UMP Institutional Repository

Inverse problem: comparison between linear back-projection algorithm and filtered back-projection algorithm in soft-field tomography

Yasmin, Abdul Wahab and Ruzairi, Abdul Rahim and Fazalul, Rahiman and Suzzana, Ridzuan Aw and Fazlul Rahman, Mohd Yunus and Jaysuman, Pusppanathan and Nor Muzakkir , Nor Ayob and Leow, Pei Ling (2017) Inverse problem: comparison between linear back-projection algorithm and filtered back-projection algorithm in soft-field tomography. International Journal of Integrated Engineering, 9 (4). pp. 32-36. ISSN 2229-838X

[img] PDF
lbpvsfbp_JT to IJIE 2017.pdf - Published Version
Restricted to Repository staff only

Download (735kB) | Request a copy

Abstract

An image reconstruction algorithm in process tomography is very important in ensure that the reconstructed image is satisfied. The back-projection algorithm is the most popular algorithm applied in process tomography including a linear back-projection (LBP) algorithm and a filtered back-projection (FBP) algorithm. The objectives of this paper are: (1) to compare the result from LBP and FBP algorithm in soft-field tomography, and (2) to investigate the effect of FBP algorithm to a reconstructed image in soft-field tomography. Also, a comparison between hard-field tomography (ultrasonic tomography) and soft-field tomography (electrical resistance tomography, ERT) had been discussed in this paper. The ERT had been conducted based on a simulation using COMSOL Multiphysics live link with MATLAB software. As a result, a nature behavior of softfield gave a main factor of inaccurate position of reconstructed image using FBP algorithm. When it multiplied with the concentration profile from LBP result, a “hill” surface sensitivity distribution and a color scale shifted in FBP gave inaccurate result. Therefore, it is believed that it gave a reason of why the FBP algorithm is not the concern on reconstructing image in soft-field tomography.

Item Type: Article
Uncontrolled Keywords: Non-iterative algorithm; filtered back-projection; linear back-projection; hard-field; soft-field
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division: Faculty of Electrical & Electronic Engineering
Depositing User: Ms. Yasmin Abdul Wahab
Date Deposited: 23 Jan 2018 05:59
Last Modified: 23 Jan 2018 06:01
URI: http://umpir.ump.edu.my/id/eprint/19738
Download Statistic: View Download Statistics

Actions (login required)

View Item View Item