Examples with RankedScoreCalculator uk.ac.sussex.gdsc.core.match.RankedScoreCalculator used on opensource projects

Example 1 with RankedScoreCalculator

use of uk.ac.sussex.gdsc.core.match.RankedScoreCalculator in project GDSC-SMLM by aherbert.

the class SpotFinderPreview method run.

private void run(ImageProcessor ip, MaximaSpotFilter filter) {
    if (refreshing) {
        return;
    }
    currentSlice = imp.getCurrentSlice();
    final Rectangle bounds = ip.getRoi();
    // Crop to the ROI
    FloatProcessor fp = ip.crop().toFloat(0, null);
    float[] data = (float[]) fp.getPixels();
    final int width = fp.getWidth();
    final int height = fp.getHeight();
    // Store the mean bias and gain of the region data.
    // This is used to correctly overlay the filtered data on the original image.
    double bias = 0;
    double gain = 1;
    boolean adjust = false;
    // Set weights
    final CameraModel cameraModel = fitConfig.getCameraModel();
    if (!(cameraModel instanceof FakePerPixelCameraModel)) {
        // This should be done on the normalised data
        final float[] w = cameraModel.getNormalisedWeights(bounds);
        filter.setWeights(w, width, height);
        data = data.clone();
        if (data.length < ip.getPixelCount()) {
            adjust = true;
            bias = MathUtils.sum(cameraModel.getBias(bounds)) / data.length;
            gain = MathUtils.sum(cameraModel.getGain(bounds)) / data.length;
        }
        cameraModel.removeBiasAndGain(bounds, data);
    }
    final Spot[] spots = filter.rank(data, width, height);
    data = filter.getPreprocessedData();
    final int size = spots.length;
    if (topNScrollBar != null) {
        topNScrollBar.setMaximum(size);
        selectScrollBar.setMaximum(size);
    }
    fp = new FloatProcessor(width, height, data);
    final FloatProcessor out = new FloatProcessor(ip.getWidth(), ip.getHeight());
    out.copyBits(ip, 0, 0, Blitter.COPY);
    if (adjust) {
        fp.multiply(gain);
        fp.add(bias);
    }
    out.insert(fp, bounds.x, bounds.y);
    final double min = fp.getMin();
    final double max = fp.getMax();
    out.setMinAndMax(min, max);
    final Overlay o = new Overlay();
    o.add(new ImageRoi(0, 0, out));
    if (label != null) {
        // Get results for frame
        final Coordinate[] actual = ResultsMatchCalculator.getCoordinates(actualCoordinates, imp.getCurrentSlice());
        final Coordinate[] predicted = new Coordinate[size];
        for (int i = 0; i < size; i++) {
            predicted[i] = new BasePoint(spots[i].x + bounds.x, spots[i].y + bounds.y);
        }
        // Compute assignments
        final LocalList<FractionalAssignment> fractionalAssignments = new LocalList<>(3 * predicted.length);
        final double matchDistance = settings.distance * fitConfig.getInitialPeakStdDev();
        final RampedScore score = RampedScore.of(matchDistance, matchDistance * settings.lowerDistance / 100, false);
        final double dmin = matchDistance * matchDistance;
        final int nActual = actual.length;
        final int nPredicted = predicted.length;
        for (int j = 0; j < nPredicted; j++) {
            // Centre in the middle of the pixel
            final float x = predicted[j].getX() + 0.5f;
            final float y = predicted[j].getY() + 0.5f;
            // Any spots that match
            for (int i = 0; i < nActual; i++) {
                final double dx = (x - actual[i].getX());
                final double dy = (y - actual[i].getY());
                final double d2 = dx * dx + dy * dy;
                if (d2 <= dmin) {
                    final double d = Math.sqrt(d2);
                    final double s = score.score(d);
                    if (s == 0) {
                        continue;
                    }
                    double distance = 1 - s;
                    if (distance == 0) {
                        // In the case of a match below the distance thresholds
                        // the distance will be 0. To distinguish between candidates all below
