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Integrating Augmented Reality Tools in Breast Cancer Related Lymphedema Prognostication and Diagnosis

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Non-laser-based scanner for three-dimensional digitization of historical artifacts.

Daniel V Hahn¹, Kevin C Baldwin, Donald D Duncan

¹The John Hopkins University Applied Physics Laboratory, 11100 John Hopkins Road, Laurel, MD 20723-6099, USA. daniel.hahn@jhuapl.edu

|May 22, 2007

Summary

This study introduces a 3D scanner using incoherent illumination for high-resolution object scanning. It achieves detailed surface and depth information, ideal for applications like scanning cuneiform tablets.

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Area of Science:

Optics and Photonics
Computer Vision
Cultural Heritage Preservation

Background:

High-resolution 3D scanning is crucial for documenting and analyzing delicate artifacts.
Existing techniques may lack the necessary detail or versatility for specific applications like cuneiform studies.

Purpose of the Study:

To present a novel 3D scanner utilizing incoherent illumination techniques.
To achieve high lateral (5-100 microm) and depth (approx. 2 microm) resolutions.
To demonstrate its applicability for scanning cuneiform tablets and other objects.

Main Methods:

Employs incoherent illumination and advanced data-processing algorithms.
Utilizes photometric stereo to derive surface normal maps and bidirectional reflectance distribution function (BRDF) models.
Integrates structured light techniques for height information to create a cohesive 3D surface model.

Main Results:

Achieved lateral resolutions from 5 to 100 microm and depth resolution of approximately 2 microm.
Successfully generated surface normal maps and BRDF models.
Presented accurate 3D scans of Lambertian and specularly diffuse spheres, and a cuneiform tablet at 26.8 microm resolution.

Conclusions:

The developed 3D scanner offers high-resolution surface and depth data.
The combined photometric stereo and structured light approach ensures consistent 3D surface reconstruction.
The scanner is a versatile tool, particularly valuable for the detailed analysis of cultural heritage artifacts like cuneiform tablets.