}//end findListOfMatchingChars
public static double distanceBetweenChars(PossibleChar firstChar, PossibleChar secondChar)
{
int intX = Math.Abs(firstChar.intCenterX - secondChar.intCenterX);
int intY = Math.Abs(firstChar.intCenterY - secondChar.intCenterY);
return(Math.Sqrt(Math.Pow(intX, 2) + Math.Pow(intY, 2)));
}//end
}//end findListOfListsOfMatchingChars
public static List <PossibleChar> findListOfMatchingChars(PossibleChar possibleChar, List <PossibleChar> listOfChars)
{
List <PossibleChar> listOfMatchingChars = new List <PossibleChar>();
foreach (PossibleChar possibleMatchingChar in listOfChars)
{
if (!possibleMatchingChar.Equals(possibleChar))
//if (possibleMatchingChar!=possibleChar)
{
//break;//sprobowac jak wyzej
double dblDistanceBetweenChars = distanceBetweenChars(possibleChar, possibleMatchingChar);
double dblAngleBetweenChars = angleBetweenChars(possibleChar, possibleMatchingChar);
double dblChangeInArea = Math.Abs(possibleMatchingChar.intRectArea - possibleChar.intRectArea) / possibleChar.intRectArea;
double dblChangeInWidth = Math.Abs(possibleMatchingChar.boundingRect.Width - possibleChar.boundingRect.Width) / possibleChar.boundingRect.Width;
double dblChangeInHeight = Math.Abs(possibleMatchingChar.boundingRect.Height - possibleChar.boundingRect.Height) / possibleChar.boundingRect.Height;
if (dblDistanceBetweenChars < (possibleChar.dblDiagonalSize * MAX_DIAG_SIZE_MULTIPLE_AWAY) &&
dblAngleBetweenChars < MAX_ANGLE_BETWEEN_CHARS &&
dblChangeInArea < MAX_CHANGE_IN_AREA &&
dblChangeInWidth < MAX_CHANGE_IN_WIDTH &&
dblChangeInHeight < MAX_CHANGE_IN_HEIGHT)
{
listOfMatchingChars.Add(possibleMatchingChar);
}
}
}
return(listOfMatchingChars);
}//end findListOfMatchingChars
}//end
public static double angleBetweenChars(PossibleChar firstChar, PossibleChar secondChar)
{
double dblAdj = (double)(Math.Abs(firstChar.intCenterX - secondChar.intCenterX));
double dblOpp = (double)(Math.Abs(firstChar.intCenterY - secondChar.intCenterY));
double dblAngleInRad = Math.Atan(dblOpp / dblAdj);
double dblAngleInDeg = dblAngleInRad * (180.0 / Math.PI);
return(dblAngleInDeg);
}//end
}// end findpossiblecharinplate
public static bool checkIfPossibleChar(PossibleChar possibleChar)
{
if ((possibleChar.intRectArea > MIN_RECT_AREA &&
possibleChar.boundingRect.Width > MIN_PIXEL_WIDTH && possibleChar.boundingRect.Height > MIN_PIXEL_HEIGHT &&
MIN_ASPECT_RATIO < possibleChar.dblAspectRatio && possibleChar.dblAspectRatio < MAX_ASPECT_RATIO))
{
return(true);
}
else
{
return(false);
}
}// end checkifpossiblechar
}//end detectcharsinplate
public static List <PossibleChar> findPossibleCharsInPlate(Mat imgGrayscale, Mat imgThresh)
{
List <PossibleChar> listOfPossibleChars = new List <PossibleChar>();
Mat imgThreshCopy = new Mat();
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
imgThreshCopy = imgThresh.Clone();
CvInvoke.FindContours(imgThreshCopy, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);
for (int i = 0; i <= contours.Size - 1; i++)
{
PossibleChar possibleChar = new PossibleChar(contours[i]);
if (checkIfPossibleChar(possibleChar))
{
listOfPossibleChars.Add(possibleChar);
}
}
return(listOfPossibleChars);
}// end findpossiblecharinplate
}//end detectplatesinscene
public static List <PossibleChar> findPossibleCharsInScene(Mat imgThresh)
{
List <PossibleChar> listOfPossibleChars = new List <PossibleChar>();
Mat imgContours = new Mat(imgThresh.Size, DepthType.Cv8U, 3);
int intCountOfPossibleChars = 0;
Mat imgThreshCopy = imgThresh.Clone();
VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();
CvInvoke.FindContours(imgThreshCopy, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);
for (int i = 0; i < contours.Size - 1; i++)
{
//if (frm.IsCheckedSteps() == true)
//{
// CvInvoke.DrawContours(imgContours, contours, i, SCALAR_WHITE);
//}
PossibleChar possibleChar = new PossibleChar(contours[i]);
if (DetectChars.checkIfPossibleChar(possibleChar))
{
intCountOfPossibleChars = intCountOfPossibleChars + 1;
listOfPossibleChars.Add(possibleChar);
}
}
//if (frm.IsCheckedSteps() == true)
//{
// CvInvoke.Imshow("2a", imgContours);
//}
return(listOfPossibleChars);
}//end possibleplateinscene
