of information
If the guide image is overlay-displayed on the display-targeting object, then the information accuracy is improved, but the guide image suddenly disappears when the object goes out of display region causing troublesome feeling
Solution Approach 1:
The patent applies preliminary action by preparing alternative display content (icon indicating direction) in advance before the display-targeting object completely leaves the display region. When the object approaches the boundary, the system proactively switches to or prepares the alternative icon display, ensuring continuous information provision without sudden disappearance
Solution Approach 2:
The patent introduces an intermediary element (directional icon) that serves as a transition between the overlay guide image and complete disappearance. When the display-targeting object moves out of the display region, this intermediary icon provides continuous directional information, bridging the gap and maintaining information flow
3Loss of information
If the icon is displayed at a left edge or right edge of the display screen when the display-targeting object goes out of display region, then the direction information is provided, but the display provides awkward feeling to the driver
Solution Approach 1:
The patent applies local quality by positioning the directional icon at the edge of the display region that corresponds to the direction where the display-targeting object has moved. Rather than always displaying at a fixed position, the icon's location adapts to the object's departure direction, providing intuitive spatial correspondence that feels more natural to the driver
Data Source
AI summary
An image synthesizer apparatus for vehicle includes an image generator and an error detector. From multiple cameras arranged to a vehicle so that an imaging region of each camera partially overlaps with an imaging region of an adjacent camera, the image generator acquires images of areas allocated to the respective cameras, and synthesizes the acquired images to generate a synthetic image around the vehicle viewed from a viewpoint above the vehicle. The error detector detects errors in the cameras. When the error detector detects a faulty camera in the cameras, the image generator acquires, from the image captured by the camera adjacent to the faulty camera, an overlap portion overlapping with the image captured by the faulty camera, uses the overlap portion to generate the synthetic image, and applies image reinforcement to the overlap portion.