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Conference Paper: Preconditioned iterative methods for high-resolution image reconstruction with multisensors
Title | Preconditioned iterative methods for high-resolution image reconstruction with multisensors |
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Authors | |
Keywords | Block-Toeplitz-Toeplitz-block-like matrix Preconditioned conjugate gradient Cosine transform preconditioner Regularization High-resolution image reconstruction |
Issue Date | 1998 |
Publisher | S P I E - International Society for Optical Engineering. The Journal's web site is located at http://www.spie.org/app/Publications/index.cfm?fuseaction=proceedings |
Citation | Advanced Signal Processing Algorithms, Architectures, and Implementations VIII, San Diego, California, USA, 22-24 July 1998. In Proceedings of SPIE, 1998, v. 3461, p. 348-357 How to Cite? |
Abstract | We study the problem of reconstructing a high-resolution image from multiple undersampled, shifted, degraded frames with subpixel displacement errors. The corresponding reconstruction operators H is a spatially variant operator. In this paper, instead of using the usual zero boundary condition, the Neumann boundary condition is imposed on the images. The resulting discretization matrix of H is a block-Toeplitz-Toeplitz-block-like matrix. We apply the preconditioned conjugate gradient (PCG) method with cosine transform preconditioner to solve the discrete problems. Preliminary results how that the image model under the Neumann boundary condition gives better reconstructed high-resolution images than that under the zero boundary condition, and the PCG method converges very fast. |
Persistent Identifier | http://hdl.handle.net/10722/46602 |
ISSN | 2023 SCImago Journal Rankings: 0.152 |
DC Field | Value | Language |
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dc.contributor.author | Chan, RH | en_HK |
dc.contributor.author | Chan, TF | en_HK |
dc.contributor.author | Ng, MK | en_HK |
dc.contributor.author | Tang, WC | en_HK |
dc.contributor.author | Wong, CKT | en_HK |
dc.date.accessioned | 2007-10-30T06:53:57Z | - |
dc.date.available | 2007-10-30T06:53:57Z | - |
dc.date.issued | 1998 | en_HK |
dc.identifier.citation | Advanced Signal Processing Algorithms, Architectures, and Implementations VIII, San Diego, California, USA, 22-24 July 1998. In Proceedings of SPIE, 1998, v. 3461, p. 348-357 | - |
dc.identifier.issn | 0277-786X | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/46602 | - |
dc.description.abstract | We study the problem of reconstructing a high-resolution image from multiple undersampled, shifted, degraded frames with subpixel displacement errors. The corresponding reconstruction operators H is a spatially variant operator. In this paper, instead of using the usual zero boundary condition, the Neumann boundary condition is imposed on the images. The resulting discretization matrix of H is a block-Toeplitz-Toeplitz-block-like matrix. We apply the preconditioned conjugate gradient (PCG) method with cosine transform preconditioner to solve the discrete problems. Preliminary results how that the image model under the Neumann boundary condition gives better reconstructed high-resolution images than that under the zero boundary condition, and the PCG method converges very fast. | en_HK |
dc.format.extent | 2284990 bytes | - |
dc.format.extent | 2007 bytes | - |
dc.format.extent | 4654 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.format.mimetype | text/plain | - |
dc.format.mimetype | text/plain | - |
dc.language | eng | en_HK |
dc.publisher | S P I E - International Society for Optical Engineering. The Journal's web site is located at http://www.spie.org/app/Publications/index.cfm?fuseaction=proceedings | en_HK |
dc.relation.ispartof | Proceedings of SPIE | - |
dc.rights | Copyright 1998 Society of Photo‑Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited. This article is available online at https://doi.org/10.1117/12.325695 | - |
dc.subject | Block-Toeplitz-Toeplitz-block-like matrix | en_HK |
dc.subject | Preconditioned conjugate gradient | en_HK |
dc.subject | Cosine transform preconditioner | en_HK |
dc.subject | Regularization | en_HK |
dc.subject | High-resolution image reconstruction | en_HK |
dc.title | Preconditioned iterative methods for high-resolution image reconstruction with multisensors | en_HK |
dc.type | Conference_Paper | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0277-786X&volume=3461&spage=348&epage=357&date=1998&atitle=Preconditioned+iterative+methods+for+high-resolution+image+reconstruction+with+multisensors | en_HK |
dc.description.nature | published_or_final_version | en_HK |
dc.identifier.doi | 10.1117/12.325695 | en_HK |
dc.identifier.scopus | eid_2-s2.0-0032225053 | - |
dc.identifier.hkuros | 46939 | - |
dc.identifier.issnl | 0277-786X | - |