Barcode.cs
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using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using HalconDotNet;
using CameraVisionLib.Model;
namespace Asa.Barcode
{
/// <summary>
/// 条码识别，1DBarcode、2DBarcode
/// </summary>
internal class Identify
{
private ScanParam scanParam;
/// <summary>
/// 条码识别，1DBarcode、2DBarcode
/// </summary>
/// <param name="param"></param>
public Identify(ScanParam param)
{
scanParam = param;
}
/// <summary>
/// 获取条码
/// </summary>
/// <param name="image"></param>
/// <returns></returns>
public List<BarcodeInfo> GetCode(Bitmap image)
{
List<BarcodeInfo> code = new();
if (image == null) return code;
switch (scanParam.CodeOrder)
{
case ScanCodeOrder.HalconOnly:
code.AddRange(HalconGetCode(image));
break;
case ScanCodeOrder.EyemLibOnly:
code.AddRange(EyemGetCode(image));
break;
case ScanCodeOrder.HalconEyemLib:
code.AddRange(HalconGetCode(image));
if (code.Count == 0) code.AddRange(EyemGetCode(image));
break;
case ScanCodeOrder.EyemLibHalcon:
code.AddRange(EyemGetCode(image));
if (code.Count == 0) code.AddRange(HalconGetCode(image));
break;
}
return code;
}
private List<BarcodeInfo> HalconGetCode(Bitmap image)
{
List<BarcodeInfo> code = new();
Bitmap bmp = new(image); //防止原图被释放
switch (scanParam.HalconType)
{
case CodeType.All:
code.AddRange(HalconExtract1DCode(bmp, scanParam.Zoom1D));
code.AddRange(HalconExtract2DCode(bmp, scanParam.Zoom2D));
break;
case CodeType.Barcode1D:
code.AddRange(HalconExtract1DCode(bmp, scanParam.Zoom1D));
break;
case CodeType.Barcode2D:
code.AddRange(HalconExtract2DCode(bmp, scanParam.Zoom2D));
break;
}
return code;
}
private List<BarcodeInfo> EyemGetCode(Bitmap image)
{
List<BarcodeInfo> code = new();
string tempPath = AppDomain.CurrentDomain.BaseDirectory + string.Format("Img{0:yyyy_MM_dd HH_mm_ss}.png", DateTime.Now);
image.Save(tempPath, ImageFormat.Png);
switch (scanParam.EyemType)
{
case CodeType.All:
code.AddRange(EyemExtractCode(tempPath, "CODE_128|CODE_39|CODE_93", scanParam.EyemBlockSize, scanParam.EyemRangeC, scanParam.EyemSymbolMin, scanParam.EyemSymbolMax));
code.AddRange(EyemExtractCode(tempPath, "QR_CODE|DATA_MATRIX", scanParam.EyemBlockSize, scanParam.EyemRangeC, scanParam.EyemSymbolMin, scanParam.EyemSymbolMax));
break;
case CodeType.Barcode1D:
code.AddRange(EyemExtractCode(tempPath, "CODE_128|CODE_39|CODE_93", scanParam.EyemBlockSize, scanParam.EyemRangeC, scanParam.EyemSymbolMin, scanParam.EyemSymbolMax));
break;
case CodeType.Barcode2D:
code.AddRange(EyemExtractCode(tempPath, "QR_CODE|DATA_MATRIX", scanParam.EyemBlockSize, scanParam.EyemRangeC, scanParam.EyemSymbolMin, scanParam.EyemSymbolMax));
break;
}
System.IO.File.Delete(tempPath);
return code;
}
private List<BarcodeInfo> HalconExtract1DCode(Bitmap bmp, float zoom)
{
List<BarcodeInfo> codeInfo = new();
//图像转成halcon的类型
BitmapData bmpData = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
HObject hObj;
try
{
HOperatorSet.GenImageInterleaved(out hObj, bmpData.Scan0, "bgr", bmp.Width, bmp.Height, 0, "byte", 0, 0, 0, 0, -1, 0);
if (zoom != 1)
HOperatorSet.ZoomImageFactor(hObj, out hObj, zoom, zoom, "bilinear");
bmp.UnlockBits(bmpData);
}
catch (Exception ex)
{
bmp.UnlockBits(bmpData);
Common.log.Error("Extract1DCode", ex);
