void DrawHistogram(PictureBox window, CVHistogram histo, int channelIdx)
{
int imageWidth = window.Width;
int imageHeight = window.Height;
int bins = histo.BinSizes[0];
int binWidth = imageWidth / bins;
if (binWidth <= 0)
{
binWidth = 1;
}
CVPair minMax = histo.MinMaxValue;
CVImage outputImage = new CVImage(imageWidth, imageHeight, CVDepth.Depth8U, 3);
outputImage.Zero();
for (int bin = 0; bin < bins; bin++)
{
double binValue = histo[bin];
byte level = (byte)CVUtils.Round(binValue * 255 / minMax.Second);
byte binHeight = (byte)CVUtils.Round(binValue * imageHeight / minMax.Second);
byte[] color = new byte[3];
color[channelIdx] = (byte)(((double)bin / (double)bins) * 255);
byte[] markerColor = new byte[3];
markerColor[channelIdx] = level;
Color colColor = Color.FromArgb(color[2], color[1], color[0]);
Color colMarker = Color.FromArgb(markerColor[2], markerColor[1], markerColor[0]);
outputImage.DrawRectangle(new Rectangle(bin * binWidth, imageHeight - binHeight, binWidth - 1, binHeight), colColor);
outputImage.DrawRectangle(new Rectangle(bin * binWidth, imageHeight - binHeight, binWidth - 1, binHeight), colMarker);
outputImage.DrawRectangle(new Rectangle(bin * binWidth, imageHeight - binHeight, 1, binHeight), colMarker);
}
window.Image = outputImage.ToBitmap();
outputImage.Release();
}
private void ParseBuffer()
{
//This is the tricky code that stores all data received
//parses and stores it in a List of command value pairs
try {
if (serialPort1.IsOpen)
{
//Read everything the Arduino has sent so far
incomeBuffer += serialPort1.ReadExisting();
}
//Split string into c-v pairs
//For example: "digital-HIGH&analog-512&led-HIGH&"
//will be split in { "digital-HIGH", "analog-512", "led-HIGH", ""}
string[] cvPairs = incomeBuffer.Split('&');
incomeBuffer = cvPairs[cvPairs.Length - 1];
for (int i = 0; i < (cvPairs.Length - 1); i++)
{
string[] cvPair = cvPairs[i].Split('-');
if (cvPair.Length == 2)
{
//If the pair has not exactly 2 elements
//a command and a value, discard it
CVPair pair = new CVPair();
pair.Command = cvPair[0];
pair.Value = cvPair[1];
dataQueue.Enqueue(pair);
Console.WriteLine("Command Enqued: " + cvPairs[i]);
}
else
{
Console.WriteLine("Command Discarded: " + cvPairs[i]);
}
}
} catch (Exception ex) {
timer1.Stop();
timer1.Enabled = false;
Console.WriteLine(ex);
MessageBox.Show("Error reading data from the Arduino");
this.Close();
}
}
public CVHistogram(int[] binSizes, CVPair[] binRanges)
{
CreateHist(binSizes, binRanges);
}
protected void CreateHist(int[] binSizes, CVPair[] binRanges)
{
this._binSizes = binSizes;
this._binRanges = binRanges;
float[][] ranges = new float[binRanges.Length][];
// make sure ranges & sizes are of the same dimention.
System.Diagnostics.Debug.Assert(binSizes.Length == binRanges.Length, "Ranges & sizes must be of the same dimention");
// create ranges array.
for (int i = 0; i < binRanges.Length; ++i)
{
float[] range = new float[2];
range[0] = binRanges[i].First;
range[1] = binRanges[i].Second;
ranges[i] = range;
}
this.Internal = PInvoke.cvCreateHist(this._binSizes, (int)CVHistogramType.Array, ranges, true);
CVUtils.CheckLastError();
}
public CVHistogram CalcHistogram(int[] binSizes, CVPair[] binRanges, CVImage mask)
{
CVHistogram h = new CVHistogram(binSizes, binRanges);
__IplImagePtr[] images = new __IplImagePtr[this.Channels];
if (this.Channels == 1)
{
images[0] = this.Internal;
}
else
{
CVImage[] planes = this.Split();
for (int i = 0; i < planes.Length; ++i)
{
images[i] = planes[i].Internal;
}
}
__CvArrPtr maskArr = IntPtr.Zero;
if (mask != null) maskArr = mask.Array;
PInvoke.cvCalcHist(images, h.Internal, 0, maskArr);
CVUtils.CheckLastError();
return h;
}
public CVHistogram CalcHistogram(int[] binSizes, CVPair[] binRanges)
{
return CalcHistogram(binSizes, binRanges, null);
}
public CVHistogram CalcHistogram(int binsSize, CVImage mask)
{
Int32[] binSizes = new Int32[3];
CVPair[] binRanges = new CVPair[3];
binSizes[0] = binSizes[1] = binSizes[2] = binsSize;
binRanges[0] = binRanges[1] = binRanges[2] = new CVPair(0, 255);
return CalcHistogram(binSizes, binRanges, mask);
}
