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OCRPreferences
TheI.R.I.S.OCRpluginfullyintegrateswithNitroPro9allowingittorecognizetextfromscannedpages,
orfromimagesinopenPDFdocuments.TheOCRutilityisfullycustomizable,withoptionstoconfigure
optionssuchasskewedimagecorrection,toimagecompressionsettings.Youcanalsoenabletext
recognitionforscannersdirectlyontheCreatePDFFromScannerdialog,toautomaticallycreatePDF
documentsfromscannedpageswithtextthatcanbemodifiedorsearched.
ToconfigureOCRpreferences:
1. ClicktheFilemenubuttoninthetop-leftcorneroftheapplication
2. ClickonthePreferencesbuttonatthebottomofthemainmenu
3. InthePreferencesdialog,clickonOCRinthecategoriescolumn
OCRGeneralPreferences
ThegeneralpreferencestoconfiguretheOCRfunctionalityaresplitinto3categories,withthefollowing
options:
l
Correctimageskew:Straightenanytextwhichisskewedonthescanneddocument
l
Usefixedthreshold:Thresholdingistheprocessofanalyzingthehistogramofanimageto
distinguishthetextfromthebackground.Afixedthresholdappliesthesamecut-offpointtothe
entireimage,asopposedtofindingthetextdynamically.Thepercentagevaluesindicatethepoint
atwhichthecontrastbetweenblacksandwhitesisidealtorecognizetext,with0%being
completelydarkand100%beingcompletelywhite.Thissettingisrecommendedifanimage
containsdifferentbackgroundcolors,orabackgroundwhichvariesinshadingorgradient.For
morecommonOCRoperations,itisrecommendedtodisablethefixedthresholdsetting
l
Detecttextorientation:Rotatepagesautomaticallywhentheyhavebeenscannedat90,180,or
270degreeangles
l
Smoothcolorimage:FlattenoutthecolorsoftheimagetoremovetheJPEGcompressionartifacts
andhelprecognition
l
Language:Selectthelanguageofthescannedtextyouwanttodetect
l
Quality:
l
Low(fast):Ideallyusedwhenthetextonthescanneddocumentisverycrispandeasyto
recognize.Thissettingallowsscanstobeperformedquickly
l
Medium(medium):RecognitionismoreprecisethantheLowsetting,requiringthescanto
takeslightlylonger
l
High(slow):Recommendedforscanningtextwhichishardertorecognize.Scantimewith
thissettingisnoticeablylongersincetherecognitionmethodsaremorecomplex
l
Downsampleimages:Afterthescaniscomplete,youareabletoreducetheresolutionofyour
scannedimagestolowerthesizeoftheresultantPDFdocument
l
Imagecompressionfactor:Themoreanimageiscompressed,thesmallerthefilesizeofthe
outputPDF.However,ifyourPDFdocumentisintendedforprint,lowcompressionis
recommendedtopreservequality
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UseascannertoOCRaprinteddocument
ToscanandOCRaphysicaldocument:
1. OntheHometab,intheCreategroup,clickthePDFbutton,thenFromScanner
2. IntheScanSettingsdialog,selectyourscannerdevice
3. Selectthesheetstobescaned,andthenspecifythefile'sdestination
4. IntheImagecompressionsection,configurethepreferencesforthedocument'simages:
l
Color/Grayscale
l
JPEG:ThemainJointPhotographicExpertsGroupstandardachieves10:1
compressionratioswithlittleperceptiblequalityloss
l
JPEG2000:AchieveshighercompressionratiosthanJPEG,andusesbothlossyand
losslesscompressioninthesamefilestream
l
ZIP:UsestheZIPcompressionalgorithmtoreducetheimagesizewithoutaffecting
quality
l
Monochrome
l
CCITTGroup4:Afaxdocumenttransmissionstandardwhichusesadvanced
compressionmethodsforlosslessreproduction
l
CCITTGroup3:TheGroup3standardachieveslesscompression,andisless
advancedthantheCCITTGroup4method
l
RunLength:Particularlyeffectiveonfilesthatcontainmanylongrunsofthesame
bit,value,orcharacter.Thismethodisprimarilyusedonbinaryfiles
l
ZIP:UsestheZIPcompressionalgorithmtoreducetheimagesizewithoutaffecting
quality
l
Quality
l
150DPI:Mightbesuitableforuseonthewebduetothesmallerfilesizeproduced,
