Vehicle Display Device Blur Processing for Double Image Suppression
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Solution Overview
Problem
Conventional vehicle display devices face challenges in enhancing image visibility, particularly due to parallax issues that cause discomfort from double images when graphic elements span across the boundary between regions viewed by both eyes and those viewed by only one eye.
Innovation Solution
A vehicle display device with an image display unit, optical system, and controller that executes blur processing on graphic images when they cross the boundary between regions, ensuring a seamless visual experience by blurring the edges and adjusting blur intensity based on eye positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If an image is displayed across the boundary between the first region (viewed by both eyes) and the second region (viewed by one eye), then the image can be displayed in a wider area, but double images are generated causing driver discomfort
Solution Approach 1:
The patent applies different processing to different regions of the display. Specifically, when a graphic image crosses the boundary between the first region (viewed by both eyes) and second region (viewed by one eye), blur processing is applied to the portion in the second region. This local differentiation resolves the contradiction by maintaining clear display in the binocular region while suppressing double image effects in the monocular region through selective blurring.
2Object-affected harmful factors
If blur processing is applied to suppress double images, then driver comfort is improved, but image clarity may be reduced
Solution Approach 1:
Blur processing is applied selectively only to the portion of the graphic image that extends into the second region (monocular viewing area), while the portion in the first region (binocular viewing area) maintains its original clarity. This localized approach suppresses double image effects where needed while preserving image clarity in regions where both eyes can view the content.
Solution Approach 2:
The graphic image is conceptually segmented into two portions: the part within the first region and the part within the second region. Different processing strategies are applied to each segment - the first region portion maintains sharpness for clear binocular viewing, while the second region portion receives blur processing to prevent double image discomfort.
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
The solution effectively suppresses the generation of double images, improving image visibility and reducing driver discomfort by ensuring that graphic elements are recognized as a single image across the boundary regions.
Implementation Method 1
an optical system that projects the display light emitted from the image display unit toward a reflection face in front of a driver
Data Source
AI summary
Provided is a vehicle display device that includes: an image display unit that emits display light of an image; an optical system that projects the display light emitted from the image display unit toward a reflection face in front of a driver; and a controller that controls the image display unit. The image has a first region that is a region viewed by both eyes of the driver and a second region that is a region of the image on an end part side in an image lateral direction relative to the first region. In a case where a graphic image included in the image is across a boundary between the first region and the second region, the controller executes blur processing on the graphic image.