Optimization reconstruction method of object profile using flexible laser plane and bi-planar references

Area of Science:

• * Computer Vision
• * Metrology
• * 3D Reconstruction

Background:

• * Accurate 3D object profile reconstruction is crucial for various industrial applications.
• * Existing methods often face challenges with precision and flexibility in coordinate system transformations.
• * Bi-planar references offer a novel approach to establish robust coordinate system relationships.

Purpose of the Study:

• * To develop and evaluate an optimized method for 3D object profile reconstruction.
• * To enhance the accuracy of reconstruction by minimizing errors using an optimization function.
• * To demonstrate the effectiveness of bi-planar references in improving spatial calibration and reconstruction.

Main Methods:

• * Utilized a flexible laser plane and bi-planar references for coordinate system transformations.
• * Confirmed the laser plane through intersection points with bi-planar references.
• * Implemented an optimization function based on reconstruction distances and reprojection errors from a target with eight markers.

Main Results:

• * Initial reconstruction method achieved a mean error of 1.01 mm.
• * The optimized reconstruction method significantly reduced the mean error to 0.93 mm.
• * Evaluation involved comparing true distances with standard distances, validating the method's accuracy.

Conclusions:

• * The proposed optimization method with bi-planar references enhances 3D profile reconstruction accuracy.
• * This technique shows significant potential for applications requiring precise object profile measurement.
• * Bi-planar references provide a flexible and effective benchmark for spatial calibration.