/// <summary>
/// Constructor.
/// </summary>
/// <param name="detectionResults">The detection results.</param>
/// <param name="width">The width of the bitmap buffer that was used for detection in screen coordinates.</param>
/// <param name="height">The height of the bitmap buffer that was used for detection in screen coordinates.</param>
/// <param name="frameNumber">The frame number where the results where detected.</param>
public MarkerDetectionEventArgs(DetectionResults detectionResults, int width, int height, long frameNumber)
{
this.DetectionResults = detectionResults;
this.BufferWidth = width;
this.BufferHeight = height;
this.FrameNumber = frameNumber;
}
/// <summary>
/// Detects all markers in the buffer.
/// </summary>
/// <param name="buffer">The buffer which should be searched for markers.</param>
/// <returns>The results of the detection.</returns>
protected DetectionResults DetectAllMarkers(INyARRgbRaster buffer)
{
// Filter buffer
if (!isAdaptive)
{
((NyARRasterFilter_ARToolkitThreshold)this.bufferFilter).setThreshold(this.Threshold);
}
this.bufferFilter.doFilter(buffer, this.filteredBuffer);
// Detect and return results
this.squareDetectionListener.Reset();
this.squareDetectionListener.Buffer = buffer;
this.squareDetector.detectMarkerCB(this.filteredBuffer, squareDetectionListener);
var results = this.squareDetectionListener.Results;
// Prevent jittering
if (previousResults != null && JitteringThreshold != 0)
{
var jitThresholdSq = JitteringThreshold * JitteringThreshold;
var newResults = new DetectionResults();
foreach (var result in results)
{
var previousResult = previousResults.FirstOrDefault(r => r.Marker == result.Marker);
if (previousResult == null)
{
newResults.Add(result);
}
else
{
var pcenter = previousResult.Square.Center;
var center = result.Square.Center;
var dx = pcenter.X - center.X;
var dy = pcenter.X - center.X;
var lenSq = dx * dx + dy * dy;
newResults.Add(lenSq > jitThresholdSq ? result : previousResult);
}
}
previousResults = newResults;
return(newResults);
}
previousResults = results;
return(results);
}
/// <summary>
/// Resets the Results
/// </summary>
public void Reset()
{
this.Results = new DetectionResults();
}
