// Use this for initialization
void Start()
{
// Plot data must be a 1xN or Nx1 matrix.
// Plot data type must be double (CV_64F)
Mat data = new Mat(30, 1, CvType.CV_64F);
Core.randu(data, 0, 500); // random values
Mat plot_result = new Mat();
// Plot2d plot = Plot.createPlot2d (data);
Plot2d plot = Plot2d.create(data);
plot.setPlotBackgroundColor(new Scalar(50, 50, 50));
plot.setPlotLineColor(new Scalar(50, 50, 255));
plot.render(plot_result);
Imgproc.cvtColor(plot_result, plot_result, Imgproc.COLOR_BGR2RGB);
Texture2D texture = new Texture2D(plot_result.cols(), plot_result.rows(), TextureFormat.RGBA32, false);
Utils.matToTexture2D(plot_result, texture);
gameObject.GetComponent <Renderer> ().material.mainTexture = texture;
}
/// <summary>
/// Add a plot of the 1D histogram.
/// </summary>
/// <param name="name">The name of the histogram</param>
/// <param name="color">The drawing color</param>
/// <param name="histogram">The 1D histogram to be drawn</param>
/// <param name="binSize">The size of the bin</param>
/// <param name="ranges">The ranges</param>
/// <returns>The image of the histogram</returns>
public Mat GenerateHistogram(String name, Color color, Mat histogram, int binSize, float[] ranges)
{
//Debug.Assert(histogram.Dimension == 1, Properties.StringTable.Only1DHistogramSupported);
#region draw the histogram
RangeF range = new RangeF(ranges[0], ranges[1]);
float step = (range.Max - range.Min) / binSize;
float start = range.Min;
double[] bin = new double[binSize];
for (int binIndex = 0; binIndex < binSize; binIndex++)
{
bin[binIndex] = start;
start += step;
}
double[] binVal = new double[histogram.Size.Height];
GCHandle handle = GCHandle.Alloc(binVal, GCHandleType.Pinned);
using (Matrix <double> m = new Matrix <double>(binVal.Length, 1, handle.AddrOfPinnedObject(),
sizeof(double)))
{
histogram.ConvertTo(m, DepthType.Cv64F);
}
handle.Free();
using (VectorOfDouble x = new VectorOfDouble(bin))
using (VectorOfDouble y = new VectorOfDouble(binVal))
{
using (Emgu.CV.Plot.Plot2d plot = new Plot2d(x, y))
{
plot.SetShowText(false);
plot.SetPlotBackgroundColor(new MCvScalar(255, 255, 255));
plot.SetPlotLineColor(new MCvScalar(0, 0, 0));
plot.SetPlotGridColor(new MCvScalar(220, 220, 220));
plot.SetGridLinesNumber(255);
plot.SetPlotSize(512, 200);
plot.SetMinX(0);
plot.SetMaxX(256);
plot.SetMinY(-1);
plot.SetMaxY(binVal.Max());
plot.SetInvertOrientation(true);
Mat render = new Mat();
plot.Render(render);
CvInvoke.PutText(render, name, new Point(20, 30), FontFace.HersheyComplex, 0.8,
new MCvScalar(0, 0, 255));
return(render);
}
}
#endregion
}
