private void GlyphComparator_MatchFoundInternal(object sender, GlyphComparatorEventArgs e)
{
if (_glyphToFind != null)
{
_glyphToFind.CompareInfo.Matches.Add(e.MatchingInfo);
}
if (_glyphSearched != null)
{
_glyphSearched.CompareInfo.Matches.Add(e.MatchingInfo);
}
}
/// <summary>
///
/// </summary>
/// <param name="imageToParse"></param>
/// <param name="imageToFind"></param>
/// <param name="maxErr"></param>
/// <returns></returns>
private bool FindImageAdapter(IImageAdapter imageToParse, IImageAdapter imageToFind, double maxErr)
{
if (imageToParse == null)
{
throw new ArgumentNullException("imageToParse", "variable must be set to a valid instance of an object implementing IImageAdapter (null passed in)");
}
if (imageToFind == null)
{
throw new ArgumentNullException("imageToFind", "variable must be set to a valid instance of an object implementing IImageAdapter (null passed in)");
}
float[] hist = new float[MatchingInfo.HistogramLength];
int pixelCount = imageToFind.Height * imageToFind.Width;
int maxX = (int)imageToParse.Width;
int maxY = (int)imageToParse.Height;
int minX = 0;
int minY = 0;
long feedbackCount = 0;
bool found = false;
// Parse the whole image
for (int y = minY; y < maxY; y++)
{
for (int x = minX; x < maxX; x++)
{
if (y + imageToFind.Height >= maxY || x + imageToFind.Width >= maxX)
{
continue;
}
// Init histogram
for (int u = 0; u < MatchingInfo.HistogramLength; u++)
{
hist[u] = 0f;
}
double err = 0;
int count = 0;
// compare target (sub-area) and glyph (full area)
for (int glyphY = 0; glyphY < imageToFind.Height; glyphY++)
{
for (int glyphX = 0; glyphX < imageToFind.Width; glyphX++)
{
IColor targetColor = imageToParse[x + glyphX, y + glyphY];
IColor glyphColor = imageToFind[glyphX, glyphY];
//
if (glyphColor.Alpha != 0 && targetColor.Alpha != 0)
{
float deltaColor = (float)(Math.Abs(targetColor.Red - glyphColor.Red) + Math.Abs(targetColor.Green - glyphColor.Green) + Math.Abs(targetColor.Blue - glyphColor.Blue)) / 3f;
err += deltaColor / pixelCount;
if (err > maxErr)
{
goto ExitInternalLoop;
}
AddInc((float)deltaColor, hist);
count++;
}
}
}
if (err <= maxErr)
{
if (count > 0)
{
GlyphComparatorEventArgs glyphComp = new GlyphComparatorEventArgs(new MatchingInfo());
glyphComp.MatchingInfo.Error = (float)err;
glyphComp.MatchingInfo.BoundingBox = new Rectangle(x, y, imageToFind.Width, imageToFind.Height);
// Normalize histogram
for (int i = 0; i < MatchingInfo.HistogramLength; i++)
{
glyphComp.MatchingInfo.Histogram[i] = hist[i] / count;
}
// ProcessMatch(matchingInfo);
if (MatchFoundEvent != null)
{
MatchFoundEvent(this, glyphComp);
}
found = true;
}
}
else
{
// Log.WriteLine();
goto ExitExternalLoop;
}
ExitInternalLoop:
feedbackCount++;
if (feedbackCount % 100 == 0)
{
// Give Feedback
// Log.Write(".");
}
} // for x
} // for y
ExitExternalLoop:
if (found == false)
{
// Log.WriteLine(" < TEMPLATE NOT FOUND during the Scan>");
}
return(found);
}