private void LoadSelectedImage()
{
// Load an image using ReadFile
form2.BeforeImage.ReadFile(imagePath.Text);
// Histogram the image
HistogramReport report = Algorithms.Histogram(form2.BeforeImage);
int[] histogram = new int[256];
report.Histogram.CopyTo(histogram, 0);
// Convert the int[] to a double[], which the graph requires.
double[] histogramDouble = Array.ConvertAll <int, double>(histogram, delegate(int i) { return(i); });
simpleRangeSelect1.PlotY(histogramDouble);
// Process the image
ProcessImage();
}
private void imageViewer1_RoiChanged(object sender, NationalInstruments.Vision.WindowsForms.ContoursChangedEventArgs e)
{
simpleGraph1.ClearData();
// Compute the histogram of the regions selected
if (imageViewer1.Roi.Count > 0)
{
using (VisionImage mask = new VisionImage())
{
// Find the histogram of a portal of the image in imageViewer1
// defined by the Roi of imageViewer1.
Algorithms.RoiToMask(mask, imageViewer1.Roi);
HistogramReport report = Algorithms.Histogram(imageViewer1.Image, 256, new Range(0, 255), mask);
// Plot the histogram on the graph
int[] histogram = new int[256];
report.Histogram.CopyTo(histogram, 0);
// Convert the int[] to a double[], which the graph requires.
double[] histogramDouble = Array.ConvertAll <int, double>(histogram, delegate(int i) { return(i); });
simpleGraph1.PlotY(histogramDouble);
}
}
}
