Three-dimensional shape measurement with an arbitrarily arranged projection moiré system

Area of Science:

• Optical Metrology
• 3D Shape Measurement
• Computational Imaging

Background:

• Traditional 3D shape measurement systems often require rigid configurations.
• Manual determination of geometric parameters can be complex and time-consuming.
• Existing methods may lack flexibility in component arrangement.

Purpose of the Study:

• To present a versatile three-dimensional shape measurement method using an arbitrarily arranged projection moiré system.
• To eliminate the need for specific system setups and manual geometric parameter determination.
• To achieve high measurement resolution and accuracy with flexible component positioning.

Main Methods:

• Mathematical derivation of theoretical equations for arbitrary projection moiré systems.
• Development of a phase-to-height calibration technique.
• Experimental validation using a practical object with arbitrarily positioned components.

Main Results:

• The proposed method successfully measures 3D shapes without predefined system configurations.
• High measurement resolution and accuracy were achieved.
• Experimental results validated the effectiveness of the arbitrary arrangement approach.

Conclusions:

• The developed projection moiré system offers a flexible and accurate solution for 3D shape measurement.
• The method's adaptability to arbitrary component positioning simplifies practical implementation.
• This technique advances optical metrology for complex object analysis.