Home › Neuroscience › High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
Neuroscience JoVE (Open Access) Citable · DOI

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

DOI: 10.3791/50421-v
What you'll learn
  • ✓ Understand digital fringe projection fundamentals for 3D surface measurement
  • ✓ Design and configure a high-speed binary defocusing imaging system
  • ✓ Acquire and analyze dense 3D data from dynamically changing surfaces
  • ✓ Visualize and interpret high-resolution temporal surface deformation
Protocol

This video describes the fundamentals of digital fringe projection techniques, which provide dense 3D measurements of dynamically changing surfaces. It also demonstrates the design and operation of a high-speed binary defocusing system based on these techniques.

Difficulty
advanced
Total time
~4–8 hours (system setup, calibration, and multi-acquisition imaging session)

Steps

1
Configure optical and electronic system components

Assemble the high-speed fringe projection system including light source, projection optics, camera, and defocusing mechanism according to design specifications.

▶ 02:26
2
Calibrate system geometry and depth mapping

Perform system calibration to establish geometric relationships between projected patterns, camera view, and 3D spatial coordinates for accurate surface reconstruction.

▶ 04:43
3
Acquire high-speed fringe projection image sequences

Capture rapid sequential images of the target surface as binary fringe patterns are projected and deformed to encode 3D information.

▶ 06:13
4
Process and visualize reconstructed 3D point clouds

Decode fringe patterns from acquired images, compute depth maps, and generate dense 3D surface point clouds for each time frame.

▶ 06:52
5
Evaluate captured surface deformation imagery

Review example 3D reconstructions and temporal image sequences demonstrating system capability for high-resolution, high-speed dynamic surface measurement.

▶ 08:50
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