public static bool AutoFocus(IVideoProvider provider, float maxPos, float minPos, float step = 0.2f)
{
try
{
if (provider == null)
{
return(false);
}
bool isCapture = provider.IsRunning;
Dictionary <double, float> pos = new Dictionary <double, float>();
Z_Axis.AxisJogAbsWork(maxPos);
if (!WaitAxisMoveDone())
{
return(false);
}
if (!isCapture)
{
provider.StartCapture();
}
int stepTick = (int)((maxPos - minPos) / step);
double scalValue = 0;
int tick = 0;
for (int i = 0; i < stepTick; i++)
{
Z_Axis.AxisJogIncWork(-step, true);
Thread.Sleep(20);
Bitmap map = provider.GetCurrentFrame();
double qua = map.GetLinearQuality();
if (!pos.ContainsKey(qua))
{
if (qua < scalValue)
{
if (tick++ > 3)
{
break;
}
}
else
{
tick = 0;
}
scalValue = qua;
pos.Add(qua, z_Axis.RealPos);
}
}
double maxKey = pos.Max(r => r.Key);
float desPos = pos[maxKey];
Z_Axis.AxisJogAbsWork(desPos);
if (!isCapture)
{
provider.StopCapture();
}
pos.Clear();
GC.Collect();
if (step / 20 < 0.005)
{
return(true);
}
else
{
return(AutoFocus(provider, desPos + step, desPos - step, step / 10));
}
}
catch
{
return(false);
}
}
