Master-Slave Imaging Control for Intuitive 3D Viewpoint Alignment
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Solution Overview
Problem
Existing master slave systems used in endoscopic surgery and similar applications fail to provide intuitive observation for users, as users cannot easily view objects from various directions, leading to insufficient intuitiveness.
Innovation Solution
A control device and master slave system that calculate and control the positional relationship between the observer's eye and an imaging unit, allowing the imaging unit to correspondingly adjust its position to match the observer's viewpoint, enabling intuitive observation by aligning the imaging unit's perspective with the observer's in both three-dimensional coordinate systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the slave-side camera is translated in accordance with the direction of the face of the master-side user, then the user can observe the object from a fixed perspective, but the user cannot observe the object as if looking around from various directions of up, down, left, and right of the object
Solution Approach 1:
The patent applies the dynamics principle by making the imaging unit's position dynamic rather than fixed. The control unit continuously adjusts the imaging unit's position based on real-time detection of the user's eye position, allowing the observation perspective to adapt dynamically as the user moves their head or eyes in different directions (up, down, left, right), thereby resolving the contradiction between fixed perspective and multi-directional observation capability
Solution Approach 2:
The patent implements feedback by detecting the user's eye position and using this information to control the imaging unit's position. The system creates a closed-loop control where the imaging perspective automatically responds to user gaze direction, enabling intuitive multi-directional observation without requiring manual camera control, thus improving both intuitiveness and adaptability
2Ease of operation
If the imaging unit's position is fixed, then the system structure is simple, but the user cannot intuitively observe the object from various directions by moving their head or eyes
Solution Approach 1:
The patent introduces an eye position detection device as an intermediary between the user and the imaging unit. This intermediary detects the user's gaze direction and translates it into corresponding imaging unit position adjustments, creating a natural bridge that enables intuitive observation without requiring complex manual control interfaces or direct coupling between user movement and camera movement
Solution Approach 2:
The patent replaces direct mechanical coupling between user head movement and camera movement with an electronic control system. Instead of mechanically linking the user's physical movements to the imaging unit, the system uses eye position detection and electronic control to achieve the same effect, reducing mechanical complexity while enabling more precise and flexible control
Data Source
AI summary
Provided is a control device including a control unit that calculates a first positional relationship between an eye of an observer observing an object displayed on a display unit and a first point in a master-side three-dimensional coordinate system, and controls an imaging unit that images the object so that a second positional relationship between the imaging unit and a second point corresponding to the first point in a slave-side three-dimensional coordinate system corresponds to the first positional relationship.