3D Image Depth Measurement Using Pupil Parallax
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Solution Overview
Problem
Current 3D image display technologies, particularly autostereoscopic methods, face challenges in objectively quantifying the depth of a 3D image, as viewers experience binocular parallax but lack a numerical representation of depth.
Innovation Solution
An apparatus and method that measure the change in distance between pupils to determine the projecting or recessed distance of a real object, allowing for the calculation of a depth value of a 3D image by displaying a left-eye and right-eye image, using a depth measurement unit, parallax measurement unit, and depth value calculation unit to quantify the depth perceived by multiple viewers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If autostereoscopic 3D image display devices are used to eliminate the need for special glasses, then viewer convenience is improved, but the ability to objectively quantify depth is lost
Solution Approach 1:
The patent introduces an intermediary measurement system that includes a depth measurement unit and parallax measurement unit. These units act as mediators between the 3D display and the viewer, objectively measuring the depth information and parallax changes without requiring the viewer to manually measure or subjectively perceive depth values.
Solution Approach 2:
The patent replaces subjective mechanical measurement methods with an automated optical measurement system. Instead of relying on viewers to manually assess depth, the system uses optical components to automatically measure parallax changes and calculate depth values, substituting human perception with objective optical measurement.
2Reliability
If binocular parallax is used to create 3D effect, then depth perception is improved, but objective numerical representation of depth is lost
Solution Approach 1:
The patent implements a feedback mechanism where the parallax measurement unit continuously monitors changes in the distance between pupils, and the depth value calculation unit processes this information to provide objective numerical depth representations. This feedback loop converts subjective depth perception into quantifiable data.
Solution Approach 2:
The patent changes the parameter representation from subjective depth perception to objective numerical values. By measuring parallax changes (change in pupil distance) and converting them into depth values, the system transforms qualitative depth information into quantitative parameters that can be objectively represented and compared.
3Measurement precision
If depth measurement is performed for multiple viewers, then measurement accuracy is improved, but measurement complexity increases
Solution Approach 1:
The patent designs a universal measurement system that can accommodate multiple viewers through a single integrated apparatus. The depth measurement unit and parallax measurement unit serve multiple functions: measuring depth for different viewers, comparing depth values across viewers, and providing standardized depth representations. This multi-functionality reduces the need for multiple separate measurement systems.
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 the objective and quantitative measurement of 3D image depth, allowing for precise adjustment and application in various products, reducing subjective perception of depth.
Implementation Method 1
3D image display techniques create a 3D effect of an object using binocular parallax as the most important factor that causes the 3D effect at a short distance
Implementation Method 2
a parallax measurement unit which measures a distance between pupils of an experimenter based on the projecting distances or recessed distances of the 3D image and the real objects
Data Source
AI summary
An apparatus for measuring a depth of a 3D image includes a display panel unit which produces a 3D image by displaying a left-eye and a right-eye image, a depth measurement unit which measures projecting distances or recessed distances of the 3D image and a real object, a parallax measurement unit which measures a distance between pupils of an experimenter based on the projecting distances or recessed distances of the 3D image and the real objects, and a depth value calculation unit which calculates an average value of the projecting distances or recessed distances of the real object with respect to a plurality of experimenters measured when a change in distance between pupils is the same as a change in distance between pupils measured by adjusting the projecting distance or recessed distance of the 3D image, and determines the calculated average value as a depth value of the 3D image.