howeverwillnotproducehighqualityprints
l
200DPI:Suitableforhigherqualityviewingoncomputermonitors
l
300DPI:Thestandardgenerallyusedforofficequalityprints,andgeneratesslightly
largerfilesizes
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600DPI:Generateslargefilesizes,howeveritisrecommendedforhighprintquality
oftheimage
5. CheckMakedocumentsearchabletoenabletheOCRplugin,andclicktheAdvancedbuttonto
setyourpreferences
6. ClickScantolaunchyourdefaultscanningsoftware
7. ClickScantobeginthescanningprocess(somescannerdriversrequireyoutoClosethedialog
oncethescaniscomplete)
8. ClickFinishoptiontoendyourscanningjob,orselecttheScanfrontofsheettwotocontinue
scanning
9. Ifyouscannedmultiplepages,clickingFinishwillopenthescanneddocumentinNitroPro9
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OCRanexistingPDF
ToOCRadocument:
1. InNitroPro9,openaPDFdocumentyouwanttoOCR
2. OntheEdittab,clicktheOCRbuttonintheText/Imagespanel
3. IntheOpticalCharacterRecognition(OCR)dialog,choosewhethertheoutputtextshouldbe
SearchableorSearchableandEditable
4. ClicktheOptionsbuttontoselectatargetpagerange,andclickAdvancedtoconfigureOCR
preferences
5. ClickOKtorecognizethedocument'stext
ToOCRselectivepagesinadocument:
1. Fromthenavigationtabs(displayedalongtheleftsideoftheNitroPro9window),clickthePages
tab
2. Right-clickontherequiredpagesinthePagespaneandselectOCRPages...(holddownControl
toselectmany)
3. IntheOpticalCharacterRecognition(OCR)dialog,choosewhethertheoutputtextshouldbe
SearchableorSearchableandEditable
4. ClicktheOptionsbuttontoselectatargetpagerange,andclickAdvancedtoconfigureOCR
preferences
5. ClickOKtorecognizethedocument'stext
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TroubleshootOCR
TheresultsofOpticalCharacterRecognition(OCR)aresomewhatdependentonthequalityofthe
electronicdocument,soherearesometipstohelpyouimproveOCRresults:
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SetthescannercolorsettingstoGrayscale,orBlackandWhiteifthetextisblackagainstawhite
background
l
Ifsupportedbyyourscanner,adjustbrightnessandcontrasttoachievedeepblacksandbright
whites
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Setthescanquality(resolution)to300dpiorbetter
l
Startwithagoodoriginaldocument.WrinklesandcreasesmighthinderOCRaccuracy
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Ensurescannerglassiscleanandfreefromsmudges
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Keepyourpagesasstraightaspossibleduringscanning.Skewedpagesrequiremoreprocessing
intheOCRengine
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Dependingonthequalityofyourscanner,youmightneedtoattemptseveralscansofthesame
documenttoprocessthebestresultingimage
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Ifyourtextisonapatternedorcoloredbackground,trytoobtainanotherversiononaplainwhite
background.Textagainstcoloredbackgroundsorgradientswillrequireseveralattemptswithdif-
ferentsettingsuntiltherightconfigurationforsuccessfulOCRisfound
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Somesmudgescanbemanuallyrepairedbyusingwhitecorrectionfluidtocoverunwantedarti-
facts
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Ifsupportedbyyourscanner,enablethedespecklesettingtoremovenoisefromyourimage
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Ifsupportedbyyourscanner,increasetextsmoothingtoremoveharshblendsandgrain
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Reviewandcomment
TheNitroPro9textmark-uptoolsletyouworkwithaPDFfileasifitwereaprintedonpaper,andyoucan
undoandredoamodificationshouldyouwishtocorrectamistake.
