海康摄像头车牌识

danny_2020

于 2023-06-19 09:47:24 发布

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CC 4.0 BY-SA版权

文章标签： java 开发语言

本文链接：https://blog.youkuaiyun.com/danny_2020/article/details/131281235

该代码段是一个处理车牌识别结果的函数，主要功能包括从输入参数中获取车牌信息，进行数据转换，调用委托显示识别数据，并存储图片。函数首先检查退出标志，然后获取车牌模型数据，如果找到，更新车牌号。接着，它将数据解构为特定的结构体，处理车款信息，并通过委托更新界面显示。最后，函数会根据图片数据长度存储全景图和车牌图。

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public void on_plate(string bstrIP, string bstrNumber, string bstrColor, IntPtr vPicData, UInt32 nPicLen,
IntPtr vCloseUpPicData, UInt32 nCloseUpPicLen, short nSpeed, short nVehicleType, short nReserved1, short nReserved2, Single fPlateConfidence,
UInt32 nVehicleColor, UInt32 nPlateType, UInt32 nVehicleDir, UInt32 nAlarmType, UInt32 nCapTime, Int32 index, uint u32ResultHigh, uint u32ResultLow)
{
if (m_bExit)
return;
WeighData_Info mWeighData_Info = Helpers.ServiceHelper.msClient.GetWeighDataModel(string.Format(" Licenseplate like '%{0}%'", bstrNumber.Substring(1)));
if (null != mWeighData_Info)
bstrNumber = mWeighData_Info.Licenseplate;
#if VERSION32
IntPtr vdcPtr = (IntPtr)u32ResultLow;
#else
ulong tmp = ((ulong)u32ResultHigh << 32) + (ulong)u32ResultLow;
IntPtr vdcPtr = (IntPtr)tmp;
#endif
string Licenseplate = UserHelper.GetTableLicenseplate(bstrNumber.Substring(1));
if (string.Empty != Licenseplate) bstrNumber = Licenseplate;
if (vdcPtr != IntPtr.Zero)
{
//将数据拷贝到ICE_VDC_PICTRUE_INFO_S结构体
vdcInfo = (ICE_VDC_PICTRUE_INFO_S)Marshal.PtrToStructure(vdcPtr, typeof(ICE_VDC_PICTRUE_INFO_S));

//获得车款结构体指针，并拷贝
if (vdcInfo.pstVbrResult != IntPtr.Zero)
{
vbrResult = (ICE_VBR_RESULT_S)Marshal.PtrToStructure(vdcInfo.pstVbrResult, typeof(ICE_VBR_RESULT_S));
if (vbrResult.szLogName.Length == 0)
vbrResult.szLogName = "未知";

//委托，用于显示识别数据(showCount),vdcInfo.stPlateInfo表示车牌信息
if ((this == null) || (this.IsDisposed) || (!this.IsHandleCreated)) return;
this.BeginInvoke(updatePlateInfo, bstrIP, bstrNumber, bstrColor,
nVehicleColor, nAlarmType, nVehicleType, nCapTime, index, vbrResult.szLogName, vdcInfo.stPlateInfo.stPlateRect);
}
else
{
if ((this == null) || (this.IsDisposed) || (!this.IsHandleCreated)) return;
this.BeginInvoke(updatePlateInfo, bstrIP, bstrNumber, bstrColor,
nVehicleColor, nAlarmType, nVehicleType, nCapTime, index, "", vdcInfo.stPlateInfo.stPlateRect);//委托，用于显示识别数据(showCount),vdcInfo.stPlateInfo表示车牌信息
}
}
else
{
if ((this == null) || (this.IsDisposed) || (!this.IsHandleCreated)) return;
this.BeginInvoke(updatePlateInfo, bstrIP, bstrNumber, bstrColor,
nVehicleColor, nAlarmType, nVehicleType, nCapTime, index, "", null);//委托，用于显示识别数据(showCount)
}
if (nPicLen > 0)//全景图数据长度不为0
{
IntPtr ptr2 = (IntPtr)vPicData;
byte[] datajpg2 = new byte[nPicLen];
Marshal.Copy(ptr2, datajpg2, 0, datajpg2.Length);//拷贝图片数据
//存图
if (vdcInfo.pstVbrResult != IntPtr.Zero)
storePic(datajpg2, bstrIP, bstrNumber, false, nCapTime, vbrResult.fResFeature, vbrResult.szLogName);
else
storePic(datajpg2, bstrIP, bstrNumber, false, nCapTime, null, "");
}

if (nCloseUpPicLen > 0)//车牌图数据长度不为0
{
IntPtr ptr = (IntPtr)vCloseUpPicData;
byte[] datajpg = new byte[nCloseUpPicLen];
Marshal.Copy(ptr, datajpg, 0, datajpg.Length);//拷贝图片数据
//存图
if (vdcInfo.pstVbrResult != IntPtr.Zero)
storePic(datajpg, bstrIP, bstrNumber, true, nCapTime, null, vbrResult.szLogName);
else
storePic(datajpg, bstrIP, bstrNumber, true, nCapTime, null, "");
}
}