public void FromImageTest()
{
foreach (int bitsPerPixel in new[] { 8 /*, 16*/ })
{
Image src = new Image(23, 20, bitsPerPixel, 200, 200);
src.Randomize(this.random);
IntegralImage dst = IntegralImage.FromImage(src);
Assert.AreEqual(src.Width + 1, dst.Width);
Assert.AreEqual(src.Height + 1, dst.Height);
for (int x = 0; x < src.Width; x++)
{
for (int y = 0; y < src.Height; y++)
{
int actual = dst[x + 1, y + 1];
int expected = 0;
for (int ix = 0; ix <= x; ix++)
{
for (int iy = 0; iy <= y; iy++)
{
expected += (int)src.GetPixel(ix, iy);
}
}
Assert.AreEqual(expected, actual);
}
}
}
}
public void build_integral_image()
{
System.Drawing.Bitmap img = new System.Drawing.Bitmap(path);
iimg = IntegralImage.FromImage(img);
img.Dispose();
integral_image = true;
}
private void btnRunSurf_Click(object sender, EventArgs e)
{
OpenFileDialog openFileDialog = new OpenFileDialog();
openFileDialog.ShowDialog();
string pathToFile = openFileDialog.FileName;
Stopwatch watch = new Stopwatch();
watch.Start();
try
{
// Load an Image
Bitmap img = new Bitmap(pathToFile);
pbMainPicture.Image = img;
// Create Integral Image
IntegralImage iimg = IntegralImage.FromImage(img);
// Extract the interest points
ipts = FastHessian.getIpoints(0.0002f, 5, 2, iimg);
// Describe the interest points
SurfDescriptor.DecribeInterestPoints(ipts, false, false, iimg);
// Draw points on the image
PaintSURF(img, ipts);
}
catch
{
}
watch.Stop();
this.Text = "DemoSURF - Elapsed time: " + watch.Elapsed +
" for " + ipts.Count + "points";
}