Edge localized image sharpening via reassignment with application to computed tomography

Timothy Dorney; Srikrishna Bhashyam; Andrew Doran; Hyeokho Choi; Patrick Flandrin; Richard Baraniuk

Edge localized image sharpening via reassignment with application to computed tomography

Timothy Dorney, Srikrishna Bhashyam, Andrew Doran, Hyeokho Choi, Patrick Flandrin, Richard Baraniuk

Houston Methodist

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Traditional filtering methods operate on the entire signal or image. In some applications, however, errors are concentrated in specific regions or features. A prime example is images generated using computed tomography. Practical implementations limit the amount of high frequency content in the reconstructed image, and consequently, edges are blurred. We introduce a new post-reconstruction edge enhancement algorithm, based on the reassignment principle and wavelets, that localizes its sharpening exclusively to edge features. Our method enhances edges without disturbing the low frequency textural details.

Original language	English (US)
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Publisher	Society of Photo-Optical Instrumentation Engineers
Pages	218-227
Number of pages	10
Volume	4121
State	Published - 2000
Event	Mathematical Modeling, Estimation, and Imaging - San Diego, USA Duration: Jul 31 2000 → Aug 1 2000

Other

Other	Mathematical Modeling, Estimation, and Imaging
City	San Diego, USA
Period	7/31/00 → 8/1/00

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics

Cite this

Edge localized image sharpening via reassignment with application to computed tomography. / Dorney, Timothy; Bhashyam, Srikrishna; Doran, Andrew et al.
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4121 Society of Photo-Optical Instrumentation Engineers, 2000. p. 218-227.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Dorney, T, Bhashyam, S, Doran, A, Choi, H, Flandrin, P & Baraniuk, R 2000, Edge localized image sharpening via reassignment with application to computed tomography. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 4121, Society of Photo-Optical Instrumentation Engineers, pp. 218-227, Mathematical Modeling, Estimation, and Imaging, San Diego, USA, 7/31/00.

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AU - Baraniuk, Richard

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BT - Proceedings of SPIE - The International Society for Optical Engineering

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T2 - Mathematical Modeling, Estimation, and Imaging

Y2 - 31 July 2000 through 1 August 2000

ER -

Edge localized image sharpening via reassignment with application to computed tomography

Abstract

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ASJC Scopus subject areas

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