Real-Time Digital Character Control via Integrated Motion Capture
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Solution Overview
Problem
Existing motion tracking and motion capture systems are expensive, require specialized equipment, and fail to accurately capture both facial expressions and body movements of a user in real time to animate and control digital characters seamlessly.
Innovation Solution
A system comprising a headset, motion-detection sensors, controllers, a mobile computing device, microphone, and a vest with a structural member to track and capture user head and body motions, facial expressions, and audio output, integrating these data to control a digital character's corresponding movements and expressions in real time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If expensive and specialized motion capture equipment is used, then motion tracking accuracy is improved, but device cost and complexity increase
Solution Approach 1:
The system employs a mobile computing device (smartphone or tablet) that performs multiple functions: capturing facial expressions via camera, tracking head and body motion via sensors, and processing audio input. This single device replaces what would traditionally require separate specialized equipment for each function, reducing overall system complexity and cost while maintaining comprehensive motion capture capability
Solution Approach 2:
The system uses a mobile computing device that already contains integrated sensors and cameras to capture motion data, rather than requiring dedicated motion capture hardware. The device's existing camera, accelerometer, gyroscope, and microphone are leveraged to create a simplified motion tracking system that achieves sufficient accuracy for animating digital characters without expensive specialized equipment
2Measurement precision
If traditional motion capture systems are used, then body motion tracking is achieved, but facial expression capture accuracy deteriorates
Solution Approach 1:
The system combines facial expression capture, body motion tracking, and audio recording into a single integrated mobile computing device. The camera captures facial expressions, while the device's sensors track head and body movements, and the microphone records audio. All these functions are coordinated through one device, enabling seamless capture of both facial expressions and body motions simultaneously without requiring multiple specialized systems
3Speed
If real-time motion capture is implemented, then animation control speed is improved, but computational requirements and system complexity increase
Solution Approach 1:
The mobile computing device processes and analyzes motion data locally using its own computational resources. The device's processor handles facial recognition, motion tracking algorithms, and audio processing without requiring external computational infrastructure. This self-contained approach enables real-time processing and immediate animation control while keeping the system relatively simple and portable
Data Source
AI summary
In some embodiments, the present disclosure provides an exemplary technically improved system and method for controlling the body movements and facial expressions of a digital character in real time by using: a body-motion capture system comprising a headset configured to be worn on a head of a user and comprising controllers and sensors that can be used to track at least one head or body motion of the user (including arms and hands); and correspondingly control at least one head or body motion (including arms and hands) of a digital character in real time based, at least in part, on the captured motion data; a mobile computing device configured to track and capture facial expression data relating to at least one facial expression of the user, and use at least that data to correspondingly control at least one facial expression of the digital character in real time; a microphone configured to capture an audio output of the user, and control an audio output of the digital character in real-time based, at least in part, on the captured audio output; an integration computing device configured to integrate the audio output, the motion data and the facial expression data to control the audio output, the motion, and the facial expression of the digital character; a vest configured to be worn on an body of the user and a structural member attached to the vest and configured to hold the mobile computing device at a predetermined distance from a face of the user so that the mobile computing device can track and capture the at least one facial expression of the user.