3D Image Display Ray Casting Using Eye-Tracked Volume Data
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Solution Overview
Problem
Conventional medical image display devices require complex operations to obtain three-dimensional information from two-dimensional medical images, hindering quick and instant access to required information during other tasks.
Innovation Solution
A display device with a three-dimensional image display function that automatically senses viewer eye locations and calculates ray casting paths to provide stereoscopic display effects, using a processor to generate display data from volume data and eye coordinates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If two-dimensional medical images are displayed on conventional display devices, then medical personnel can view scanned results, but they cannot quickly and instantly obtain required information while performing other operations
Solution Approach 1:
The patent transitions from two-dimensional image display to three-dimensional image display by calculating ray casting paths based on viewer eye coordinates and volume data. This dimensional change enables instant three-dimensional visualization without requiring complex manual operations to obtain scanned results, thereby improving both productivity and ease of operation.
2Productivity
If three-dimensional image display function is added to display device, then instant three-dimensional viewing is enabled, but device complexity increases
Solution Approach 1:
The system automatically senses viewer eye locations and independently calculates ray casting paths without requiring manual input or complex user interaction. This self-service capability enables instant three-dimensional viewing while keeping the operational complexity manageable, as the system handles the complex calculations autonomously based on simple eye coordinate input.
3Measurement precision
If ray casting paths are calculated based on eye coordinates, then accurate three-dimensional display is achieved, but calculation complexity increases
Solution Approach 1:
The system pre-establishes the relationship between eye coordinates and ray casting paths through automated calculation based on volume data. This preliminary action enables accurate three-dimensional display by preparing the ray casting paths in advance according to the viewer's eye positions, thereby achieving high measurement precision without requiring complex real-time calculations during the actual display process.
Data Source
AI summary
A three-dimensional image display method is provided. The three-dimensional image display method includes following steps: obtaining first volume data and defining a plurality of coordinates of a plurality of voxels in the first volume data in a display device coordinate system to generate second volume data; obtaining two first eye coordinates and converting the two first eye coordinates to the display device coordinate system to generate two second eye coordinates; calculating a plurality of ray paths corresponding to a plurality of pixels of the display device; matching the ray paths with the two second eye coordinates to determine a plurality of ray casting paths; re-defining at least one portion of the plurality of ray casting paths, ; determining a plurality of sampling data corresponding to the pixels according to the second volume data and the ray casting paths to generate display data.