public MError SetLivenessParam(ASF_LivenessThreshold livenessThreshold)
{
var retCode = MError.MERR_UNKNOWN;
IntPtr ptrLivenessThreshold = MemoryHelper.Malloc(MemoryHelper.SizeOf <ASF_LivenessThreshold>());
MemoryHelper.StructureToPtr <ASF_LivenessThreshold>(livenessThreshold, ptrLivenessThreshold);
try
{
if (ptrVideoEngine == IntPtr.Zero)
{
retCode = InitialEngineForVideo();
}
else
{
retCode = MError.MOK;
}
if (retCode == MError.MOK)
{
retCode = Afw.Services.Initialization.SetLivenessParam(ptrVideoEngine, ptrLivenessThreshold);
}
if (retCode != MError.MOK)
{
Afw.Core.Helper.SimplifiedLogHelper.WriteIntoSystemLog(nameof(Afw.WinForm.EngineContext), $"SetLivenessParam Error:{retCode.GetFieldDescription()}");
}
}
catch (Exception ex)
{
Afw.Core.Helper.SimplifiedLogHelper.WriteIntoSystemLog(nameof(Afw.WinForm.EngineContext), $"SetLivenessParam Exception:{ex.ToString()}");
}
return(retCode);
}
private void SetLivenessParam()
{
ASF_LivenessThreshold a = new ASF_LivenessThreshold();
if (engineContext.IrCameraIdx >= 0)
{
a.thresholdmodel_BGR = 0.75f;
}
else
{
a.thresholdmodel_BGR = 0.85f;
}
a.thresholdmodel_IR = 0.7f;
engineContext.SetLivenessParam(a);
}
/// <summary>
/// 设置活体阈值：取值范围[0-1]内部默认数值RGB-0.5，IR-0.7， 用户可以根据实际需求，设置不同的阈值
/// </summary>
/// <param name="rgbThreshold">RGB活体阈值</param>
/// <param name="irThreshole">IR活体阈值</param>
/// <returns>返回0表示正常；返回负数请根据ErrorCodeUtil类注释查看；其他值请在官网-帮助中心查询</returns>
public int ASFSetLivenessParam(float rgbThreshold = 0.5f, float irThreshole = 0.7f)
{
ASF_LivenessThreshold livebessThreshold = new ASF_LivenessThreshold();
//对应设置阈值
livebessThreshold.thresholdmodel_BGR = (rgbThreshold >= 0 && rgbThreshold <= 1) ? rgbThreshold : 0.5f;
livebessThreshold.thresholdmodel_IR = (irThreshole >= 0 && irThreshole <= 1) ? irThreshole : 0.7f;
IntPtr pLivenessThreshold = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_LivenessThreshold>());
MemoryUtil.StructureToPtr(livebessThreshold, pLivenessThreshold);
//调用SDK接口
int retCode = ASFFunctions.ASFSetLivenessParam(pEngine, pLivenessThreshold);
MemoryUtil.Free(pLivenessThreshold);
return(retCode);
}
public static extern MResult ASFSetLivenessParam(IntPtr hEngine, ASF_LivenessThreshold threshold);