                        // the thresholds just take the closest.
                        // We know d2 is below dmin so we subtract the delta.
                        distance -= (dmin - d2);
                    }
                    // Store the match
                    fractionalAssignments.add(new ImmutableFractionalAssignment(i, j, distance, s));
                }
            }
        }
        final FractionalAssignment[] assignments = fractionalAssignments.toArray(new FractionalAssignment[0]);
        // Compute matches
        final RankedScoreCalculator calc = RankedScoreCalculator.create(assignments, nActual - 1, nPredicted - 1);
        final boolean save = settings.showTP || settings.showFP;
        final double[] calcScore = calc.score(nPredicted, settings.multipleMatches, save);
        final ClassificationResult result = RankedScoreCalculator.toClassificationResult(calcScore, nActual);
        // Compute AUC and max jaccard (and plot)
        final double[][] curve = RankedScoreCalculator.getPrecisionRecallCurve(assignments, nActual, nPredicted);
        final double[] precision = curve[0];
        final double[] recall = curve[1];
        final double[] jaccard = curve[2];
        final double auc = AucCalculator.auc(precision, recall);
        // Show scores
        final String scoreLabel = String.format("Slice=%d, AUC=%s, R=%s, Max J=%s", imp.getCurrentSlice(), MathUtils.rounded(auc), MathUtils.rounded(result.getRecall()), MathUtils.rounded(MathUtils.maxDefault(0, jaccard)));
        setLabel(scoreLabel);
        // Plot
        String title = TITLE + " Performance";
        Plot plot = new Plot(title, "Spot Rank", "");
        final double[] rank = SimpleArrayUtils.newArray(precision.length, 0, 1.0);
        plot.setLimits(0, nPredicted, 0, 1.05);
        plot.setColor(Color.blue);
        plot.addPoints(rank, precision, Plot.LINE);
        plot.setColor(Color.red);
        plot.addPoints(rank, recall, Plot.LINE);
        plot.setColor(Color.black);
        plot.addPoints(rank, jaccard, Plot.LINE);
        plot.setColor(Color.black);
        plot.addLabel(0, 0, scoreLabel);
        final WindowOrganiser windowOrganiser = new WindowOrganiser();
        ImageJUtils.display(title, plot, 0, windowOrganiser);
        title = TITLE + " Precision-Recall";
        plot = new Plot(title, "Recall", "Precision");
        plot.setLimits(0, 1, 0, 1.05);
        plot.setColor(Color.red);
        plot.addPoints(recall, precision, Plot.LINE);
        plot.drawLine(recall[recall.length - 1], precision[recall.length - 1], recall[recall.length - 1], 0);
        plot.setColor(Color.black);
        plot.addLabel(0, 0, scoreLabel);
        ImageJUtils.display(title, plot, 0, windowOrganiser);
        windowOrganiser.tile();
        // Create Rois for TP and FP
        if (save) {
            final double[] matchScore = RankedScoreCalculator.getMatchScore(calc.getScoredAssignments(), nPredicted);
            int matches = 0;
            for (int i = 0; i < matchScore.length; i++) {
                if (matchScore[i] != 0) {
                    matches++;
                }
            }
            if (settings.showTP) {
                final float[] x = new float[matches];
                final float[] y = new float[x.length];
                int count = 0;
                for (int i = 0; i < matchScore.length; i++) {
                    if (matchScore[i] != 0) {
                        final BasePoint p = (BasePoint) predicted[i];
                        x[count] = p.getX() + 0.5f;
                        y[count] = p.getY() + 0.5f;
                        count++;
                    }
                }
                addRoi(0, o, x, y, count, Color.green);
            }
            if (settings.showFP) {
                final float[] x = new float[nPredicted - matches];
                final float[] y = new float[x.length];
                int count = 0;
                for (int i = 0; i < matchScore.length; i++) {
