Real-Time Motion Capture in Your Pocket

Real-Time Motion Capture in Your Pocket

Source: https://news.northwestern.edu/stories/2024/10/app-performs-motion-capture-with-a-smartphone/?utm_source=aibreakfast.beehiiv.com&utm_medium=newsletter&utm_campaign=ai-video-goes-open-source&_bhlid=c1a5269c8e203b33434f0b060fc92e455876dc2e

MobilePoser, a real-time system designed for full-body motion capture using inertial measurement units (IMUs) present in consumer devices like phones, watches, and earbuds. The aim of MobilePoser is to perform accurate full-body pose and motion estimation using the minimal hardware already available in everyday technology.

Here’s a breakdown:

• Trend and Challenge: Motion capture technology has evolved from requiring specialized equipment to using more accessible IMUs in common devices. However, as the technology relies on lower-quality sensors, challenges like performance degradation, inconsistency over time, and inaccurate translation due to sensor noise arise.
• MobilePoser: To address these issues, MobilePoser integrates deep learning and physics-based optimization. It processes IMU data from any available subset of devices, estimating the user's full-body pose and motion in real time.
• Two Main Modules:
• Physics Optimizer: Refines the results to ensure the estimated body motion follows physical constraints, improving the overall accuracy.
• Applications: MobilePoser can be applied to various fields such as health monitoring, gaming, and indoor navigation by leveraging the ubiquitous use of commodity devices.

In summary, MobilePoser is a cutting-edge solution for motion capture that doesn't require specialized equipment, making it more accessible for real-world applications while maintaining accuracy through advanced AI and physics-based techniques.