return codeInfo;
}
try
{
HOperatorSet.Rgb1ToGray(hObj, out HObject grayImage);
HOperatorSet.CreateBarCodeModel(new HTuple(), new HTuple(), out HTuple hv_BarCode); //创建条码模型
HOperatorSet.SetBarCodeParam(hv_BarCode, "num_scanlines", 5); //扫描线的最大数量
HOperatorSet.SetBarCodeParam(hv_BarCode, "min_identical_scanlines", 3); //成功解码最少扫描线数量
HOperatorSet.SetBarCodeParam(hv_BarCode, "start_stop_tolerance", "high"); //扫描线的起点和终点的容许误差，high误差大，low误差小
HOperatorSet.SetBarCodeParam(hv_BarCode, "max_diff_orient", 5); //条码相邻两条竖条边缘扭曲的最大角度容差
HOperatorSet.FindBarCode(grayImage, out HObject symbolRegions, hv_BarCode, "auto", out HTuple hv_String); //寻找条码
HOperatorSet.GetBarCodeResult(hv_BarCode, "all", "decoded_types", out HTuple hv_Type); //获取条码类型
HOperatorSet.GetBarCodeResult(hv_BarCode, "all", "orientation", out HTuple hv_Orientation); //获取条码方向，x轴逆时针[0,180]，顺时针[0,-180]
HOperatorSet.SmallestRectangle2(symbolRegions, out HTuple row, out HTuple column, out HTuple phi, out HTuple length1, out HTuple length2);
HOperatorSet.ClearBarCodeModel(hv_BarCode); //清除条码模型
Common.log.Info("Halcon Extract1DCode Count=" + hv_String.Length);
if (hv_String.Length > 0)
{
int n = hv_String.SArr.Length;
for (int i = 0; i < n; i++)
{
BarcodeInfo info = new()
{
Text = hv_String.SArr[i].Trim(),
CodeType = hv_Type.SArr[i],
Angle = Convert.ToSingle(hv_Orientation.DArr[i]),
Center = new PointF(Convert.ToSingle(column.DArr[i] / zoom), Convert.ToSingle(row.DArr[i] / zoom)),
Size = new SizeF(Convert.ToSingle(length1.DArr[i] * 2), Convert.ToSingle(length2.DArr[i] * 2))
};
double tan = Math.Tan(AngleToRadian(0 - info.Angle));
info.Distance = Convert.ToSingle(Math.Abs((tan * info.Center.X - info.Center.Y) / Math.Sqrt(tan * tan + 1)));
codeInfo.Add(info);
}
}
}
catch (Exception ex)
{
Common.log.Error("Extract1DCode", ex);
}
return codeInfo;
}
private List<BarcodeInfo> HalconExtract2DCode(Bitmap bmp, float zoom)
{
List<BarcodeInfo> codeInfo = new();
//图像转成halcon的类型
BitmapData bmpData = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
HObject hObj;
try
{
HOperatorSet.GenImageInterleaved(out hObj, bmpData.Scan0, "bgr", bmp.Width, bmp.Height, 0, "byte", 0, 0, 0, 0, -1, 0);
if (zoom != 1)
HOperatorSet.ZoomImageFactor(hObj, out hObj, zoom, zoom, "bilinear");
bmp.UnlockBits(bmpData);
}
catch (Exception ex)
{
bmp.UnlockBits(bmpData);
Common.log.Error("Extract2DCode", ex);
return codeInfo;
}
string[] type = new string[] { "Data Matrix ECC 200", "QR Code", "PDF417" };
try
{
for (int i = 0; i < type.Length; i++)
{
HOperatorSet.Rgb1ToGray(hObj, out HObject grayImage);
//支持‘Data Matrix ECC 200’、‘QR Code’和‘PDF417’共3种类型
//‘standard_recognition’、‘enhanced_recognition’、‘maximum_recognition’
HOperatorSet.CreateDataCode2dModel(type[i], "default_parameters", "maximum_recognition", out HTuple dataCodeHandle);
HOperatorSet.SetDataCode2dParam(dataCodeHandle, "timeout", 1000); //一个二维码的解码时间
//HOperatorSet.SetDataCode2dParam(dataCodeHandle, "symbol_size_min", 16); //码粒最小个数
//HOperatorSet.SetDataCode2dParam(dataCodeHandle, "symbol_size_max", 30); //码粒最大个数
if (i != 2)
{
HOperatorSet.SetDataCode2dParam(dataCodeHandle, "module_size_min", 3); //码粒最小像素
HOperatorSet.SetDataCode2dParam(dataCodeHandle, "module_size_max", 20); //码粒最大像素
}
