Three-dimensional object recognition using x-ray imaging

Sekwon Yeom; Bahram Javidi; Young Jun Roh; Hyung Suck Cho

doi:10.1117/1.1844532

1 February 2005 Three-dimensional object recognition using x-ray imaging

Sekwon Yeom, Bahram Javidi, Young Jun Roh, Hyung Suck Cho

Author Affiliations +

Optical Engineering, Vol. 44, Issue 2, 027201 (February 2005). https://doi.org/10.1117/1.1844532

Abstract

This paper presents a distortion-tolerant 3-D volume object recognition technique. Volumetric information on 3-D objects is reconstructed by x-ray imaging. We introduce 3-D feature extraction, volume matching, and statistical significance testing for the 3-D object recognition. The 3D Gabor-based wavelets extract salient features from 3-D volume objects and represent them in the 3-D spatial-frequency domain. Gabor coefficients constitute feature vectors that are invariant to translation, rotation, and distortion. Distortion-tolerant volume matching is performed by a modified 3-D dynamic link association (DLA). The DLA is composed of two stages: rigid motion of a 3-D graph, and elastic deformation of the graph. Our 3-D DLA presents a simple and straightforward solution for a 3-D volume matching task. Finally, significance testing decides the class of input objects in a statistical manner. Experiment and simulation results are presented for five classes of volume objects. We test three classes of synthetic data (pyramid, hemisphere, and cone) and two classes of experimental data (short screw and long screw). The recognition performance is analyzed in terms of the mean absolute error between references and input volume objects. We also confirm the robustness of the recognition algorithm by varying system parameters.

©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Sekwon Yeom, Bahram Javidi, Young Jun Roh, and Hyung Suck Cho "Three-dimensional object recognition using x-ray imaging," Optical Engineering 44(2), 027201 (1 February 2005). https://doi.org/10.1117/1.1844532

Published: 1 February 2005

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