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RichardsonLucy.java
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Sun, Jun 23, 22:07

RichardsonLucy.java
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/*
* DeconvolutionLab2
*
* Conditions of use: You are free to use this software for research or
* educational purposes. In addition, we expect you to include adequate
* citations and acknowledgments whenever you present or publish results that
* are based on it.
*
* Reference: DeconvolutionLab2: An Open-Source Software for Deconvolution
* Microscopy D. Sage, L. Donati, F. Soulez, D. Fortun, G. Schmit, A. Seitz,
* R. Guiet, C. Vonesch, M Unser, Methods of Elsevier, 2017.
*/
/*
* Copyright 2010-2017 Biomedical Imaging Group at the EPFL.
*
* This file is part of DeconvolutionLab2 (DL2).
*
* DL2 is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* DL2 is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* DL2. If not, see <http://www.gnu.org/licenses/>.
*/
package deconvolution.algorithm;
import java.util.concurrent.Callable;
import signal.ComplexSignal;
import signal.Operations;
import signal.RealSignal;
import signal.SignalCollector;
public class RichardsonLucy extends AbstractAlgorithm implements Callable<RealSignal> {
public RichardsonLucy(int iter) {
super();
this.iterMax = iterMax;
}
// x(k+1) = x(k) *. Hconj * ( y /. H x(k))
@Override
public RealSignal call() {
ComplexSignal H = fft.transform(h);
ComplexSignal U = new ComplexSignal("RL-U", y.nx, y.ny, y.nz);
RealSignal x = y.duplicate();
RealSignal p = y.duplicate();
RealSignal u = y.duplicate();
while (!controller.ends(x)) {
fft.transform(x, U);
U.times(H);
fft.inverse(U, u);
Operations.divide(y, u, p);
fft.transform(p, U);
U.timesConjugate(H);
fft.inverse(U, u);
x.times(u);
}
SignalCollector.free(H);
SignalCollector.free(p);
SignalCollector.free(u);
SignalCollector.free(U);
return x;
}
@Override
public String getName() {
return "Richardson-Lucy";
}
@Override
public String[] getShortnames() {
return new String[] {"RL"};
}
@Override
public int getComplexityNumberofFFT() {
return 1 + 5 * iterMax;
}
@Override
public double getMemoryFootprintRatio() {
return 9.0;
}
@Override
public boolean isRegularized() {
return false;
}
@Override
public boolean isStepControllable() {
return false;
}
@Override
public boolean isIterative() {
return true;
}
@Override
public boolean isWaveletsBased() {
return false;
}
@Override
public void setParameters(double[] params) {
if (params == null)
return;
if (params.length > 0)
iterMax = (int) Math.round(params[0]);
}
@Override
public double[] getDefaultParameters() {
return new double[] { 10 };
}
@Override
public double[] getParameters() {
return new double[] { iterMax };
}
@Override
public double getRegularizationFactor() {
return 0.0;
}
@Override
public double getStepFactor() {
return 0;
}
}

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