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MosaizerProTutorialThephotomosaicpicture
Hereyoulearnhowtomakeaphotomosaicpicture.Wewillshowyouhowthebasiccontrolsareeffectivelyappliedtocreate,tuneandvarythefinalresult.Wedemonstratetheuseofthepreviewwindow,theinfotabandthehistorymonitor.
HowtomakeaphotomosaicpictureAboutphotomosaicsAphotomosaicisapicturethatisbuildfromthousandsofsmallsubpictures.Fromcloserangeeachofthesubpicturesisrecognized,fromashortdistancetheoverallpicturebecomesclear.Fromalongdistancetheindividualpicturesarehardlyrecognizedanditseemsthatwearesimplylookingataphotograph.Thetechniqueofphotomosaicsisold(1993)butwithincreasingcomputerpowermanysoftwareprogramshavebeendevelopedtocreatebeautifulmosaiceffects.TechniqueofphotomosaicsTomakeaphotomosaicfollowsarelativelysimpleapproach:theoriginal(source)pictureisdecomposedinsmallerportions(called‘cells’or‘tiles’),ofwhicheachoftheseportionstheaveragecolor(impression)isdetermined.Next,alargenumberofpicturesisanalyzedforitscolorcharacteristicsandstoredinacolordatabase.Finally,foreachtileapictureissubstitutedthatmatchestheoriginalcolorimpressionthebest.Tileaftertileisanalyzedandsubstitutedwiththebestpicturereplacement,thusbuildingthephotomosaicpicture.Photomosaicsareusuallyverylargebitmapsbecauseeachtile/subpicturemustremainrecognizable,andasourcepictureusuallyconsistsofseveralhundredsofpixelsinwidthandheight.Thiswaythousandsoftilesarerequiredtorebuildthesourcepictureintoaphotomosaic.ThestepstomakeasimplephotomosaicStep1:selectasourcepictureTherearetwowaystoselectasourcepicture:openanexistingpictureoraddanewpicture.AfterMosaizerProisinstalledalreadyafewpicturesareavailable.Here,weselectthePinkCarPicture(shotinWarsaw,Poland).Information:thesourcepicturecanbeoftypejpg,bmp,gif,png,wmf,emfandico.Step2:selectalibrarySimilartoselectingasourcepicture,alibraryneedstobeselected.AfterinstallationMosaizerProhasnotyetanactivelibrary.Thisneedstobedonepriortocreatinganyphotomosaic.
Weselectedthelibrary‘Animals1279’,with1279(small)pictures.Tostart,wehaveafewpicturelibrariesavailablefordownloadfromourwebsite.
Afterloadingthelibrary,MosaizerProwillfirstanalyzethelibrary.Thisinformationisusefultofindtheoptimumcolormatch(seetutorialoncolormatching)anditspeedsuptheprocessofresultpreviewandthephotomosaicbuildup(alsocalled‘rendering’).Step3:createyourfirstphotomosaicWeuseallthedefaultsettingsafterloadingthepictureandlibrary.Thenpressthe‘Create’button.Atthebottomoftheapplicationtheprogresscanbeseen.Severalstepsaretakentocreatethephotomosaicpicture.
Thisistheresultofadefaultsetting:thesourcepictureisrecognized,butnotyetgoodenough.
Theresultafterloadingasourcepictureandlibrarywithonlythedefaultsettings
Step4:tuningtheresultThereareseveralwaystogofromhere:changethemosaicsize(cellsize,print/papersize,printresolution)changetheshapeofthecellsusefilters,3Deffects,masksThefirsttwooptionsareexplainedhere,thelastoptionisexplainedinanothertutorial.Changethemosaicsizeisdoneviathetab‘Sizeandshape’.Eachofthepulldownboxeshasaneffectonthenumberofcellsorcellsize(andshape).Information:thecellsizeistheonlyparametertoreallychangethevisualqualityofthetiles.Thissizeindicatesthesizeofeachsubpicture.Apictureof48x48pxiswellrecognizable,butthelargerthecellsize,thelesscellsamosaicwillbebuiltfrom(thusmorecellsarerequired).Weshowyouthreedifferentchangesthatwemadetoexplainhowtotunethesize.
Lefttoright:48x48cellsize+A1papersize+200dpiresolution.
Changetheshapeofthecellsisdonebychangingthegridshape.Thephotomosaichas6differentgridshapes:square,rectangle,mosaic,fence,brickandportrait.Hereweshowthreevariationsoftheseshapes.Othershapesarecircular:spiral,circle,multishapes.Information:thepreviewwindowisaverypracticaltooltoquicklyassesstheeffectofachange.Intheexamplesbelowwehaveusedthispreviewwindowtodemonstratetheeffectofagridshapechange.
Topleft:square(default)Topright:fence(rectangularsize)Bottomleft:mosaic(squaresize)Bottomright:brick(rectangularsize)TheinformationboxesWhenyoucreateandtunethephotomosaicpicture,itisveryhelpfultoseetheeffectonfinalsize(inMb)andexpectedrenderingtime(leftpicture).Allstepsthataretakenarealsomonitoredandsaved(rightpicture).Whenyouwanttorecreatetheresultoncemoreoryouwanttotracethestepsyou’vetaken,thismonitorcanbeveryhelpful.Thislogisalwayssavedinthe‘/Results’directory.Alternativelyyoucansavethesettingsasapresetfile.MosaizerPro©APPHelmondJanuary2009www.mosaizer.com