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Java example source code file (PlotFiltersIterationListener.java)

This example Java source code file (PlotFiltersIterationListener.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

awt, bufferedimage, file, image, imageio, indarray, ioexception, list, override, plotfiltersiterationlistener, util

The PlotFiltersIterationListener.java Java example source code

package org.deeplearning4j.plot.iterationlistener;

import org.canova.image.loader.ImageLoader;
import org.deeplearning4j.nn.api.Model;
import org.deeplearning4j.optimize.api.IterationListener;
import org.deeplearning4j.plot.PlotFilters;
import org.nd4j.linalg.api.ndarray.INDArray;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.List;

/**
 * @author Adam Gibson
 */
public class PlotFiltersIterationListener implements IterationListener {
    private List<String> variables;
    private int iteration = 1;
    private  PlotFilters filters;
    private File outputFile = new File("render.png");


    public PlotFiltersIterationListener(PlotFilters plotFilters,List<String> variables, int iteration) {
        this.filters = plotFilters;
        this.variables = variables;
        this.iteration = iteration;
    }

    public List<String> getVariables() {
        return variables;
    }

    public void setVariables(List<String> variables) {
        this.variables = variables;
    }

    public int getIteration() {
        return iteration;
    }

    public void setIteration(int iteration) {
        this.iteration = iteration;
    }

    public PlotFilters getFilters() {
        return filters;
    }

    public void setFilters(PlotFilters filters) {
        this.filters = filters;
    }

    public File getOutputFile() {
        return outputFile;
    }

    public void setOutputFile(File outputFile) {
        this.outputFile = outputFile;
    }

    @Override
    public boolean invoked() {
        return false;
    }

    @Override
    public void invoke() {

    }

    @Override
    public void iterationDone(Model model, int iteration) {
        if(this.iteration > 0 && iteration % this.iteration == 0) {
            INDArray weights = model.getParam(variables.get(0));
            filters.setInput(weights.transpose());
            filters.plot();
            INDArray plot = filters.getPlot();
            BufferedImage image = ImageLoader.toImage(plot);
            try {
                outputFile.createNewFile();
                ImageIO.write(image, "png", outputFile);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

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