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MULTIRESOLUTION IMAGE FUSION: PHASE CONGRUENCY FOR SPATIAL CONSISTENCY ASSESSMENT

Makarau, Aliaksei and Palubinskas, Gintautas and Reinartz, Peter (2010) MULTIRESOLUTION IMAGE FUSION: PHASE CONGRUENCY FOR SPATIAL CONSISTENCY ASSESSMENT. Buchdruckerei Ernst Becvar Ges.mbH, Vienna, Austria. ISPRS Technical Commision VII Symposium - 100 Years ISPRS, 5.-7. Jul. 2010, Vienna, Austria. ISSN 1682-1777

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Abstract

Multiresolution and multispectral image fusion (pan-sharpening) requires proper assessment of spectral consistency but also spatial consistency. Many fusion methods resulting in perfect spectral consistency may leak spatial consistency and vice versa, therefore a proper assessment of both spectral and spatial consistency is required. Up to now, only a few approaches were proposed for spatial consistency assessment using edge map comparison, calculated by gradient-like methods (Sobel or Laplace operators). Since image fusion may change intensity and contrast of the objects in the fused image, gradient methods may give disagreeing edge maps of the fused and reference (panchromatic) image. Unfortunately, this may lead to wrong conclusions on spatial consistency. In this paper we propose to use phase congruency for spatial consistency assessment. This measure is invariant to intensity and contrast change and allows to assess spatial consistency of fused image in multiscale way. Several assessment tests on IKONOS data allowed to compare known assessment measures and the measure based on phase congruency. It is shown that phase congruency measure has common trend with other widely used assessment measures and allows to obtain confident assessment of spatial consistency.

Item URL in elib:https://elib.dlr.de/64711/
Document Type:Conference or Workshop Item (Poster)
Title:MULTIRESOLUTION IMAGE FUSION: PHASE CONGRUENCY FOR SPATIAL CONSISTENCY ASSESSMENT
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Makarau, AliakseiAliaksei.Makarau (at) dlr.deUNSPECIFIED
Palubinskas, GintautasGintautas.Palubinskas (at) dlr.deUNSPECIFIED
Reinartz, PeterUNSPECIFIEDUNSPECIFIED
Date:2010
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:XXXVIII
Page Range:pp. 383-388
Editors:
EditorsEmail
Institute of Photogrammetry and Remote Sensing, Vienna University of TechnologyUNSPECIFIED
Publisher:Buchdruckerei Ernst Becvar Ges.mbH, Vienna, Austria
Series Name:THE INTERNATIONAL ARCHIVES OF THE PHOTOGRAMMETRY, REMOTE SENSING AND SPATIAL INFORMATION SCIENCES
ISSN:1682-1777
Status:Published
Keywords:pan-sharpening, multispectral image fusion, spatial consistency assessment, phase congruency
Event Title:ISPRS Technical Commision VII Symposium - 100 Years ISPRS
Event Location:Vienna, Austria
Event Type:international Conference
Event Dates:5.-7. Jul. 2010
Organizer:ISPRS
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Photogrammetrie und Bildanalyse (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Photogrammetry and Image Analysis
Deposited By: Palubinskas, Dr.math. Gintautas
Deposited On:15 Jul 2010 10:39
Last Modified:31 Jul 2019 19:28

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