                    if (matchScore[i] == 0) {
                        final BasePoint p = (BasePoint) predicted[i];
                        x[count] = p.getX() + 0.5f;
                        y[count] = p.getY() + 0.5f;
                        count++;
                    }
                }
                addRoi(0, o, x, y, count, Color.red);
            }
        }
    } else {
        final WindowOrganiser wo = new WindowOrganiser();
        // Option to show the number of neighbours within a set pixel box radius
        final int[] count = spotFilterHelper.countNeighbours(spots, width, height, settings.neighbourRadius);
        // Show as histogram the totals...
        new HistogramPlotBuilder(TITLE, StoredData.create(count), "Neighbours").setIntegerBins(true).setPlotLabel("Radius = " + settings.neighbourRadius).show(wo);
        // TODO - Draw n=0, n=1 on the image overlay
        final LUT lut = LutHelper.createLut(LutColour.FIRE_LIGHT);
        // These are copied by the ROI
        final float[] x = new float[1];
        final float[] y = new float[1];
        // Plot the intensity
        final double[] intensity = new double[size];
        final double[] rank = SimpleArrayUtils.newArray(size, 1, 1.0);
        final int top = (settings.topN > 0) ? settings.topN : size;
        final int size_1 = size - 1;
        for (int i = 0; i < size; i++) {
            intensity[i] = spots[i].intensity;
            if (i < top) {
                x[0] = spots[i].x + bounds.x + 0.5f;
                y[0] = spots[i].y + bounds.y + 0.5f;
                final Color c = LutHelper.getColour(lut, size_1 - i, size);
                addRoi(0, o, x, y, 1, c, 2, 1);
            }
        }
        final String title = TITLE + " Intensity";
        final Plot plot = new Plot(title, "Rank", "Intensity");
        plot.setColor(Color.blue);
        plot.addPoints(rank, intensity, Plot.LINE);
        if (settings.topN > 0 && settings.topN < size) {
            plot.setColor(Color.magenta);
            plot.drawLine(settings.topN, 0, settings.topN, intensity[settings.topN - 1]);
        }
        if (settings.select > 0 && settings.select < size) {
            plot.setColor(Color.yellow);
            final int index = settings.select - 1;
            final double in = intensity[index];
            plot.drawLine(settings.select, 0, settings.select, in);
            x[0] = spots[index].x + bounds.x + 0.5f;
            y[0] = spots[index].y + bounds.y + 0.5f;
            final Color c = LutHelper.getColour(lut, size_1 - settings.select, size);
            addRoi(0, o, x, y, 1, c, 3, 3);
            plot.setColor(Color.black);
            plot.addLabel(0, 0, "Selected spot intensity = " + MathUtils.rounded(in));
        }
        ImageJUtils.display(title, plot, 0, wo);
        wo.tile();
    }
    imp.setOverlay(o);
}

Example 2 with RankedScoreCalculator

use of uk.ac.sussex.gdsc.core.match.RankedScoreCalculator in project GDSC-SMLM by aherbert.

the class MultiPathFilter method score.

/**
 * Score the assignments (TP/FP) and then clear the list.
 *
 * @param assignments The assignments
 * @param score Scores array to accumulate TP/FP scores
 * @param predicted The number of predictions
 * @param save Set to true to save the scored assignments
 * @param actual The number of actual results in the frame
 * @return the fractional assignments
 */
@Nullable
private static FractionalAssignment[] score(final ArrayList<FractionalAssignment> assignments, final double[] score, final int predicted, boolean save, int actual) {
    if (assignments.isEmpty()) {
        return null;
    }
    final FractionalAssignment[] tmp = assignments.toArray(new FractionalAssignment[0]);
    final RankedScoreCalculator calc = RankedScoreCalculator.create(tmp, actual, predicted);
    final double[] result = calc.score(predicted, false, save);
    score[0] += result[0];
    score[1] += result[1];
    score[2] += result[2];
    score[3] += result[3];
    assignments.clear();
    return calc.getScoredAssignments();
}