Motion-Blur-Free High-Speed Video Shooting Using a Resonant Mirror

Area of Science:

• Optics and Photonics
• Mechanical Engineering
• Image Processing

Background:

• Fast-moving objects pose challenges for traditional video capture due to motion blur.
• High-speed video often requires trade-offs between frame rate, exposure time, and image quality.
• Existing methods struggle to eliminate motion blur without compromising other critical video parameters.

Purpose of the Study:

• To propose and validate a novel actuator-driven frame-by-frame intermittent tracking system.
• To achieve motion-blur-free video recording of fast-moving objects.
• To maximize the performance of a free-vibration-type actuator for enhanced video capture.

Main Methods:

• Implementing frame-by-frame intermittent tracking algorithm on a high-speed camera system.
• Synchronizing camera frame and shutter timings with a resonant mirror actuator vibrating at 750 Hz.
• Utilizing a free-vibration-type actuator with large amplitude and high frequency (hundreds of Hz).

Main Results:

• Developed a prototype motion-blur-free video shooting system.
• Successfully captured 1024x1024 images at 750 fps with 0.33 ms exposure time without motion blur.
• Verified significant reduction in motion blur degradation for fast-moving objects through experimental results.

Conclusions:

• The proposed actuator-driven intermittent tracking effectively eliminates motion blur in high-speed video.
• The system achieves high-frame-rate, motion-blur-free capture without reducing camera exposure time.
• This novel approach enhances video quality for dynamic subjects, maximizing actuator performance.