Dynamic Model Correction via Position-Time Visualization
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Solution Overview
Problem
Current tracking methods for dynamic structures in image sequences, such as those used in medical imaging, face difficulties in accurately correcting errors in dynamic models, as both the target structure and the dynamic model move synchronously, making it challenging to identify and correct errors.
Innovation Solution
A method that involves creating a position-time representation by determining a position time section within the image sequence, allowing for the comparison and correction of dynamic models by overlaying computer graphical objects onto this representation, enabling users to edit and adjust the models to ensure accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If tracking methods are used to automatically create dynamic models of moving structures, then productivity is improved, but measurement precision deteriorates due to difficulty in identifying and correcting errors
Solution Approach 1:
The patent introduces a position-time representation as an intermediary visualization tool that mediates between the automatic tracking process and human verification. This representation displays the dynamic model's position over time in a simplified format, allowing users to easily identify tracking errors without manually analyzing each frame of the image sequence.
2Reliability
If the dynamic model and target structure both move synchronously, then the tracking method works correctly, but ease of operation deteriorates because error correction becomes difficult
Solution Approach 1:
The patent transforms the error correction problem from spatial domain to time-domain visualization. By displaying the dynamic model's position along a time axis in the position-time representation, errors become visually distinct patterns that are easier to identify and correct than spatial deviations in moving images.
3Measurement precision
If overlay presentation of dynamic model with image sequence is used to verify tracking, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts the essential verification information from the complex image sequence by projecting the dynamic model's position onto a one-dimensional time axis. This extraction creates a simplified position-time representation that retains tracking accuracy information while removing the visual complexity of the original image sequence.
Data Source
AI summary
The invention relates to a method and an apparatus for correcting dynamic models (4) of moving structures (2), said dynamic models being obtained by tracking methods. The method comprises the following steps: (a) providing a time series of images (B) of the moving structure (2) recorded successively in time; (b) providing a dynamic model (4) of the structure (2), said dynamic model being obtained by a tracking method; (c) determining a position time section (h) in the images (B); (d) providing a position-time representation (6) over time of the optionally interpolated image values of the position time section (h) in the images, combined with a representation of the dynamic model (4) as at least one computer graphical object (10); (e) comparing the computer graphical object (10) with the surrounding image content (8), in particular by a user, and (f) correcting the dynamic model (4) by editing the at least one computer graphical object (10), in particular by a user.