Stereoscopic Display Device Near-Far Depth Segmentation
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Solution Overview
Problem
Conventional display devices struggle to effectively display stereoscopic images at far distances due to high parallax, making it difficult for users to fuse and recognize 3D objects, especially when they are positioned far away, leading to challenges in visual recognition.
Innovation Solution
A display device with a controller that performs a first stereoscopic display process for projecting images for a left and right eye, and a second stereoscopic display process for portions of a pattern, gradually increasing depth direction display from near to far, allowing users to recognize 3D objects more easily by adjusting fusion progressively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If stereoscopic display is performed for faraway objects, then 3D image space is formed, but high parallax makes it difficult for users to fuse and recognize the objects
Solution Approach 1:
The display area is segmented into multiple regions with different depth characteristics. Near-side objects are displayed with normal stereoscopic parallax, while far-side objects are displayed with reduced parallax. This segmentation allows the visual system to process different depth ranges separately, making faraway objects easier to recognize without compromising the 3D effect for closer objects.
Solution Approach 2:
Different parallax characteristics are applied to different spatial regions of the display. Objects in the near field maintain full stereoscopic parallax for accurate depth perception, while objects in the far field use reduced parallax to facilitate visual fusion. This local quality adjustment optimizes both depth accuracy and recognition ease for different depth zones.
2Measurement precision
If stereoscopic display is performed for all objects, then three-dimensional image space is formed, but processing load increases
Solution Approach 1:
The display content is segmented into near-field and far-field object groups based on depth distance. This segmentation enables selective processing where only near-field objects require full stereoscopic parallax calculation, while far-field objects use simplified rendering with reduced parallax, thereby reducing overall processing load while maintaining depth perception accuracy where needed.
Solution Approach 2:
Instead of applying full stereoscopic processing to all objects, the system applies partial stereoscopic processing only to objects within a specific depth range. This partial action approach reduces computational complexity while maintaining sufficient depth perception for the most critical near-field objects, avoiding the excessive processing burden of full stereoscopic rendering for all elements.
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
Enables easier visual recognition of faraway display objects by gradually adjusting the display of patterns from near to far, reducing processing load and improving user perception of depth, thus enhancing the overall stereoscopic display experience.
Implementation Method 1
a display projects light indicating an image to a plate-shaped display medium with translucency and reflects the light to the display medium to allow a user visually recognize the image as a virtual image
Data Source
AI summary
This display device is provided with a display unit and a control unit. The display unit projects and reflects, onto a light-transmitting display medium, light expressing an image, to allow the image to be viewed, as a virtual image, by a user. The control unit performs first stereoscopic display processing for causing light respectively expressing a left-eye image and a right-eye image of an object to be displayed, to be projected in the display unit. As a result of this processing, the object to be displayed can be stereoscopically viewed in a three-dimensional image space by the user.