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   源码介绍

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基于halcon的二维码识别实例

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;
using System.IO;

namespace Halcon2
{
    public partial class Form1 : Form
    {
        HDevelop HD = new HDevelop();
        bool Add = false;
        public Form1()
        {
            InitializeComponent();
        }

        private void btn_Disp_Click(object sender, EventArgs e)
        {
            string Fname = null;
       
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                double P_Heigth = 0.00;
                double P_Width = 0.00;

                Fname = openFileDialog1.FileName;
                bool falg = HD.ImageReadShow(hWindowControl1.HalconWindow, Fname, out P_Heigth, out P_Width);
                txt_higth.Text = P_Heigth.ToString();
                txt_width.Text = P_Width.ToString();
                Add = true;
                this.btn_pro.Enabled = true;
                this.btn_save.Enabled = false;
            }
            else
            {
                MessageBox.Show("请选择正确的图片格式！");
            }
        }

        private void btn_pro_Click(object sender, EventArgs e)
        {
            if (Add)
            {
                HTuple QR = "";
                bool falg1 = HD.ImagePro(out QR);
                if (falg1)
                {
                    lab_QR.Text = QR;
                    this.btn_pro.Enabled = false;
                    this.btn_save.Enabled = true;
                }
                else
                {
                    MessageBox.Show("识别失败！");
                }

            }
            else
            {
                MessageBox.Show("请先加载图片！");
            }
            
        }

        private void btn_save_Click(object sender, EventArgs e)
        {
            if (Add)
            {
                SaveFileDialog SaveNew = new SaveFileDialog();
                SaveNew.Filter = "JPEG文件|*.jpg*|BMP文件|*.bmp*|TIFF文件|*.tiff*";
                if (SaveNew.ShowDialog() == DialogResult.OK)
                {
                    string Npath = SaveNew.FileName;
                    HD.ImageSave(Npath);
                    MessageBox.Show("保存成功！");
                    Add = false;
                    this.btn_pro.Enabled = false;
                }
            }
            else
            {
                MessageBox.Show("请先加载图片！");
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            timer1.Start();
            this.btn_pro.Enabled = false;
            this.btn_save.Enabled = false;
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            this.lab_time.Text = DateTime.Now.ToString("HH:mm:ss");
        }

    }
    public partial class HDevelop
    {
        HObject ho_image, ho_ImagereGray,ho_result;
        public HTuple hv_wihandle;
        public HTuple hlBarCodeHandle=null, hResultHandle=null;
        public HTuple szChar = "";

        public bool ImageReadShow(HTuple Window, string path, out double P_Heigth, out double P_Width)
        {
            hv_wihandle = Window;

            HTuple hv_Width = null, hv_Heigth = null;
            HOperatorSet.ReadImage(out ho_image, path);
            HOperatorSet.GetImageSize(ho_image, out hv_Width, out hv_Heigth);

            P_Heigth = hv_Heigth;
            P_Width = hv_Width;

            HOperatorSet.SetPart(hv_wihandle, 0, 0, hv_Heigth   1, hv_Width   1);
            HOperatorSet.DispObj(ho_image, hv_wihandle);
            return true;
        }
        public bool ImagePro(out HTuple szChar)
        {
            szChar="";
            HOperatorSet.Rgb1ToGray(ho_image, out ho_ImagereGray);
            //HOperatorSet.Emphasize(ho_image, out ho_ImagereGray,7,7,5.0);
            //HOperatorSet.Threshold(ho_ImagereGray, out ho_result, 2, 8);
            HOperatorSet.DispObj(ho_ImagereGray, hv_wihandle);
            for (int i = 0; i < 15; i  )
            {
                HOperatorSet.CreateDataCode2dModel("QR Code", "default_parameters", "maximum_recognition", out hv_wihandle);
                HOperatorSet.FindDataCode2d(ho_ImagereGray, out ho_result, hv_wihandle, "train", "all", out hResultHandle, out szChar);
                //MessageBox.Show(szChar);
            }

            if(szChar.Length == 0)
            {
                return false;
                ho_image.Dispose();
                ho_ImagereGray.Dispose();
            }
            else
            {
                return true;
            }
        }
        public void ImageSave(string filename)
        {
            HOperatorSet.WriteImage(ho_ImagereGray,"jpg",0,filename);
            ho_image.Dispose();
            ho_ImagereGray.Dispose();
        }

    }
}