Dynamic Parallax Partitioning for Head-Up Display Depth Perception
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Solution Overview
Problem
Current head-up display systems do not effectively enhance convenience by dynamically adjusting the display of virtual images based on changing driving conditions, such as vehicle distances and sizes, which can impact the driver's perception and visibility.
Innovation Solution
A virtual image display device with a display system that outputs parallax images for left and right eyes, using an optical system and a controller to change the partition of regions within the image based on detected conditions, such as vehicle distances and sizes, to adjust the parallax amounts and improve stereoscopic viewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the parallax image is displayed with fixed region partitioning, then the device structure is simple, but the adaptability to different driving conditions is poor
Solution Approach 1:
The patent applies dynamics by making the region partitioning of the parallax image dynamic rather than fixed. The controller changes the partition of regions based on detected driving conditions (vehicle distance, size), allowing the display to adapt to different situations. This resolves the contradiction by introducing dynamic adjustment capability without requiring complex hardware changes.
Solution Approach 2:
The patent changes the parallax amount parameter of different regions in the parallax image according to driving conditions. By adjusting the parallax amount in different regions based on vehicle distance and size, the system achieves adaptability to various driving scenarios while maintaining a relatively simple device structure.
2Measurement precision
If the parallax amount is increased to improve depth perception, then the stereoscopic effect is enhanced, but the visibility and comfort for the driver deteriorates
Solution Approach 1:
The patent applies local quality by setting different parallax amounts for different regions of the parallax image. Regions corresponding to vehicles at different distances have different parallax amounts, allowing accurate depth perception for each region while maintaining overall driver comfort. This resolves the contradiction by localizing the parallax effect rather than applying it uniformly.
Solution Approach 2:
The patent segments the parallax image into multiple regions with different parallax characteristics. By dividing the image based on driving conditions and applying different parallax amounts to different segments, the system achieves both accurate depth perception and driver comfort through region-specific optimization.
3Ease of operation
If the virtual image display is adjusted dynamically based on driving conditions, then the convenience and accuracy of information display is improved, but the control system complexity increases
Solution Approach 1:
The patent implements feedback by using the imaging device to detect driving conditions (vehicle distance, size) and using this information to control the region partitioning and parallax amounts of the displayed image. This feedback loop enables dynamic adjustment that improves display convenience while keeping the control system complexity manageable through automated detection and control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances driver convenience by dynamically adjusting the display to improve visibility and perception of driving conditions, allowing for clearer and more accurate representation of distances and information through the partitioning of virtual images.
Implementation Method 1
an optical system that displays a virtual image based on the parallax image
Implementation Method 2
an optical system that displays a virtual image based on the parallax image
Implementation Method 3
a display device that outputs a parallax image having a plurality of regions and in which parallax amounts of a left eye virtual image and a right eye virtual image are different
Data Source
AI summary
An object of the present disclosure is to provide a virtual image display device, a head-up display system and a vehicle which further improve convenience. The virtual image display device according to the present disclosure includes: a display device which outputs a parallax image forming a left eye virtual image and a right eye virtual image, the parallax image having a plurality of regions whose parallax amounts of the left eye virtual image and the right eye virtual image are different; an optical system which displays a virtual image based on the parallax image; and a controller which changes a partition of the plurality of regions of the parallax image according to a situation.