//*****************************************************************************
//该版本每位用户对应6组虹膜编码（6个左眼，6个右眼）2015.9.1修改
//*****************************************************************************
using IAiCamIrisLib;
using irisRefactor.IrisCamera;
using System;
using System.Collections;
using System.Data;
using System.IO;
using System.Windows.Forms;
namespace irisMemory
{
public class IrisCodeListMgr
{
private static byte[] m_byLeft = null;
private static byte[] m_byRight = null;
private Hashtable m_htblUsers = null;
private int m_IrisCodeCount = 0;
private iCamIrisClass m_iCamIrisLib = new iCamIrisClass();
/// <summary>
/// 数据库注册的用户总数
/// </summary>
public int TotalUsers
{
get { return m_IrisCodeCount; }
}
/// <summary>
/// 创建匹配用虹膜模板list，每位用户对应：3组左眼虹膜编码 & 3组右眼虹膜编码
/// </summary>
/// <param name="ds"> Data set </param>
public void CreateList(DataSet ds)
{
//获取数据集中的用户总数
m_IrisCodeCount = ds.Tables[0].Rows.Count;
//创建哈希表，用于存储用户Id信息
m_htblUsers = new Hashtable();
//创建匹配用的全部用户虹膜编码codeList
m_byLeft = new byte[1024 * m_IrisCodeCount * 3];
m_byRight = new byte[1024 * m_IrisCodeCount * 3];
lock (m_byLeft)
{
lock (m_byRight)
{
for (int iCounter = 0; iCounter < ds.Tables[0].Rows.Count; iCounter++)
{
//获取该用户全部虹膜编码
object icLeft = ds.Tables[0].Rows[iCounter]["LEFT_IRIS_CODE1"];
object icRight = ds.Tables[0].Rows[iCounter]["RIGHT_IRIS_CODE1"];
object icLeft2 = ds.Tables[0].Rows[iCounter]["LEFT_IRIS_CODE2"];
object icRight2 = ds.Tables[0].Rows[iCounter]["RIGHT_IRIS_CODE2"];
object icLeft3 = ds.Tables[0].Rows[iCounter]["LEFT_IRIS_CODE3"];
object icRight3 = ds.Tables[0].Rows[iCounter]["RIGHT_IRIS_CODE3"];
//获取该用户Id信息，添加到哈希表
string sUser = ds.Tables[0].Rows[iCounter]["PERSON_ID"].ToString();
m_htblUsers.Add(iCounter, sUser);
//将该用户的三组左眼虹膜编码依次粘贴至m_byLeft
if (System.DBNull.Value != icLeft)
Array.Copy((byte[])icLeft, 0, m_byLeft, iCounter * 3 * 1024, 1024);
if (System.DBNull.Value != icLeft2)
Array.Copy((byte[])icLeft2, 0, m_byLeft, (iCounter * 3 + 1) * 1024, 1024);
if (System.DBNull.Value != icLeft3)
Array.Copy((byte[])icLeft3, 0, m_byLeft, (iCounter * 3 + 2) * 1024, 1024);
//将该用户的三组右眼虹膜编码依次粘贴至m_byRight
if (System.DBNull.Value != icRight)
Array.Copy((byte[])icRight, 0, m_byRight, iCounter * 3 * 1024, 1024);
if (System.DBNull.Value != icRight2)
Array.Copy((byte[])icRight2, 0, m_byRight, (iCounter * 3 + 1) * 1024, 1024);
if (System.DBNull.Value != icRight3)
Array.Copy((byte[])icRight3, 0, m_byRight, (iCounter * 3 + 2) * 1024, 1024);
}
}
}
}
/// <summary>
/// 通过匹配出的iMatchNumber获取到用户Id
/// </summary>
/// <param name="index"> 参数index输入为匹配出的iMatchNumber，取值范围为1，2, 3 ...m_IrisCodeCount*6*2；
/// <中间变量 indexHash> 中间量indexHash代表index在哈希表中的排号，取值范围为0，1, 2...m_IrisCodeCount
/// <returns> </returns> indexHash对应的用户Id
/// eg1: iMatchNumber：1-12， 对应indexHash：0；
/// eg2: iMatchNumber：13-24，对应indexHash：1;
public string GetUserForIndex(int index)
{
int indexHash;
if (index % 6 != 0) indexHash = index / 6;
else indexHash = index / 6 - 1;
if ((indexHash > m_htblUsers.Count + 1) || (indexHash < 0))
return "";
return m_htblUsers[indexHash].ToString();
}
/// <summary>
/// 识别设备捕捉到一只眼睛时的匹配
/// <param name="byImage"> Iris image </param>
/// <param name="fHammingDistance"> Hamming distance </param>
/// <param name=" LeftRight"> Left or Right </param>
/// <returns> 0 or >0 </returns>
public int MatchOneEye(byte[] byImage, out float fHammingDistance, out int LeftRight)
