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The Determination of Resolution on the Improved FBP Tomographic Algorithm  

Koo, Kil-Mo (KAERI, Heat-Hydroelectric Safety Management Team)
Hwang, Ki-Hwan (Computer Information Division, Kyung-Buk College)
Park, Chi-Seong (KAITEC, Research Center)
Ko, Duck-Young (Dept., Digital Electronic & Information, Jeon-Ju Technical College)
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Abstract
In this paper, we studied resolution to the FBP(Filtered Back-Propagation) tomographic image reconstruction algorithms. In order to analyze the resolution to the tomographic images, we derived ambiguity function to this algorithm which can be reconstructed from the improved FBP image reconstruction algorithm by using fixed coordinate system practically. Through simulation using this function, we determined the lateral and depth resolution quantitively and then analyzed respectively. Simulation results show that the lateral and depth resolution to the improved FBP image reconstruction algerian was determined $0.27\lambda\;and\;0.70\lambda$ at the 3dB, and also $0.89\lambda\;and\;0.96\lambda$ at the 6dB respectively. This results proved that improved FBP reconstruction algorithms for diffraction tomography of incident planar wave is useful to developed the tomographic image system, analyze the resolution to the tomographic images, we derived ambiguity function to this algerian which can be reconstructed from the improved FBP image reconstruction algorithm by using fixed coordinate system.
Keywords
Filtered Back-Propagation; tomographic image; depth resolution; reconstruction algorithm;
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