Real-time high-speed three-dimensional surface imaging using band-limited illumination profilometry with a CoaXPress...

Area of Science:

• Optics and Photonics
• Mechanical Engineering
• Fluid Dynamics

Background:

• Structured-light profilometry is crucial for 3D surface imaging across various applications.
• Existing methods face limitations in speed for fringe pattern projection, image acquisition, and data transmission, hindering real-time dynamic event analysis.
• Kilohertz-level acquisition, processing, and display of 3D data for dynamic events remain a significant challenge.

Purpose of the Study:

• To develop a high-speed 3D surface imaging system capable of real-time data acquisition and processing.
• To overcome the speed limitations of conventional structured-light profilometry for dynamic events.
• To demonstrate the system's efficacy in capturing fast-moving objects and fluid dynamics.

Main Methods:

• Development of band-limited illumination profilometry (BLIP) integrated with a CoaXPress interface (CI).
• Implementation of high-speed fringe pattern projection and image acquisition.
• Real-time processing and display of 3D surface data.

Main Results:

• Demonstrated real-time high-speed 3D surface imaging capabilities.
• Successfully imaged various static and fast-moving 3D objects.
• Applied the system to fluid mechanics, capturing flag dynamics including wave propagation and flapping motion.

Conclusions:

• The CoaXPress interface integrated band-limited illumination profilometry (CI-BLIP) system effectively enables real-time high-speed 3D surface imaging.
• The system overcomes previous speed bottlenecks in structured-light profilometry.
• CI-BLIP shows significant potential for diverse scientific and industrial applications, particularly in analyzing dynamic events.