opencv android programming by example muhammad 2016 01 06 Lập trình android

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OpenCVAndroidProgrammingBy
Example

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TableofContents
OpenCVAndroidProgrammingByExample
Credits
AbouttheAuthor
AbouttheReviewers
www.PacktPub.com
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Whysubscribe?
FreeaccessforPacktaccountholders
Preface
Whatthisbookcovers
Whatyouneedforthisbook
Whothisbookisfor
Conventions
Readerfeedback
Customersupport
Downloadingtheexamplecode
Downloadingthecolorimagesofthisbook
Errata

Piracy
Questions

1.GettingYourselfReady
InstallingTegraAndroidDevelopmentPack
DownloadingandinstallingTADP
TADPpost-installationconfiguration
Installingemulatorsystemimages
ConfiguringEclipsetoworkwithNDK
NDKverification
InstallingtheOpenCVandAndroiddevelopmentenvironmentmanually
JavaSEDevelopmentKit6
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AndroidStudio
AndroidSDK
EclipseIDE
ADTandCDTpluginsforEclipse
AndroidNDK
DownloadingAndroidNDK
InstallingandconfiguringAndroidNDK
BuildingnativecodeusingEclipse
OpenCV4AndroidSDK
UnderstandinghowNDKworks
AnoverviewofNDK
AsimpleexampleofNDK
Android.mk
BuildingyourfirstAndroidprojectwithOpenCV
HelloVisionWorldAndroidapplication
CreatingaprojectinEclipse

CreatingaprojectinAndroidStudio
Summary
2.App1-BuildingYourOwnDarkroom
Digitalimages
Colorspaces
TheMatclass
BasicMatoperations
Processingtheimagesstoredonyourphone
LoadinganimagetoaMatobject
UIdefinitions
ReadinganimageusingOpenCV
Calculatinganimagehistogram
Whatarehistograms?
Understandinghistogramcomponents
UIdefinitions

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Calculatinganimagehistogram
Enhancingtheimagecontrast
Understandinghistogramequalization
Enhancinggrayscaleimages
UIdefinitions
Convertinganimagetograyscale
Equalizingahistogramforagrayscaleimage
EnhancinganHSVimage
UIdefinitions
Equalizingahistogramfortheimagesaturationandvalue
EnhancinganRGBimage

UIdefinitions
Equalizingahistogramfortheimagecolorchannels
Summary
3.App2-SoftwareScanner
Spatialfiltering
Understandingconvolutionandlinearfiltering
Removingnoise
Theaveragingfilter
TheGaussianfilter
Themedianfilter
UIdefinitions
Applyingfilterstoreduceimagenoise
Findingedges
TheSobeledgedetector
TheCannyedgedetector
UIdefinitions
ApplyingtheSobelfiltertofindedges
UsingtheCannyedgedetector
Detectingshapes
UnderstandingtheHoughlinetransform

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DetectinglinesusingHoughtransform
UIdefinitions
Detectinganddrawinglines
DetectingcirclesusingHoughtransform
UIdefinitions
Detectinganddrawingcircles

Summary
4.App2-ApplyingPerspectiveCorrection
Imagetransformationsandperspectivecorrection
Translation
Rotationandtranslation
Scaledrotation
Affine
Perspectivetransformation
Rigidperspectivecorrection
UIdefinitions
Estimatingtheperspectivetransformationusingtheobjectboundingbox
Flexibleperspectivecorrection
UIdefinitions
Applyingflexibleperspectivecorrection
Manualperspectivecorrection
UIdefinitions
Selectingthecornersmanually
Summary
5.App3-PanoramicViewer
Imagefeatures
Featuredetectors
UnderstandingtheHarriscornerdetector
UIdefinitions
UsingtheHarriscornerdetector
CallinganativeHarriscornerdetector

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UsingthenativeOpenCVlibrarywithinEclipse

UsingthenativeOpenCVlibrarywithinAndroidStudio
Workingonthenativepart
UnderstandingtheFASTcornerdetector
UIdefinitions
UsingtheFASTcornerdetector
UsingnativeFAST
UnderstandingtheORBfeaturedetector
UIdefinitions
UsingtheORBfeaturedetector
UsingnativeORB
Featuredescriptionandmatching
UnderstandingBRIEFandORBfeaturedescriptors
UnderstandingtheBRISKfeaturedescriptor
UnderstandingtheFREAKfeaturedescriptor
Matchingthefeatures
Workingwithfeaturematching
UIdefinitions
Findinganobjectinascene
Nativefeaturematching
UIdefinitions
Thenativematchingprocess
Stitchingtwoimages
UIdefinitions
Thenativestitcher
Summary
6.App4–AutomaticSelfie
Cascadeclassifiers
Haar-likefeatures
Theintegralimage
AdaptiveBoosting