{
int iRetval;
object iIrisCode;
int iMatchNumber = 0;
fHammingDistance = 1;
LeftRight = 0;
//先利用4000对待识别图像进行长编码
int RetCoding = m_iCamIrisLib.CreateLongIrisCode(byImage, out iIrisCode);
if (RetCoding == 0)
{
lock (m_byRight)
{
//与右眼逐一比对
iRetval = m_iCamIrisLib.MatchByLongIrisCode(out iMatchNumber, (byte[])iIrisCode, m_byRight, m_IrisCodeCount * 3 * 2);
if (iRetval == 0 && iMatchNumber > 0)
{
m_iCamIrisLib.GetInformation(Constants.RECOGNITION_HD, out fHammingDistance);
LeftRight = 2;
return iMatchNumber;
}
else
{
lock (m_byLeft)
{
//如果右眼未匹配，再对左眼进行逐一比对
iRetval = m_iCamIrisLib.MatchByLongIrisCode(out iMatchNumber, iIrisCode, m_byLeft, m_IrisCodeCount * 3 * 2);
if (iRetval == 0 && iMatchNumber > 0)
{
m_iCamIrisLib.GetInformation(Constants.RECOGNITION_HD, out fHammingDistance);
LeftRight = 1;
return iMatchNumber;
}
}
}
}
}
return 0;
}
/// <summary>
/// 与左眼进行匹配
/// <param name="byImage"> Iris image </param>
/// <param name="fHammingDistance"> Hamming distance </param>
/// <param name=" LeftRight"> Left or Right </param>
/// <returns> 0 on failure </returns> iMatchNumber on success match
public int MatchLeftEye(byte[] byImage, out float fHammingDistance)
{
int iRetval;
object iIrisCode;
int iMatchNumber = 0;
fHammingDistance = 1;
//先利用4000对待识别图像进行长编码
int RetCoding = m_iCamIrisLib.CreateLongIrisCode(byImage, out iIrisCode);
if (RetCoding == 0)//编码成功
{
//逐一比对
iRetval = m_iCamIrisLib.MatchByLongIrisCode(out iMatchNumber, (byte[])iIrisCode, m_byLeft, m_IrisCodeCount * 3 * 2);
if (iRetval == 0 && 0 != iMatchNumber)
{
m_iCamIrisLib.GetInformation(Constants.RECOGNITION_HD, out fHammingDistance);
return iMatchNumber;
}
}
return 0;
}
/// <summary>
/// 与右眼进行匹配
/// </summary>
/// <param name="byImage"></param>
/// <param name="fHammingDistance"></param>
/// <returns></returns>
public int MatchRightEye(byte[] byImage, out float fHammingDistance)
{
int iRetval;
object iIrisCode;
int iMatchNumber = 0;
fHammingDistance = 1;
//先利用4000对待识别图像进行长编码
int RetCoding = m_iCamIrisLib.CreateLongIrisCode(byImage, out iIrisCode);
if (RetCoding == 0)//编码成功
{
//逐一比对
iRetval = m_iCamIrisLib.MatchByLongIrisCode(out iMatchNumber, (byte[])iIrisCode, m_byRight, m_IrisCodeCount * 3 * 2);
if (iRetval == 0 && 0 != iMatchNumber)
{
m_iCamIrisLib.GetInformation(Constants.RECOGNITION_HD, out fHammingDistance);
return iMatchNumber;
}
}
return 0;
}
/// <summary>
/// 与任意一只眼睛进行匹配
/// </summary>
/// <param name="byImage"></param>
/// <param name="fHammingDistance"></param>
/// <returns></returns>
/// <summary>
public int MatchEitherEye(byte[] byImage, out float fHammingDistance)
{
int iRetval;
object iIrisCode;
int iMatchNumber = 0;
fHammingDistance = 1;
//LeftRight = 0;
//先利用4000对待识别图像进行长编码
int RetCoding = m_iCamIrisLib.CreateLongIrisCode(byImage, out iIrisCode);
if (RetCoding == 0)
{
//与右眼逐一比对
iRetval = m_iCamIrisLib.MatchByLongIrisCode(out iMatchNumber, (byte[])iIrisCode, m_byRight, m_IrisCodeCount * 3 * 2);
if (iRetval == 0 && iMatchNumber > 0)
{
m_iCamIrisLib.GetInformation(Constants.RECOGNITION_HD, out fHammingDistance);
//LeftRight = 2;
return iMatchNumber;
}
//如果右眼未匹配，再对左眼进行逐一比对
else
{
iRetval = m_iCamIrisLib.MatchByLongIrisCode(out iMatchNumber, iIrisCode, m_byLeft, m_IrisCodeCount * 3 * 2);
if (iRetval == 0 && iMatchNumber > 0)
{
m_iCamIrisLib.GetInformation(Constants.RECOGNITION_HD, out fHammingDistance);
//LeftRight = 1;
return iMatchNumber;
}
}
}
return 0;
}
}
}