Anannotationcommentisanon-destructiveelement,whichisaddedasanextralayeroverthepageof
yourPDF,andcanberemovedatanytime.Ifyouwantcommentstoappearwhenyouprintyour
document,youhavetospecificallyenableannotationsinyourprintsettings.
Youcanaddcommentstopagesasstickynotes,texthighlighting,drawingmarkups,stamps,andfile
attachments.
Mosttypesofcommentsincludeapop-upnote,enablingyoutoaddadditionalfeedback.Forexample,if
you’vemarkedsometextwiththeHighlightTexttool,youcanopenthecorrespondingpop-upnoteand
typeanexplanationtoclarifywhyyou’vehighlightedit.YoucanalsousetheCommentspanetoview,
manageandorganizecommentsfromothers.
AllcommentinganddrawingtoolsareaccessiblefromtheReviewtab.
FormoreinformationaboutcommentsandannotationsinPDFfiles,see:
l
Add
or
edit
notes
l
Annotate
with
text
mark-
up
tools
l
Annotation
layer
and
content
layer
l
Attach
files
as
annotations
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CollaborateonlinewithNitroCloud
SharingdigitaldocumentsforcollaborationwasadecisivefactorinthecreationofthePDFdocument
standard.Whetheryouneedtofilloutandsignaform,orreviewandannotateadocument,NitroCloud
bringsreal-timecloudcollaborationtoNitroPro9,andenablesmultiplecontributorstoworkonthe
samedocumentatthesametime.
NOTE:AnInternetconnectionisrequiredtocreateaNitroCloudaccountandsharePDFfiles.
GettingstartedwithNitroCloud
Createanaccount:
ANitroCloudaccountisrequiredtostoreyourPDFfilesandtrackcollaborationprivatelyandsecurely.
YoucancreateaNitroCloudaccountdirectlythroughNitroPro9.
1. ClicktheNitroCloudmenuinthetoprighthandcornerofNitroPro9,andthenclickSignUp
2. IntheSignUpdialog,enteryourfullnameandemailaddressandclicktheSignUpbutton
3. LogintoyouremailaccountandconfirmyouraddressbyclickingthelinkintheemailfromNitro
Cloud.Ifyoudidnotreceivetheemail,checkyourspamfolderorclicktheResendConfirmation
EmailbuttonintheNitroPro9dialog
4. TheconfirmationlinkwillloadNitroCloudinyourwebbrowser.Setyourpreferredpasswordand
modifyyournameandtimezonesettingsasrequired.
5. ClickStartusingyourNitroCloudaccount
6. InNitroPro9,clickContinuetolinkyourNitroCloudaccount
7. YoucannowclickUploadtosaveyourfirstPDFfiletoyourNitroCloudaccount
SharePDFfiles
SharePDFfilesusingNitroCloudtocollaborateinreal-timeoveradocumentreview,andenableothersto
signyourdocumentwithoutthetraditionalhasslesofprinters,pens,orunnecessaryemails.
TorequestaSignature:
1. OpenaPDFfileinNitroPro9
2. IntheCloudtab,ontheWorkflowpanel,clickRequestSignature
3. LogintoyourNitroCloud,andthenclickUpload
4. Whenthefilehasfinisheduploading,clickContinuetoNitroCloud
5. NitroCloudwilllaunchinyourdefaultwebbrowser.Followthepromptstoprepareyourdoc-
umentandshareitforsigning.
ToShareaPDFFile:
1. OpenaPDFfileinNitroPro9
2. IntheCloudtab,ontheWorkflowpanel,clickShare
3. LogintoyourNitroCloud,andthenclickUpload
4. Whenthefilehasfinisheduploading,clickContinuetoNitroCloud
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5. NitroCloudwilllaunchinyourdefaultwebbrowser.Followthepromptstoconfiguretherequired
methodforsharingthedocument.
