iZoomABetterWaytoViewLargeDataSets.ppt

iZoom:ABetterWaytoViewLargeDataSets?MikeAshmoreCPSC462Problem:-proneeyetrackerdatais~1˚uracyonagoodcalibrationUpto30-40pixelserroronahigh-resolutiondisplayHighjitterofdatajustmakesreliableselectionthatmuchharderProblem:-:6-8pixelsMicrosoftWordrulerbar(tabs,etc.):2pixelsImageeditingapplications/WYSIWYGprintlayouttools:1pixelButthey’vebeenofferingamagnifiertoolforagesnow!Perhapsthere’salessontobelearned…Solution#1:Makeeverythingbiggersoit’seasiertoselect(theDUPLOapproach)Sinceitworkssowellforimageeditors,we’:Faster,lessfatiguingselectionofUIelements(’Law)Lossage:Amountofinformationavailabledecreasesinproportiontothesquareofthemagnification(2xmagnification=1/4asmuchinformation)Solution#2:LetthedisplayslidearoundonavirtualdesktopBigwins::,2xmagnificationofthevirtualdesktopleaves3/4ofthedesktopnon-:Gaze-ContingentFisheyeDisplaysBigwin:Aportionofthescreenismagnified,!PossibleProblem:Canpeopleuseitwithoutgettingmotionsickness?OtherPossibleProblem:Curiously,’tworkedforanybodyelse,:lookatthewindowwiththe“X”Threeconditions:Non-fisheye(thecontrolcondition)NaïvefisheyeAlways-onversionoflens“Smart”fisheyeLensonlyappearsafterdetectingacertain“intentness”offixationChallengesBadCalibration=FrustratedtestsubjectABug!?Solution:MoresophisticatedcalibrationroutineDon’ttakecalibrationsamplesuntilwe’