/// <summary>
/// Basic implementation of checking the coordinates falling within the circle.
/// It generates a square around the center to check the bounding of the given coordinate.
/// </summary>
/// <param name="given"></param>
/// <param name="marked"></param>
/// <returns></returns>
public static bool check_mark(Coordinate given, BLOB marked)
{
double radius = marked.radius;
double new_x_right, new_x_left, new_y_top, new_y_bottom;
new_x_right = marked.x + radius;
new_y_top = marked.y - radius;
new_x_left = marked.x - radius;
new_y_bottom = marked.y + radius;
bool result = false;
if (given.x <= new_x_right && given.x >= new_x_left && given.y <= new_y_bottom && given.y >= new_y_top)
result = true;
return result;
}
/// <summary>
/// Basic implementation of checking the coordinates falling within the circle.
/// It generates a square around the center to check the bounding of the given coordinate.
/// </summary>
/// <param name="given"></param>
/// <param name="marked"></param>
/// <returns></returns>
public static bool check_mark(Coordinate given, BLOB marked)
{
double radius = marked.radius;
double new_x_right, new_x_left, new_y_top, new_y_bottom;
new_x_right = marked.x + radius;
new_y_top = marked.y - radius;
new_x_left = marked.x - radius;
new_y_bottom = marked.y + radius;
bool result = false;
if (given.x <= new_x_right && given.x >= new_x_left && given.y <= new_y_bottom && given.y >= new_y_top)
{
result = true;
}
return(result);
}
public void blob_detect ()
{
Bitmap image = this.scanned_image;
BlobCounter blob = new BlobCounter();
blob.FilterBlobs = false;
int blob_ht_width = 30;
blob.MinHeight = blob_ht_width;
blob.MinWidth = blob_ht_width;
blob.ProcessImage(image);
Blob[] b = blob.GetObjectsInformation();
SimpleShapeChecker shapeChecker = new SimpleShapeChecker();
/*blob_counter.Text = b.Length.ToString();
Graphics g = Graphics.FromImage(image2);
Pen yellowPen = new Pen(Color.Yellow, 5);
Pen redPen = new Pen(Color.Red, 5);
Pen greenPen = new Pen(Color.Green, 5);
int b_counter = 0;
*/
for (int i = 0, n = b.Length; i < n; i++)
{
List<IntPoint> edgePoints = blob.GetBlobsEdgePoints(b[i]);
List<IntPoint> edges = new List<IntPoint>();
AForge.Point center;
float radius;
if (shapeChecker.IsCircle(edgePoints, out center, out radius))
{
if (b[i].Fullness * 100 >= 40 && b[i].Fullness * 100 < 100 && radius > 10)
{
Coordinate coor = new Coordinate(center.X, center.Y);
BLOB blb = new BLOB(coor, radius);
useful.Add(blb);
}
}
}
}