/// <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);
}