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java.lang.Objectcz.cuni.jagrlib.DefaultProperty
cz.cuni.jagrlib.Piece
cz.cuni.jagrlib.DefaultDiscreteTransform
cz.cuni.jagrlib.piece.DCT
public class DCT
Discrete cosine transform (can process 1D or 2D data of arbitrary size).
Field Summary | |
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protected double[][] |
base
Transform bases for last computed transform sizes (accelerator). |
protected int |
last
Last cache to be recycled (0 or 1. |
protected int[] |
len
Last computed transform sizes (accelerator). |
static RegPiece |
reg
Static registration instance for this class. |
protected double[] |
tmpD
Temporary array for in-place transforms. |
Fields inherited from class cz.cuni.jagrlib.DefaultDiscreteTransform |
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CATEGORY, TEMPLATE_NAME |
Fields inherited from class cz.cuni.jagrlib.Piece |
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channels, info, pl, plugs, TEMPLATE_TYPE, userBreak |
Fields inherited from interface cz.cuni.jagrlib.iface.Property |
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LOGGING, STATISTICS, TEXT_DESCRIPTION |
Constructor Summary | |
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DCT()
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Method Summary | |
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protected double[] |
assertBase(int l)
Computes base matrix for the given size. |
boolean |
getSizeBounds(int[] bounds)
Get extreme domain (source) ranges. |
int |
inverse1D(double[] coef,
int len,
double[] sample,
int start)
Inverse 1D transform (floating-point form). |
static int |
setTemplate(Template t,
int ord)
General-purpose registration routine. |
int |
transform1D(double[] sample,
int start,
int len,
double[] coef)
Forward 1D transform (floating-point form). |
Methods inherited from class cz.cuni.jagrlib.DefaultDiscreteTransform |
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inverse1D, inverse2D, inverse2D, loadData, storeData, transform1D, transform2D, transform2D |
Methods inherited from class cz.cuni.jagrlib.Piece |
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className, connect, findPlug, findPlug, getInfo, getInterface, getInterface, getPlug, getReg, init, isCompatible, isCompatible, isConnected, logError, logWarning, myInterface, newInputPlug, newOptOutputPlug, newOutputPlug, newPlug, noTemplates, propBegin, propBounds, propDefault, propEnd, propEnum, propManipulator, propManipulator, setProgressListener, setRegStrings, setTemplateDynamic, stop |
Methods inherited from class cz.cuni.jagrlib.DefaultProperty |
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booleanProperty, booleanProperty, colorDoubleProperty, colorProperty, commit, doubleProperty, doubleProperty, doubleProperty, enumProperty, floatProperty, floatProperty, floatProperty, get, intProperty, intProperty, intProperty, longProperty, longProperty, longProperty, set, set, stringProperty |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface cz.cuni.jagrlib.iface.Property |
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commit, get, set |
Field Detail |
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protected double[][] base
protected int[] len
protected int last
protected double[] tmpD
public static final RegPiece reg
Constructor Detail |
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public DCT()
Method Detail |
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protected double[] assertBase(int l)
public boolean getSizeBounds(int[] bounds)
getSizeBounds
in interface DiscreteTransform
getSizeBounds
in class DefaultDiscreteTransform
bounds
- Pre-allocated array to hold extreme ranges:
public int transform1D(double[] sample, int start, int len, double[] coef)
transform1D
in interface DiscreteTransform
transform1D
in class DefaultDiscreteTransform
sample
- Source array (containing sample data).start
- Starting index of the transformed segment.len
- Source segment length.coef
- Pre-allocated array to hold transformed data (coefficients).
inverse1D(double[],int,double[],int)
,
DefaultDiscreteTransform.transform1D(int[],int,int,int[])
public int inverse1D(double[] coef, int len, double[] sample, int start)
transform1D(double[],int,int,double[])
.
inverse1D
in interface DiscreteTransform
inverse1D
in class DefaultDiscreteTransform
coef
- Source array (holding coefficients).len
- Number of coefficients.sample
- Pre-allocated array to hold reconstructed sample data.start
- Starting index of the reconstructed sample data.
transform1D(double[],int,int,double[])
,
DefaultDiscreteTransform.inverse1D(int[],int,int[],int)
public static int setTemplate(Template t, int ord)
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