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8. User Supportware

❻ Projecting an Image from an Angle (Geometric Correction

Tool in Image Express Utility Lite) (MM Models)



TheGeometric CorrectionTool(GCT)functionallowsyoutocorrectdistortionofimagesprojectedevenfrom an

angle.

What you can do with GCT

• TheGCTfeatureincludesthefollowingthreefunctions

• 4-point Correction:Youcantaprojectedimagewithintheborderofthescreeneasilybyalignthefourcorners

ofanimagetotheonesofthescreen.

• Multi-point Correction:Youcancorrectadistortedimageonthecornerofawallorirregularshapedscreen

byusingmanyseparatedscreenstocorrecttheimageaswellas4-pointCorrection.

• Parameters Correction:Youcancorrectadistortedimagebyusingacombinationoftransformationalrules

preparedinadvance.

Thissectionwillshowanexampleforusewith4-pointCorrection.

Forinformationabout“Multi-pointCorrection”and“ParametersCorrection”,seethehelpleofImageExpress

UtilityLite.(→page200)

• Yourcorrectiondatacanbestoredintheprojectororyourcomputerwhichcanberestoredwhennecessary.

• TheGCTfunctionisavailablewithawiredorwirelessLANconnection,andvideocable.

Projecting an Image from an Angle (GCT)

• ForavideocableorLANconnection,installandstartImageExpressUtilityLiteinyourcomputerbeforehand.(→

page198)

Preparation:Adjusttheprojectorpositionorthezoomsothattheprojectedimagecancoverthewholescreenarea.

1. Clickthe“ ”(Picture)iconandthenthe“ ”button.

 The“4-pointCorrection”windowwillbedisplayed.

2. Clickthe“StartCorrection”buttonandthen“Start4-pointCorrection”button.

 Agreenframeandamousepointer( )willbedisplayed.

• Four[•]markswillbeappearedatfourcornersofthegreenframe

NEC PA721X User Manual

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