Autonomous Robot Eye Control for Natural Gaze Interaction
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Solution Overview
Problem
Current robot technology lacks the ability to exhibit a presence as a pet-like companion due to the inability to demonstrate free will, which is essential for human emotional connection and solace, particularly through eye expression and gaze control.
Innovation Solution
An autonomously acting robot equipped with an operation control unit, drive mechanism, eye control unit, and recognizing unit that adjusts the robot's gaze based on the user's position and facial recognition, mimicking human-like eye contact and emotional interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the robot uses fixed gaze control, then the control system is simple, but the robot cannot exhibit natural pet-like behavior and emotional connection
Solution Approach 1:
The patent implements dynamic gaze control where the robot's eyes can independently move and change position based on detected objects or users. The eye position is adjusted in real-time according to the relative position of the user, creating natural-looking gaze behavior without requiring complex overall system redesign
Solution Approach 2:
The robot autonomously adjusts its own gaze direction and eye position based on sensor input from cameras and microphones. The system self-regulates the eye control parameters without external intervention, making the robot appear to naturally follow and engage with users or objects in its environment
2Reliability
If the robot tracks user position continuously, then the emotional connection is enhanced, but the processing load and energy consumption increase
Solution Approach 1:
The robot implements selective gaze tracking rather than continuous full-scene monitoring. The eye control unit adjusts pupil position based on detected user position and type, applying gaze control only when relevant objects or users are present in the environment, thus reducing unnecessary processing and energy consumption
Solution Approach 2:
The system uses sensor feedback from cameras and microphones to dynamically adjust eye position and gaze direction. The recognition unit processes sensor input to identify users and objects, and this feedback loop enables the robot to maintain reliable emotional connection only when needed, optimizing energy usage
3Measurement precision
If the robot uses multiple sensors for user detection, then the detection accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple sensor types (camera for visual detection, microphone for audio detection) into a unified recognition unit. The eye control unit integrates information from both sensors to determine user position and type, achieving high detection accuracy through sensor fusion rather than separate independent systems
Solution Approach 2:
The recognition unit serves multiple functions: it processes both visual and audio sensor data, identifies different types of objects and users, and provides comprehensive input for eye control decisions. This multi-functional approach reduces overall system complexity by using a single processing unit for multiple detection tasks
Data Source
AI summary
A robot includes an operation control unit that selects a motion of the robot, a drive mechanism that executes a motion selected by the operation control unit, an eye control unit that causes an eye image to be displayed on a monitor installed in the robot, and a recognizing unit that detects a user. The eye control unit causes a pupil region included in the eye image to change in accordance with a relative position of the user and the robot. A configuration may be such that the eye control unit causes the pupil region to change when detecting a sight line direction of the user, or when the user is in a predetermined range.