/// <summary>
/// Open the reader and capture two fingers to compare.
/// </summary>
private void VerifyThread()
{
Constants.ResultCode result = Constants.ResultCode.DP_DEVICE_FAILURE;
result = currentinstance.CurrentReader.Open(Constants.CapturePriority.DP_PRIORITY_COOPERATIVE);
if (result != Constants.ResultCode.DP_SUCCESS)
{
MessageBox.Show("Error: " + result);
if (currentinstance.CurrentReader != null)
{
currentinstance.CurrentReader.Dispose();
currentinstance.CurrentReader = null;
}
return;
}
Fmd fmd1 = null;
// Fmd fmd2 = null;
SendMessage("Place a finger on the reader.");
int count = 0;
while (!reset)
{
Fid fid = null;
if (!currentinstance.CaptureFinger(ref fid))
{
break;
}
if (fid == null)
{
continue;
}
SendMessage("A finger was captured.");
DataResult <Fmd> resultConversion = FeatureExtraction.CreateFmdFromFid(fid, Constants.Formats.Fmd.ANSI);
if (resultConversion.ResultCode != Constants.ResultCode.DP_SUCCESS)
{
break;
}
/* if (count == 0)
* {
* fmd1 = resultConversion.Data;
* count += 1;
* SendMessage("Now place the same or a different finger on the reader.");
* }
* else if (count == 1)
* {
* fmd2 = resultConversion.Data;
* CompareResult compareResult = Comparison.Compare(fmd1, 0, fmd2, 0);
*
* if (compareResult.ResultCode != Constants.ResultCode.DP_SUCCESS)
* {
* break;
* }
*
* SendMessage("Comparison resulted in a dissimilarity score of " + compareResult.Score.ToString() + (compareResult.Score < (PROBABILITY_ONE/100000) ? " (fingerprints matched)" : " (fingerprints did not match)"));
* SendMessage("Place a finger on the reader.");
* count = 0;
* }*/
fmd1 = resultConversion.Data;
bool pass_threshold = false;
foreach (Fmd fd in database)
{
CompareResult compareResult = Comparison.Compare(fmd1, 0, fd, 0);
if (compareResult.ResultCode != Constants.ResultCode.DP_SUCCESS)
{
break;
}
pass_threshold = compareResult.Score < (PROBABILITY_ONE / 100000);
SendMessage("Comparison resulted in a dissimilarity score of " + compareResult.Score.ToString() + (pass_threshold ? " (fingerprints matched)" : " (fingerprints did not match)"));
//SendMessage("Place a finger on the reader.");
if (pass_threshold)
{
MessageBox.Show("Verification Successful", "Success", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
break;
}
}
if (!pass_threshold)
{
MessageBox.Show("Verification Failed!!!", "Alert", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
if (currentinstance.CurrentReader != null)
{
currentinstance.CurrentReader.Dispose();
}
}
