001/*
002 * Copyright (C) Photon Vision.
003 *
004 * This program is free software: you can redistribute it and/or modify
005 * it under the terms of the GNU General Public License as published by
006 * the Free Software Foundation, either version 3 of the License, or
007 * (at your option) any later version.
008 *
009 * This program is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012 * GNU General Public License for more details.
013 *
014 * You should have received a copy of the GNU General Public License
015 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
016 */
017
018package org.photonvision.vision.pipe.impl;
019
020import java.util.ArrayList;
021import java.util.List;
022import org.photonvision.vision.opencv.Contour;
023import org.photonvision.vision.pipe.CVPipe;
024
025public class SpeckleRejectPipe
026        extends CVPipe<List<Contour>, List<Contour>, SpeckleRejectPipe.SpeckleRejectParams> {
027    private final List<Contour> m_despeckledContours = new ArrayList<>();
028
029    @Override
030    protected List<Contour> process(List<Contour> in) {
031        for (var c : m_despeckledContours) {
032            c.mat.release();
033        }
034        m_despeckledContours.clear();
035
036        if (!in.isEmpty()) {
037            double averageArea = 0.0;
038            for (Contour c : in) {
039                averageArea += c.getArea();
040            }
041            averageArea /= in.size();
042
043            double minAllowedArea = params.getMinPercentOfAvg() / 100.0 * averageArea;
044            for (Contour c : in) {
045                if (c.getArea() >= minAllowedArea) {
046                    m_despeckledContours.add(c);
047                } else {
048                    c.release();
049                }
050            }
051        }
052
053        return m_despeckledContours;
054    }
055
056    public static class SpeckleRejectParams {
057        private final double m_minPercentOfAvg;
058
059        public SpeckleRejectParams(double minPercentOfAvg) {
060            m_minPercentOfAvg = minPercentOfAvg;
061        }
062
063        public double getMinPercentOfAvg() {
064            return m_minPercentOfAvg;
065        }
066    }
067}