import?java.awt.Image;

import?java.util.ArrayList;

/**
?*?A?standard?implementation?of?the?IDetector?interface.?FastHessian?builds?an
?*?Hessian?Matrix?for?each?different?scale.?Then?it?thresholds?the?results?and
?*?performs?a?non-maximal?suppression?in?order?to?localize?the?Interest?Points
?*?in?the?scale?space.
?*
?*?@author?Alessandro?Martini?Claudio?Fantacci??Mite?Mitreski
?*/
public?class?FastHessian?implements?IDetector?{

????private?IIntegralImage?integralImage;
????private?int?imgHeight;
????private?int?imgWidth;
????private?float?balanceValue;
????private?float?threshold;
????private?int?octaves;
????private?IGAUSSconvolution?gaussConvolution;
????private?ArrayList>?hessianDeterminantsByOctaves;
????private?ArrayList?interestPoints;
????private?Image?parent;

????/**
?????*?Constructor?of?FastHessian.
?????*
?????*?@param?integralImage
?????*?@param?imgWidth
?????*?@param?imgHeight
?????*?@param?balanceValue
?????*????????????Value?used?to?calculate?the?Laplacian?of?Gaussian?response.
?????*?@param?threshold
?????*????????????Value?used?to?filter?the?Laplacian?of?Gaussian.
?????*?@param?octaves
?????*????????????Number?of?octaves?that?you?want?to?compute.
?????*?@param?parent
?????*????????????Papplet?where?you?display?your?video?output.
?????*/
????public?FastHessian（IIntegralImage?integralImage?int?imgWidth
????????????int?imgHeight?float?balanceValue?float?threshold?int?octaves
????????????Image?parent）?{
????????this.integralImage?=?integralImage;
????????this.threshold?=?threshold;
????????this.octaves?=?octaves;
????????this.gaussConvolution?=?new?GAUSSconvolution（integralImage）;
????????interestPoints?=?new?ArrayList（）;
????????hessianDeterminantsByOctaves?=?new?ArrayList>（octaves）;
????????this.parent?=?parent;
????????this.imgWidth?=?imgWidth;
????????this.imgHeight?=?imgHeight;
????}

????/**
?????*?After?building?all?the?determinants?matrix?at?each?octaves?at?each
?????*?scale?FastHessian?thresholds?the?results?and?then?apply?a
?????*?non-maximal?suppression?in?order?to?detect?the?Interest?Points.
?????*/
????public?ArrayList?generateInterestPoints（）?{
????????buildDet（）;
????????threshold（）;
????????nonMaximalSuppression（）;
????????return?interestPoints;
????}

????private?void?buildDet（）?{
????????float?Dxx;
????????float?Dyy;
????????float?Dxy;
????????float?balancaValueSquared=balanceValue?*?balanceValue;
????????int?center;
????????int?filterArea;
????????int?filterIncrease?=?3;
????????int?firstFiltersizeOfTheOctave?=?9;
????????for?（int?k?=?0;?k?????????????ArrayList?hessianDeterminantsOfAScale?=?new?ArrayList（）;
????????????filterIncrease?=?2?*?filterIncrease;

????????????for?（int?filtersize?=?firstFiltersizeOfTheOctave;
????????????????????filtersize?????????????????????（3?*?filterIncrease）?+?1）;?filtersize?+=?filterIncrease）?{
????????????????/*

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????446??2012-06-19?14:39??SURF\.classpath

?????文件????????285??2012-06-19?14:39??SURF\.mymetadata

?????文件???????1061??2012-06-19?14:39??SURF\.project

?????文件????????330??2012-06-19?14:39??SURF\.settings\org.eclipse.jdt.core.prefs

?????文件???????8512??2012-06-19?14:39??SURF\src\FastHessian.java

?????文件???????4586??2012-06-19?14:39??SURF\src\GAUSSconvolution.java

?????文件???????2008??2012-06-19?14:39??SURF\src\HAARConvolution.java

?????文件????????452??2012-06-19?14:39??SURF\src\IDescriptor.java

?????文件????????382??2012-06-19?14:39??SURF\src\IDetector.java

?????文件???????1373??2012-06-19?14:39??SURF\src\IGAUSSconvolution.java

?????文件???????1050??2012-06-19?14:39??SURF\src\IHAARconvolution.java

?????文件????????962??2012-06-19?14:39??SURF\src\IIntegralImage.java

?????文件???????2656??2012-06-19?14:39??SURF\src\IntegralImage.java

?????文件???????3867??2012-06-19?14:39??SURF\src\InterestPoint.java

?????文件???????1943??2012-06-19?14:39??SURF\src\ISURFfactory.java

?????文件???????4418??2012-06-19?14:39??SURF\src\SURF.java

?????文件???????4441??2012-06-19?14:39??SURF\src\SURFdescriptor.java

?????文件???????2459??2012-06-19?14:39??SURF\src\Test.java

?????文件????????829??2012-06-19?14:39??SURF\WebRoot\index.jsp

?????文件?????????36??2012-06-19?14:39??SURF\WebRoot\meta-INF\MANIFEST.MF

?????文件???????4736??2012-06-19?14:39??SURF\WebRoot\WEB-INF\classes\FastHessian.class

?????文件???????1695??2012-06-19?14:39??SURF\WebRoot\WEB-INF\classes\GAUSSconvolution.class

?????文件???????1010??2012-06-19?14:39??SURF\WebRoot\WEB-INF\classes\HAARConvolution.class

?????文件????????142??2012-06-19?14:39??SURF\WebRoot\WEB-INF\classes\IDescriptor.class

?????文件????????221??2012-06-19?14:39??SURF\WebRoot\WEB-INF\classes\IDetector.class

?????文件????????211??2012-06-19?14:39??SURF\WebRoot\WEB-INF\classes\IGAUSSconvolution.class

?????文件????????178??2012-06-19?14:39??SURF\WebRoot\WEB-INF\classes\IHAARconvolution.class

?????文件????????182??2012-06-19?14:39??SURF\WebRoot\WEB-INF\classes\IIntegralImage.class

?????文件???????1459??2012-06-19?14:39??SURF\WebRoot\WEB-INF\classes\IntegralImage.class

?????文件???????3926??2012-06-19?14:39??SURF\WebRoot\WEB-INF\classes\InterestPoint.class

............此處省略18個文件信息