halcon与C#混合编程（三）数字识别

示例：数字识别

要识别的图片：

halcon源码：

*读取图片
read_image(Image,'D:/MyFile/halcon/数字识别/1.jpg')

*图像处理
decompose3(Image, ImageR, ImageG, ImageB)
threshold (ImageG, Regions, 0, 183)
connection (Regions, Connection)

select_shape (Connection, SelectedRegions, 'area', 'and', 1987.72, 7500)

read_ocr_class_mlp('Document_0-9.omc',OCRHandle)
do_ocr_multi_class_mlp(SelectedRegions,ImageG,OCRHandle, Class, Confidence)

halcon导出的C#代码：

//
//  File generated by HDevelop for HALCON/DOTNET (C#) Version 10.0
//
//  This file is intended to be used with the HDevelopTemplate or
//  HDevelopTemplateWPF projects located under %HALCONEXAMPLES%\c#

using System;
using HalconDotNet;

public partial class HDevelopExport
{
  public HTuple hv_ExpDefaultWinHandle;

  // Main procedure
  private void action()
  {

    // Local iconic variables

    HObject ho_Image, ho_ImageR, ho_ImageG, ho_ImageB;
    HObject ho_Regions, ho_Connection, ho_SelectedRegions;


    // Local control variables

    HTuple hv_OCRHandle, hv_Class, hv_Confidence;

    // Initialize local and output iconic variables
    HOperatorSet.GenEmptyObj(out ho_Image);
    HOperatorSet.GenEmptyObj(out ho_ImageR);
    HOperatorSet.GenEmptyObj(out ho_ImageG);
    HOperatorSet.GenEmptyObj(out ho_ImageB);
    HOperatorSet.GenEmptyObj(out ho_Regions);
    HOperatorSet.GenEmptyObj(out ho_Connection);
    HOperatorSet.GenEmptyObj(out ho_SelectedRegions);

    //读取图片
    ho_Image.Dispose();
    HOperatorSet.ReadImage(out ho_Image, "D:/MyFile/halcon/数字识别/1.jpg");

    //图像处理
    ho_ImageR.Dispose();
    ho_ImageG.Dispose();
    ho_ImageB.Dispose();
    HOperatorSet.Decompose3(ho_Image, out ho_ImageR, out ho_ImageG, out ho_ImageB
        );
    ho_Regions.Dispose();
    HOperatorSet.Threshold(ho_ImageG, out ho_Regions, 0, 183);
    ho_Connection.Dispose();
    HOperatorSet.Connection(ho_Regions, out ho_Connection);

    ho_SelectedRegions.Dispose();
    HOperatorSet.SelectShape(ho_Connection, out ho_SelectedRegions, "area", "and",
        1987.72, 7500);

    HOperatorSet.ReadOcrClassMlp("Document_0-9.omc", out hv_OCRHandle);
    HOperatorSet.DoOcrMultiClassMlp(ho_SelectedRegions, ho_ImageG, hv_OCRHandle,
        out hv_Class, out hv_Confidence);

    ho_Image.Dispose();
    ho_ImageR.Dispose();
    ho_ImageG.Dispose();
    ho_ImageB.Dispose();
    ho_Regions.Dispose();
    ho_Connection.Dispose();
    ho_SelectedRegions.Dispose();

  }

  public void InitHalcon()
  {
    // Default settings used in HDevelop
    HOperatorSet.SetSystem("do_low_error", "false");
  }

  public void RunHalcon(HTuple Window)
  {
    hv_ExpDefaultWinHandle = Window;
    action();
  }

}

C#工程：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using HalconDotNet;


namespace NumericalRecognition
{
    public partial class FormMain : Form
    {
        //增加代码：
        HDevelopExport HD = new HDevelopExport();
        string ImagePath;

        public FormMain()
        {
            InitializeComponent();
            btnRecognitionNumber.Enabled = false;
        }

        private void btnOpenImage_Click(object sender, EventArgs e)
        {
            openFileDialog1.Filter = "JPEG文件|*.jpg*|BMP文件|*.bmp*|TIFF文件|*.tiff*";

            openFileDialog1.RestoreDirectory = true;

            openFileDialog1.FilterIndex = 1;

            if (openFileDialog1.ShowDialog() == DialogResult.OK)

            {

                ImagePath = openFileDialog1.FileName;

                HD.ReadImage(hWindowControl1.HalconWindow, ImagePath);

                btnRecognitionNumber.Enabled = true;

            }
        }

        private void btnRecognitionNumber_Click(object sender, EventArgs e)
        {
            HD.NumberRecognition();
            labNumber.Text = HD.hv_Class.ToString();

            btnRecognitionNumber.Enabled = false;
        }
    }

    //halcon导出的类
    public partial class HDevelopExport
    {
        public HTuple hv_ExpDefaultWinHandle;

        HObject ho_Image, ho_ImageR, ho_ImageG, ho_ImageB;
        HObject ho_Regions, ho_Connection, ho_SelectedRegions;


        // Local control variables
        HTuple hv_OCRHandle,  hv_Confidence;
        public HTuple hv_Class;

        public void InitHalcon()
        {
            // Default settings used in HDevelop
            HOperatorSet.SetSystem("do_low_error", "false");
        }

        public void ReadImage(HTuple Window,string ImagePath)
        {
            hv_ExpDefaultWinHandle = Window;

            // Initialize local and output iconic variables
            HOperatorSet.GenEmptyObj(out ho_Image);

            //读取图片
            ho_Image.Dispose();
            HOperatorSet.ReadImage(out ho_Image, ImagePath);
            HOperatorSet.DispObj(ho_Image, hv_ExpDefaultWinHandle);
        }

        public void NumberRecognition()
        {
            HOperatorSet.GenEmptyObj(out ho_ImageR);
            HOperatorSet.GenEmptyObj(out ho_ImageG);
            HOperatorSet.GenEmptyObj(out ho_ImageB);
            HOperatorSet.GenEmptyObj(out ho_Regions);
            HOperatorSet.GenEmptyObj(out ho_Connection);
            HOperatorSet.GenEmptyObj(out ho_SelectedRegions);
            //图像处理
            ho_ImageR.Dispose();
            ho_ImageG.Dispose();
            ho_ImageB.Dispose();
            HOperatorSet.Decompose3(ho_Image, out ho_ImageR, out ho_ImageG, out ho_ImageB
                );
            ho_Regions.Dispose();
            HOperatorSet.Threshold(ho_ImageG, out ho_Regions, 0, 183);
            ho_Connection.Dispose();
            HOperatorSet.Connection(ho_Regions, out ho_Connection);

            ho_SelectedRegions.Dispose();
            HOperatorSet.SelectShape(ho_Connection, out ho_SelectedRegions, "area", "and",
                1987.72, 7500);

            HOperatorSet.ReadOcrClassMlp("Document_0-9.omc", out hv_OCRHandle);
            HOperatorSet.DoOcrMultiClassMlp(ho_SelectedRegions, ho_ImageG, hv_OCRHandle,
                out hv_Class, out hv_Confidence);


            ho_Image.Dispose();
            ho_ImageR.Dispose();
            ho_ImageG.Dispose();
            ho_ImageB.Dispose();
            ho_Regions.Dispose();
            ho_Connection.Dispose();
            ho_SelectedRegions.Dispose();

        }

    }
}

运行结果：