1998-Review article Multisensor image fusion in remote sensi

国际遥感杂志文献

This article was downloaded by:

On: 10 September 2010

Access details: Access Details: Free Access

Publisher Taylor & Francis

Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37-

41 Mortimer Street, London W1T 3JH, UK

International Journal of Remote SensingPublication details, including instructions for authors and subscription information:

http://www.77cn.com.cn/smpp/title~content=t713722504

Review article Multisensor image fusion in remote sensing: concepts,

methods and applicationsC. Pohl; J. L. Van Genderen

To cite this Article Pohl, C. and Van Genderen, J. L.(1998) 'Review article Multisensor image fusion in remote sensing:concepts, methods and applications', International Journal of Remote Sensing, 19: 5, 823 — 854

To link to this Article: DOI: 10.1080/014311698215748

URL: http://www.77cn.com.cn/10.1080/014311698215748

PLEASE SCROLL DOWN FOR ARTICLE

Full terms and conditions of use: http://www.77cn.com.cn/terms-and-conditions-of-access.pdfThis article may be used for research, teaching and private study purposes. Any substantial orsystematic reproduction, re-distribution, re-selling, loan or sub-licensing, systematic supply ordistribution in any form to anyone is expressly forbidden.

The publisher does not give any warranty express or implied or make any representation that the contentswill be complete or accurate or up to date. The accuracy of any instructions, formulae and drug dosesshould be independently verified with primary sources. The publisher shall not be liable for any loss,actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directlyor indirectly in connection with or arising out of the use of this material.

国际遥感杂志文献

int.j.remotesensing,1998,vol.19,no.5,823±854

Reviewarticle

Multisensorimagefusioninremotesensing:concepts,methods

andapplications

C.POHL

WesternEuropeanUnion±SatelliteCentre(WEUSC),ResearchDivision,P.O.Box511,28850TorrejondeArdoz(Madrid),Spain

andJ.L.VANGENDEREN

InternationalInstituteforAerospaceSurveyandEarthSciences(ITC),P.O.Box6,7500AAEnschede,TheNetherlands

(Received5May1996;innalform30May1997)

Downloaded At: 03:42 10 September 2010Withtheavailabilityofmultisensor,multitemporal,multiresolutionandmultifrequencyimagedatafromoperationalEarthobservationsatellitesthefusionofdigitalimagedatahasbecomeavaluabletoolinremotesensingimageevaluation.Digitalimagefusionisarelativelynewresearcheldattheleadingedgeofavailabletechnology.Itformsarapidlydevelopingareaofresearchinremotesensing.ThisreviewpaperdescribesandexplainsmainlypixelbasedimagefusionofEarthobservationsatellitedataasacontributiontomultisensorintegrationorienteddataprocessing.Abstract.1.IntroductionEarthobservationsatellitesprovidedatacoveringdi erentportionsoftheelectro-magneticspectrumatdi erentspatial,temporalandspectralresolutions.Forthe

fullexploitationofincreasinglysophisticatedmultisourcedata,advancedanalyticalornumericaldatafusiontechniquesarebeingdeveloped(Shen1990).Fusedimagesmayprovideincreasedinterpretationcapabilitiesandmorereliableresultssincedatawithdi erentcharacteristicsarecombined.Theimagesvaryinspectral,spatialandtemporalresolutionandthereforegiveamorecompleteviewoftheobservedobjects.

Itistheaimofimagefusiontointegratedi erentdatainordertoobtainmoreinformationthancanbederivedfromeachofthesinglesensordataalone(`1+1=3’).Agoodexampleisthefusionofimagesacquiredbysensorssensitivetovisible/infrared(VIR)withdatafromactivesyntheticapertureradar(SAR).TheinformationcontainedinVIRimagerydependsonthemultispectralre¯ectivityofthetargetilluminatedbysunlight.SARimageintensitiesdependonthecharac-teristicsoftheilluminatedsurfacetargetaswellasonthesignalitself.Thefusionofthesedisparatedatacontributetotheunderstandingoftheobjectsobserved.

Imagefusionhasmanyaspectstobelookedat.Beforebeingabletoimplementanduseanimagefusionapproachsomeofitsquestionsthatneedtobeansweredbytheuserinclude:

Whatistheobjective/applicationoftheuser?

Whichtypesofdataarethemostusefulformeetingtheseneeds?

0143±1161/98$12.001998Taylor&FrancisLtd

国际遥感杂志文献

824C.PohlandJ.L.vanGenderen

Whichisthe`best’techniqueoffusingthesedatatypesforthatparticularapplication?

Whatarethenecessarypre-processingstepsinvolved?

Whichcombinationofthedataisthemostsuccessful?

Theseandotherquestionscomprisealargenumberofparameterstobeconsidered.Themostimportantquestiontobeansweredrstis:Whatistheappli-cationthedataisneededfor?Knowingthatitispossibletode®nethenecessaryspectralandspatialresolutionwhichagainhasanimpactontheselectionoftheremotesensingdata.Theselectionofthesensordependsonsatelliteandsensorcharacteristicssuchas

orbit;

platform;

imaginggeometryofopticalandradarsatellites;

spectral,spatialandtemporalresolution(PohlandGenderen1993).

Downloaded At: 03:42 10 September 2010Theavailabilityofspeci®cdataplaysanimportantroletoo.Itdependsonthesatellitecoverage,operationalaspectsofthespaceagencyrunningthesatellite,atmosphericconstraintssuchascloudcover,nancialissues,etc.(Pohl1996).Thenextstepisthechoiceofasuitablefusionlevel.Thepre-processingstepsaredependingonthis.Incaseofpixelbasedimagefusionthegeocodingisofvitalimportance.Relatedtothegeometriccorrectionofthedata,detailssuchasthegeometricmodelgroundcontrolpoints(number,distribution,accuracy)digitalelevationmodelresamplingmethodetc.needfurtherconsideration.Thequestionofwhichtechniquetochooseisverycloselyrelatedtothede®nitionofevaluationcriteria.Botheldsareratherdi culttode®neanddependverymuch

onempiricalresults(furtherconsiderationsonthistopicarereviewedin§4and§6.2).

Theapplicationalsode® …… 此处隐藏：37547字，全部文档内容请下载后查看。喜欢就下载吧 ……