/// <summary>
/// Fire An Image Event
/// </summary>
/// <param name="image">Image To Event</param>
protected static void FireImageEvent(object sender, Guid cardId, Guid imageId,
ImageType imageType,
Mat image,
double angle,
float X,
float Y,
CannyParam cannyParameter = null,
ThresholdParm thresholdParmeter = null)
{
ImageEventArgs eventArgs = new ImageEventArgs(cardId, imageId, imageType, image, angle, X, Y,
cannyParameter: cannyParameter, thresholdParamter: thresholdParmeter);
if (ImageEvent != null)
{
ImageEvent(sender: sender, data: eventArgs);
}
}
public ImageEventArgs(Guid cardId, Guid imageId, ImageType imageType,
Mat image,
double angle,
float x,
float y,
CannyParam cannyParameter = null,
ThresholdParm thresholdParamter = null)
{
CardId = cardId;
ImageId = imageId;
ImageType = imageType;
Image = image.Clone();
Angle = angle;
X = x;
Y = y;
CannyParameters = cannyParameter;
ThresholdParamters = thresholdParamter;
}
/// <summary>
/// Get Thresold Image
/// </summary>
/// <returns></returns>
public Mat GetThresholdImage(double angle, ThresholdParm thresholdParam)
{
//double thresold = 130;
//double maxValue = 255;
if (_thresholdImage.image == null || _thresholdImage.angle != angle || !_thresholdImage.thresholdParm.Equals(thresholdParam))
{
using (Mat thresoldImage = new Mat())
{
using (Mat rotatedImage = GetRotatedImage(angle))
{
CvInvoke.Threshold(rotatedImage, thresoldImage, threshold: thresholdParam.Threshold, maxValue: thresholdParam.MaxValue, thresholdType: ThresholdType.BinaryInv);
_thresholdImage.image = thresoldImage.Clone();
_thresholdImage.angle = angle;
_thresholdImage.thresholdParm = thresholdParam;
}
}
}
return(_thresholdImage.image.Clone());
}
/// <summary>
/// Fire the Image Event And Send a Contoured Image
/// </summary>
protected void FireImageEvent(object sender, Guid cardId, Guid imageId, ImageType imageType,
double angle, float X, float Y, CannyParam cannyParameter = null, ThresholdParm thresholdParmeter = null)
{
if (ImageEvent != null)
{
using (var image = GetContouredImage(angle, cannyParameter))
{
Image.FireImageEvent(null, cardId, imageId, imageType, image, angle, X, Y, cannyParameter);
}
}
}
/// <summary>
/// Get a filtered image that is good for OCR
/// </summary>
public Mat GetFilteredImage(MTGCardFrame cardTitleType, double angle, ThresholdParm thresoldParameter, CannyParam cannyParameter)
{
if (_filteredImage.image == null || _filteredImage.cannyParam != cannyParameter || _filteredImage.angle != angle)
{
using (Mat titleImage = GetImage())
{
Size titleSize = titleImage.Size;
int minX = titleImage.Width;
int maxX = titleImage.Height;
int minY = 0;
int maxY = 0;
// Get the Canny Image To Make A Contour Set For the Letters
using (Mat titleCannyImage = GetCannyImage(() => { return(GetThresholdImage(angle, thresoldParameter)); }, angle, cannyParameter))
{
using (Mat maskedImage = new Mat(titleSize, DepthType.Cv8U, 1))
{
// White/black out the mask. Legacy cards are white letters on color, the new style is black letters in a colored title box.
maskedImage.SetTo(cardTitleType == MTGCardFrame.M15 ? black : white);
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
CvInvoke.FindContours(titleCannyImage, contours, hierarchy: null, mode: retrType, method: chainApproxMethod);
for (int i = 1; i < contours.Size; i++)
{
using (VectorOfPoint contour = contours[i])
{
Rectangle rect = CvInvoke.BoundingRectangle(contour);
double relativeY = (double)rect.Y / (double)titleSize.Height;
double relativeX = (double)rect.X / (double)titleSize.Width;
double relativeBottom = ((double)rect.Y + (double)rect.Height) / (double)titleSize.Height;
double relativeRight = ((double)rect.X + (double)rect.Width) / (double)titleSize.Width;
double relativeWidth = (double)rect.Width / (double)titleSize.Width;
double relativeHeight = (double)rect.Height / (double)titleSize.Height;
// The Characters Start In the 10 % of the Title Image, and Complete Within the
if (((relativeY > .10) && (relativeY < .80) &&
(relativeBottom > .30) && (relativeBottom < .95) &&
(relativeRight > .025) && (relativeX < .95)) &&
(relativeWidth < .09) && (relativeHeight > .07))
{
// Make a mask of rectangles that represent the title.
CvInvoke.Rectangle(maskedImage, rect, new MCvScalar(255, 255, 255), -1);
// Keep Track Of the Border Area Which Comprises The Letters
minX = Math.Min(rect.X, minX);
minY = Math.Min(rect.Y, minY);
maxX = Math.Max(rect.X + rect.Width, maxX);
maxY = Math.Max(rect.Y + rect.Height, maxY);
}
}
}
}
// The result is the same depth/channels as the thresold
using (Mat result = GetThresholdImage(angle, thresoldParameter))
{
// Clear the result
result.SetTo(cardTitleType == MTGCardFrame.M15 ? black : white);
// Use the Mask To Take Just The Title From the thresoldImage
GetThresholdImage(angle, thresoldParameter).CopyTo(result, maskedImage);
_filteredImage.image = result.Clone();
_filteredImage.cannyParam = cannyParameter;
_filteredImage.angle = angle;
}
}
}
}
}
return(_filteredImage.image.Clone());
}