HOperatorSet.FindDataCode2d(grayImage, out HObject symbolXLDs, dataCodeHandle, "stop_after_result_num", 5, out HTuple resultHandles, out HTuple decodedDataStrings);
//码粒的个数
HOperatorSet.GetDataCode2dResults(dataCodeHandle, "all_results", "symbol_rows", out HTuple _rows);
HOperatorSet.GetDataCode2dResults(dataCodeHandle, "all_results", "symbol_cols", out HTuple _cols);
//每个码粒的宽高
HOperatorSet.GetDataCode2dResults(dataCodeHandle, "all_results", "module_height", out HTuple _height);
HOperatorSet.GetDataCode2dResults(dataCodeHandle, "all_results", "module_width", out HTuple _width);
HOperatorSet.AreaCenterXld(symbolXLDs, out HTuple hv_Area, out HTuple hv_Row, out HTuple hv_Column, out HTuple hv_PointOrder);
//释放
HOperatorSet.ClearDataCode2dModel(dataCodeHandle);
Common.log.Info("Halcon Extract2DCode " + type[i] + " Count=" + decodedDataStrings.Length);
if (decodedDataStrings.Length > 0)
{
int n = decodedDataStrings.SArr.Length;
for (int j = 0; j < n; j++)
{
BarcodeInfo info = new()
{
Text = decodedDataStrings.SArr[j].Trim(),
CodeType = type[j],
Angle = 0,
Center = new PointF(Convert.ToSingle(hv_Column.DArr[j] / zoom), Convert.ToSingle(hv_Row.DArr[j] / zoom)),
Size = new SizeF(Convert.ToSingle(_cols.LArr[j] * _width.DArr[j]), Convert.ToSingle(_rows.LArr[j] * _height.DArr[j])),
Distance = 0
};
codeInfo.Add(info);
}
}
}
}
catch (Exception ex)
{
Common.log.Error("Extract2DCode", ex);
}
return codeInfo;
}
private unsafe List<BarcodeInfo> EyemExtractCode(string file, string codeType, int iBlockSize, int iRangeC, int iSymbolMin, int iSymbolMax)
{
List<BarcodeInfo> codeInfo = new();
BarcodeAPI.DataCodeHandle hObject = null;
BarcodeAPI.EyemImage tpImage;
tpImage.ucpImage = IntPtr.Zero;
try
{
int rtn = BarcodeAPI.eyemImageRead(file, 3, out tpImage);
BarcodeAPI.EyemRect tpRoi = new()
{
iXs = 0,
iYs = 0,
iWidth = tpImage.iWidth,
iHeight = tpImage.iHeight
};
string ext = System.IO.Path.GetExtension(file);
file = file.Substring(0, file.Length - ext.Length);
int result = BarcodeAPI.eyemDetectAndDecode(tpImage, tpRoi, file, codeType,
out hObject, out BarcodeAPI.EyemBarCode* tpResults, out int ipNum, false, iBlockSize, iRangeC, iSymbolMin, iSymbolMax, 1d);
if (result != 0 || ipNum == 0)
{
Common.log.Info("EyemExtractCode " + codeType + " result=" + result + " ipNum=" + ipNum);
return codeInfo;
}
Common.log.Info("EyemExtractCode " + codeType + " Count=" + ipNum);
for (int i = 0; i < ipNum; i++)
{
BarcodeInfo info = new()
{
Text = System.Runtime.InteropServices.Marshal.PtrToStringAnsi(tpResults[i].hText).Trim(),
CodeType = System.Runtime.InteropServices.Marshal.PtrToStringAnsi(tpResults[i].hType).Trim(),
Angle = Convert.ToSingle(tpResults[i].dAngle) + 180,
Center = new PointF(tpResults[i].iCenterX, tpResults[i].iCenterY),
Size = new SizeF(0, 0)
};
double tan = Math.Tan(AngleToRadian(0 - info.Angle));
info.Distance = Convert.ToSingle(Math.Abs((tan * info.Center.X - info.Center.Y) / Math.Sqrt(tan * tan + 1)));
codeInfo.Add(info);
}
}
catch (Exception ex)
{
Common.log.Error("EyemExtractCode", ex);
}
finally
{
if (hObject != null)
hObject.Dispose();
if (file != null)
BarcodeAPI.eyemImageFree(tpImage.ucpImage);
}
return codeInfo;
}
private double AngleToRadian(float angle)
{
//角度转弧度
return angle * Math.PI / 180;
}
}
}