public void SelectBackground()
{
bool[,,] black = m_data.selectBlackPixels((byte)threshold);
//threshold = threshold - 20;
m_data.AddSegment(black);
m_legendScript.LoadLegendFromSegmentationHandler();
}
// This runs in the main thread
protected override void OnFinished()
{
Debug.LogError("entered OnFinished for flood fill");
m_data.AddSegment(visited);
m_segmentationHandler.FinishedSegmentationCallback();
}