Curvature-Based Margin Line Point Selection in Dental CAD
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Solution Overview
Problem
Existing dental CAD software faces inaccuracies and inconvenience when users manually select margin line points, requiring repetitive visual inspection and cursor movement for precise picking.
Innovation Solution
A method and device that automatically searches for and recommends the optimal margin line point based on the cursor position, allowing users to pick the point with improved accuracy and efficiency by previewing the recommended point on the screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a user manually picks a margin line point by moving the cursor to the accurate position on the screen, then the point selection can be performed with full control, but the operation becomes inconvenient and time-consuming requiring repetitive zoom-in and cursor adjustment
Solution Approach 1:
The system automatically identifies and recommends the optimum margin line point based on curvature analysis without requiring the user to manually locate it. The software serves itself by performing the precise measurement and presentation of the candidate point, freeing the user from repetitive cursor movement and zoom operations while maintaining high accuracy through mathematical curvature calculation.
Solution Approach 2:
The system performs preliminary analysis by calculating curvature values for all points on the margin line before the user makes a selection. This preliminary computation identifies candidate points in advance, allowing the user to simply review and confirm rather than manually search for the accurate position, thus improving both convenience and efficiency.
2Measurement precision
If the user performs repetitive zoom-in operations and camera direction setting to accurately locate margin line points, then the picking precision can be improved, but the time and number of operations required increases significantly
Solution Approach 1:
The patent replaces the mechanical interaction of manual cursor movement, zooming, and camera adjustment with an automated computational system. The software uses mathematical curvature analysis to automatically locate and present the optimum margin line point, substituting manual mechanical operations with algorithmic processing that achieves higher precision faster.
Solution Approach 2:
The system changes the approach from spatial navigation (moving cursor, zooming) to parameter-based identification (curvature calculation). By computing curvature values as a parameter for each point on the margin line, the system directly identifies the optimum point without requiring temporal investment in manual search operations.
3Measurement precision
If the software automatically searches for the optimum margin line point based on cursor position, then the picking accuracy and precision are improved through mathematical analysis, but the automation level and system complexity increases
Solution Approach 1:
The patent introduces curvature as an intermediary parameter between the margin line geometry and the point selection decision. Rather than directly implementing complex automated point picking, the system uses curvature calculation as a mediator that translates geometric information into a clear criterion for identifying the optimum point, simplifying the overall system architecture.
4Measurement precision
If the user reviews and picks the recommended optimum margin line point, then the accuracy of point selection is enhanced, but an additional review step is required
Solution Approach 1:
The system implements feedback by presenting the automatically identified optimum margin line point to the user for review and confirmation. This feedback loop allows the user to verify the system's automatic selection, ensuring high accuracy while maintaining efficiency since the review involves simply confirming a pre-analyzed candidate rather than performing manual search.
Data Source
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AI summary
A margin line point picking method and a dental CAD device for the same are disclosed. In a margin line point picking method according to one embodiment, while a user picks a margin line point, a preset optimum margin line point is recommended by showing a preview thereof on a screen. Accordingly, it is possible to address the inconvenience that the user has to find and pick an accurate point.