ToCollaborateoveraPDFFile:
1. OpenaPDFfileinNitroPro9
2. IntheCloudtab,ontheWorkflowpanel,clickCollaborate
3. LogintoyourNitroCloud,andthenclickUpload
4. Whenthefilehasfinisheduploading,clickContinuetoNitroCloud
5. NitroCloudwilllaunchinyourdefaultwebbrowser.Followthepromptstodesignatethecol-
laboratorswhowillbeabletoreviewandannotatethePDFfile.
ManageyourNitroCloudaccount
Toviewyourdocuments:
1. ClicktheNitroCloudmenuinthetoprighthandcornerofNitroPro9,andthenclickLogin
2. IntheCloudtab,ontheAccountpanel,clickDocuments
3. NitroCloudwilllaunchinyourdefaultwebbrowserandshowalistofthedocumentsthatyoucan
share,edit,convert,andmore.
Tomanageyouraccount:
1. ClicktheNitroCloudmenuinthetoprighthandcornerofNitroPro9,andthenclickLogin
2. IntheCloudtab,ontheAccountpanel,clickManageAccount
3. NitroCloudwilllaunchtheaccountmanagementpageinyourdefaultwebbrowser,whereyoucan
setyouraccountdetails,changeyourpassword,manageyoursignaturesandnotifications,or
upgradeyouraccount.
Toupgradeyouraccount:
1. ClicktheNitroCloudmenuinthetoprighthandcornerofNitroPro9,andthenclickLogin
2. IntheCloudtab,ontheAccountpanel,clickUpgrade
3. NitroCloudwilllaunchthePlanDetailspageinyourdefaultwebbrowser,whereyoucanviewyour
currentplanandupgradeaccordingly.
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Addoreditnotes
Justasyouwouldwithapaperdocument,youcanplacenotesandwriteannotationsanywhereinaPDF
file.Notesletyoudirecttheattentionofreaderstoaspecificareaofthepage,andtoincludespecial
instructionsforapersonreviewingthedocument.
Toaddanote:
1. IntheReviewtab,intheCommentpanel,clickAddNote
2. Clickonthepagewhereyouwishtoplacethenote,andayellowspeech-bubbleappears
3. Thenewnoteautomaticallyopensapop-upnote.Clickinsidethepop-upnotetoenteryourtext.
4. Tofinishaddingyourtext,clickanywhereoutsidetheannotation
5. Double-clickontheyellowspeech-bubbletoshoworhidethepop-upnote
NOTE:Youcanclickanddragtheyellowspeech-bubbletomoveitanywhereonthepageofyourdoc-
ument.
Toeditnoteproperties:
1. Right-clickthenoteoritsicon
2. Fromthemenu,selectProperties
3. OntheGeneraltab,youcanedittheAuthorandSubjectdetailsforthenote
4. OntheAppearancetab,youcaneditthevisualcharacteristicsofthenote
5. ClickClosetosaveyourchanges
Defaultnoteproperties
TomakeallyourfutureNotestolookthesameastheselectednote:
1. Right-clickthenoteoritsicon
2. SelectMakeCurrentPropertiesDefault
TIP:Notesresideontheannotationlayer.Theydonotappearinsearchresults,andarenotprinted
withthedocumentunlessyouspecifythatyouwanttoprintwithmarkup.Formoreinformation,see
Annotation
layer
and
content
layer
.
Toreplytoanote:
1. Ifthetextforthenoteishidden,double-clickonthespeechbubbletomakethepop-upnote
appear
2. Onthepop-upnote,clicktheOptionsmenu,thenselectReplyfromthemenu
3. Apop-upnoteofadifferentcolorappearsinsidetheoriginalone.Writeyourreplyinthenewpop-
upnote.
4. Tofinishaddingyourtext,clickanywhereoutsidetheannotation
TIP:Youcaninsertmorethanonereply,whichallowsyoutobuildamessagethreadinthesame
annotation.
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Todeleteanote:
1. Right-clickonthespeechbubbletobringupthecontextmenu
2. Inthemenu,selectDelete
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