Vehicle Display Coordinate Projection for Low-Load Perspective Views
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Solution Overview
Problem
Displaying multiple objects in a perspective view on a vehicle-mounted display device requires complex processing, making it difficult to easily convey information to drivers for safe navigation.
Innovation Solution
A display device and method that projects three-dimensional coordinates onto a two-dimensional plane using specific formulas to convert coordinates, allowing for easier display of objects in a perspective view, utilizing a control unit and display unit with a defined coordinate system and adjustable constants for varying display modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If multiple objects are displayed in a perspective view on a vehicle-mounted display device, then the driver can easily grasp positional relationships and information, but the processing complexity increases significantly
Solution Approach 1:
The patent transforms the complex 3D perspective projection problem into a simpler 2D coordinate transformation problem by changing the dimensional parameters. Instead of performing full 3D perspective projections for multiple objects, the system uses a simplified coordinate conversion formula that maps 3D coordinates (X, Y, Z) to 2D display coordinates (xd, yd) through parameter-based calculations involving distance L and object height H, significantly reducing computational complexity while maintaining perspective view benefits
Solution Approach 2:
The patent extracts only the essential elements needed for perspective display from the full 3D coordinate system. By identifying and using only the critical parameters (horizontal position X, vertical position Z, and distance Y from camera) to generate display coordinates, the system eliminates unnecessary computational steps while preserving the core perspective viewing effect that helps drivers grasp spatial relationships
Data Source
AI summary
A display device is mounted on a vehicle. The display device comprises a display unit and a control unit A virtual screen is a two-dimensional plane at a predetermined distance away from an origin of a XYZ coordinate system along a Y coordinate axis, and is approximately parallel to an XZ plane defined by an X coordinate axis and a Z coordinate axis. The control unit is configured to calculate coordinates of a second point obtained as a result of projecting a first point in the XYZ coordinate system onto the virtual screen, convert the calculated coordinates of the second point into coordinates according to a display mode of the display unit, and cause the display unit to display an image corresponding to the second point at the converted coordinates.