The method of high-accuracy 3D reconstruction for oblique X-ray CT images

Satoshi Yoshizawa, Toshiyuki Tanaka, Kazuo Kikuchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

X-ray CT system for industrial inspection has some problems when it inspects flat objects. The problems are expansion rate and contrast. We previously implemented an oblique X-ray CT system, and found those problems were almost solved and mat vertical accuracy was comparatively low. We now intend to improve the vertical accuracy by implementing extra two-arc cone-beam X-ray scan. The two-arc scan is for compensating the lack of data from the conventional oblique scan. The overall reconstruction algorithm is based on inverse Radon transform and Grangeat's formula. In order to evaluate the accuracy of reconstructed images quantitatively, the computer simulation using a BGA phantom was implemented. Through the study it was revealed that the proposed method can compensate the previous reconstruction accuracy, and that proper distribution from both oblique scan and two-arc scan is needed for the correct reconstruction.

Original languageEnglish
Title of host publicationSICE Annual Conference, SICE 2007
Pages146-150
Number of pages5
DOIs
Publication statusPublished - 2007 Dec 1
EventSICE(Society of Instrument and Control Engineers)Annual Conference, SICE 2007 - Takamatsu, Japan
Duration: 2007 Sep 172007 Sep 20

Publication series

NameProceedings of the SICE Annual Conference

Other

OtherSICE(Society of Instrument and Control Engineers)Annual Conference, SICE 2007
CountryJapan
CityTakamatsu
Period07/9/1707/9/20

Keywords

  • 3D reconstruction
  • Feldkamp algorithm
  • Grangeat's algorithm
  • Oblique CT
  • X ray computed tomography

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering

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