Marker Navigation System for Dynamic Display Region Adjustment
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Solution Overview
Problem
Conventional marker navigation systems face challenges in distinguishing between camera movement and movement of attached markers, leading to unclear changes in the displayed region, and large relative movements causing objects to be 'off the display', requiring frequent adjustments.
Innovation Solution
A system that detects and compensates for absolute movements of marker-equipped objects, allowing independent tracking and optimal display within a camera reference frame, using a detection system and data processing to determine changes and apply transformations to maintain accurate representation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a display shows only a particular region or section of the operating area, then the display resolution and detail for that region is improved, but when marker means move outside the display region, the objects become invisible and require frequent display adjustments
Solution Approach 1:
The display system dynamically adjusts the display region based on the detected positions of marker means. The data processing device continuously monitors marker locations and automatically updates the display area to keep tracked objects within view, eliminating the need for manual adjustments while maintaining high display resolution for the relevant region.
2Productivity
If the display area is enlarged to show more region, then objects are less likely to move off display, but the display resolution and detail for each object decreases
Solution Approach 1:
The system dynamically determines the optimal display area based on the positions of marker means within the detection region. When objects are concentrated in a small area, the display shows a focused high-resolution view of that region. When objects are dispersed, the display automatically expands to cover the necessary area, maintaining appropriate resolution by adapting to the actual spatial distribution of tracked objects.
3Measurement precision
If the reference frame is bound to one fragment, then that fragment's position is stable in display, but other fragments cannot show their absolute movements in the camera reference frame
Solution Approach 1:
The system separates the reference frame functionality into two independent components: a display reference frame bound to a selected fragment for stable visual representation, and a camera reference frame that tracks absolute positions of all fragments. The data processing device calculates transformations for both frames independently, allowing each fragment's absolute movement to be detected and displayed while maintaining the stability of the selected reference fragment in the display.
Data Source
AI summary
A marker navigation system for detecting and displaying locations of at least two reference devices, each reference device attachable to a corresponding object includes a detection device for detecting signals emitted from the at least two reference devices, a display device for displaying the locations of the at least two reference devices and/or the objects attached to the at least two reference devices based in accordance with display signals; and a data processing device. The data processing device is configured to a) calculate locations of the at least two reference devices based on the detected signals; b) determine changes in the locations of the at least two reference devices based on the calculated locations; c) check, based on the determined changes, whether the changes in the locations of the at least two reference devices can be described by at least one checking transformation that, to a predetermined extent, transforms the locations of the at least two reference devices before the change into the locations of the at least two reference devices after the change; and d) determine the display signals for displaying the locations of the at least two reference devices and/or of objects attached to the at least two reference devices as a function of the checking result.