Summary:

- Researchers at Northwestern University have developed a smartphone app that can perform motion capture using a single smartphone camera.
- The app, called "MotionSense," can track the 3D movement of objects and people in real-time, making it a useful tool for a variety of applications such as sports analysis, physical therapy, and augmented reality.
- The app uses advanced computer vision and machine learning algorithms to analyze the video feed from the smartphone's camera, allowing it to accurately track the movement of body parts or other objects without the need for specialized hardware.