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Cascading
Usingcascadeclassifierstodetectobjects
Accessingyourphone’scamerausingOpenCV
Acamerapreview
UIdefinitions
Previewingthecameraframes
Detectingclosedpalmsinthecameraframes
UsingtheJava-basedcascadeclassifier
Summary
Index

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OpenCVAndroidProgrammingBy
Example

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OpenCVAndroidProgrammingBy
Example
Copyright©2015PacktPublishing
Allrightsreserved.Nopartofthisbookmaybereproduced,storedinaretrievalsystem,
ortransmittedinanyformorbyanymeans,withoutthepriorwrittenpermissionofthe
publisher,exceptinthecaseofbriefquotationsembeddedincriticalarticlesorreviews.
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However,PacktPublishingcannotguaranteetheaccuracyofthisinformation.
Firstpublished:December2015
Productionreference:1071215
PublishedbyPacktPublishingLtd.
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ISBN978-1-78355-059-3
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Credits

Author
AmgadMuhammad
Reviewers
NoritsunaImamura
AndréMoreira
CommissioningEditor
NeilAlexander
AcquisitionEditor
MeetaRajani
ContentDevelopmentEditor
MayurPawanikar
TechnicalEditor
ManthanRaja
CopyEditor
TasneemFatehi
ProjectCoordinator
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Proofreader
SafisEditing
Indexer
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Graphics
AhmedH.Alley
KirkD’Penha
JasonMonteiro
ProductionCoordinator
ArvindkumarGupta
CoverWork
ArvindkumarGupta

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AbouttheAuthor
AmgadMuhammadhasamaster’sdegreeincomputersciencefromtheAmerican
UniversityinCairo.Heisadatascientistpassionateaboutbuildinganddesigning
machinelearningmodelsandengineeringfeaturesincomputervisionresearch.Hestarted
workingwithcomputervisionin2011,andnowheisdevelopingstate-of-the-artmachine
learningandcomputervisionalgorithmsinthefieldofbiometricextractionand
registration,includingfaceandpersondetection,humantracking,and2D/3D-basedpose
estimation.
First,Iwouldliketothankmylovelywife,Noha,andmybeautifulkids,Zain,Hla,and
Darine,fortheircontinuouscaresothatIcouldfinishthisbook.Thebookisthefruitof
myfamily’ssupportandunderstanding,inspiteofallthetimeittookmeawayfromthem,
andalltheweekendsIspentinfrontofmycomputer.Itwasreallyachallengingandlong
journey,havingafull-timejobandmygraduatestudieswhilewritingthisbook,but,asa
lovingandcaringfamily,wewereabletopullthrough.
Iwouldalsoliketothankmybestfriend,AhmedHassanAlley,forthebeautifulgraphics
andillustrations.AndIwouldliketothankMayurPawanikar,ManthanRaja,andMeeta
Rajaniforhelpingmethroughouttheeditingprocess;theymadeitreallyeasy.

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AbouttheReviewers
NoritsunaImamuraisaspecialistinembeddedLinux/Android-basedcomputervision,
andisoneofthemainmembersofSIProp.org(Hismainworks
areasfollows:
ITRISmartGlass,whichissimilartoGoogleGlass.Heworkedonthisusing
Android4.3andOpenCV2.4inJune2014
( />&SiteID=1&MmmID=620622510147005345&Keyword=&MSid=4858).
TreasureHuntingRobot,abrainwave-controlledrobotthathedevelopedinFebruary
2012( />OpenCVfortheAndroidNDK,whichhasbeenincludedsinceAndroid4.0.1
( />AutoChasingTurtle,ahumanfacerecognitionrobotwithKinect,whichhe
developedinFebruary2011( />product%2FAutoChasingTurtle).
FeelSketch,anARauthoringtoolandARbrowserasanAndroidapplication,which
hedevelopedinDecember2009( />Hecanbecontactedviae-mailat<>.
AndréMoreirareceivedhismaster’sdegreeincomputersciencefromPontificalCatholic
UniversityofRiodeJaneiro,Brazilin2015.CurrentlyheisPhDcandidateinthesame
university.
Hegraduatedwithabachelor’sdegreeincomputersciencefromUniversidadeFederaldo
Maranhão(UFMA)inBrazil.Duringhisundergraduatedegree,hewasamemberof
Labmint’sresearchteamandworkedwithmedicalimaging,specificallybreastcancer
detectionanddiagnosisusingimageprocessing.
Currently,heworksasaresearcherandsystemanalystatInstitutoTecgraf,oneofthe
majorresearchanddevelopmentlabsincomputergraphicsinBrazil.Hehasbeenworking
extensivelywithPHP,HTML,andCSSsince2007.Nowadays,hedevelopsprojectsin
C++11/C++14,alongwithSQLite,Qt,Boost,andOpenGL.Moreinformationabouthim
canbeacquiredonhispersonalwebsiteatwww.andredsm.com.

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