C#二维码识别

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.Threading;

namespace HDevQRTest.UIX64
{
    
    public partial class Form1 : Form
    {

        private SynchronizationContext _SynCtx = null;

        HTuple _FatherWindow =null;
        private bool _Enable = false;                           //正常测试线程停止标记
        public Form1()
        {
            InitializeComponent();
            //
            _FatherWindow = pictureBox1.Handle;
            _SynCtx = System.Threading.SynchronizationContext.Current;
        }

        public void Do()
        {
            try
            {
                #region
                // Local iconic variables 
                Console.WriteLine("任务启动!");
                HObject ho_Image = null, ho_SymbolXLDs = null;

                // Local control variables 
                HTuple hv_WindowHandle = null;
                HTuple hv_AcqHandle = null, hv_DataCodeHandle = null;
                HTuple hv_ResultHandles = new HTuple();
                HTuple hv_DecodedDataStrings = new HTuple();
                // Initialize local and output iconic variables 
                HOperatorSet.GenEmptyObj(out ho_Image);
                HOperatorSet.GenEmptyObj(out ho_SymbolXLDs);
                //Image Acquisition 01: Code generated by Image Acquisition 01
                //Image Acquisition 01: Attention: The initialization may fail in case parameters need to
                //Image Acquisition 01: be set in a specific order (e.g., image resolution vs. offset).
                HOperatorSet.OpenFramegrabber("GigEVision2", 0, 0, 0, 0, 0, 0, "progressive",
                    8, "rgb", -1, "false", "default", "c42f90f5f892_Hikvision_MVCA06010GC", 0,
                    -1, out hv_AcqHandle);
                HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "DeviceUserID", "");
                HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "RegionSelector", "Region0");
                HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "Width", 1280);
                HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "Height", 1280);
                HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "OffsetX", 952);
                HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "OffsetY", 684);
                HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "PixelFormat", "YUV422_8");
                HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "TestPattern", "Off");
                HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "AcquisitionMode", "Continuous");
                HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "AcquisitionBurstFrameCount",
                    1);
                HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "AcquisitionFrameRate", 7.4);
                HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "AcquisitionFrameRateEnable",
                    1);
                HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "ExposureMode", "Timed");
                HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "ExposureAuto", "Continuous");
                HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "TriggerSelector", "FrameBurstStart");
                HOperatorSet.GrabImageStart(hv_AcqHandle, -1);
                HOperatorSet.CreateDataCode2dModel("QR Code", new HTuple(), new HTuple(), out hv_DataCodeHandle);
                if (HDevWindowStack.IsOpen())
                {
                    HOperatorSet.CloseWindow(HDevWindowStack.Pop());
                }
                HOperatorSet.SetWindowAttr("background_color", "black");

                HOperatorSet.OpenWindow(0, 0, this.pictureBox1.Width, this.pictureBox1.Height, _FatherWindow, "visible", "", out hv_WindowHandle);

                HDevWindowStack.Push(hv_WindowHandle);
                #endregion
                while (_Enable)
                {
                    ho_Image.Dispose();
                    HOperatorSet.GrabImageAsync(out ho_Image, hv_AcqHandle, -1);
                    ho_SymbolXLDs.Dispose();
                    HOperatorSet.FindDataCode2d(ho_Image, out ho_SymbolXLDs, hv_DataCodeHandle,
                        new HTuple(), new HTuple(), out hv_ResultHandles, out hv_DecodedDataStrings);

                    #region 调整图像大小
                    HTuple width = null, height = null;

                    //获取图像大小
                    HOperatorSet.GetImageSize(ho_Image, out width, out height);


                    //通过改变图像的缩放来适应图像在窗口的正常显示
                    HOperatorSet.SetPart(hv_WindowHandle, 0, 0, height, width);


                    #endregion
                    if (HDevWindowStack.IsOpen())
                    {
                        //在窗口上显示图像
                        HOperatorSet.DispObj(ho_Image, HDevWindowStack.GetActive());
                    }
                    if (HDevWindowStack.IsOpen())
                    {
                        HOperatorSet.DispObj(ho_SymbolXLDs, HDevWindowStack.GetActive());
                    }
                    var code = hv_DecodedDataStrings.ToString();
                    if (!string.IsNullOrWhiteSpace(code) && code != "[]")
                    {
                        Console.WriteLine(string.Format("[{0}]读取条码:{1}", DateTime.Now, code));
                        _SynCtx.Post(o => { textBox1.Text = DateTime.Now.ToString("HH:mm:ss") + ":" + "
" + code; }, null);
                    }
                    //会报错，copy  hcanvas.dll后不报错，但是图片无法显示了
                    //disp_message(hv_WindowHandle, "读出的二维码是:" + hv_DecodedDataStrings, "window", 40, 12, "black", "true");
                    //Image Acquisition 01: Do something
                }
                HOperatorSet.ClearDataCode2dModel(hv_DataCodeHandle);
                HOperatorSet.CloseFramegrabber(hv_AcqHandle);


                ho_Image.Dispose();
                ho_SymbolXLDs.Dispose();

                _Enable = false;
                Console.WriteLine("任务停止");
            }
            catch (Exception ex)
            {
                _Enable = false;
                Console.WriteLine(ex.Message);
            }
        }

        // Chapter: Graphics / Text
        // Short Description: This procedure writes a text message. 
        public void disp_message(HTuple hv_WindowHandle, HTuple hv_String, HTuple hv_CoordSystem,
            HTuple hv_Row, HTuple hv_Column, HTuple hv_Color, HTuple hv_Box)
        {



            // Local iconic variables 

            // Local control variables 

            HTuple hv_GenParamName = null, hv_GenParamValue = null;
            HTuple hv_Color_COPY_INP_TMP = hv_Color.Clone();
            HTuple hv_Column_COPY_INP_TMP = hv_Column.Clone();
            HTuple hv_CoordSystem_COPY_INP_TMP = hv_CoordSystem.Clone();
            HTuple hv_Row_COPY_INP_TMP = hv_Row.Clone();

            // Initialize local and output iconic variables 
            //This procedure displays text in a graphics window.
            //
            //Input parameters:
            //WindowHandle: The WindowHandle of the graphics window, where
            //   the message should be displayed
            //String: A tuple of strings containing the text message to be displayed
            //CoordSystem: If set to 'window', the text position is given
            //   with respect to the window coordinate system.
            //   If set to 'image', image coordinates are used.
            //   (This may be useful in zoomed images.)
            //Row: The row coordinate of the desired text position
            //   A tuple of values is allowed to display text at different
            //   positions.
            //Column: The column coordinate of the desired text position
            //   A tuple of values is allowed to display text at different
            //   positions.
            //Color: defines the color of the text as string.
            //   If set to [], '' or 'auto' the currently set color is used.
            //   If a tuple of strings is passed, the colors are used cyclically...
            //   - if |Row| == |Column| == 1: for each new textline
            //   = else for each text position.
            //Box: If Box[0] is set to 'true', the text is written within an orange box.
            //     If set to' false', no box is displayed.
            //     If set to a color string (e.g. 'white', '#FF00CC', etc.),
            //       the text is written in a box of that color.
            //     An optional second value for Box (Box[1]) controls if a shadow is displayed:
            //       'true' -> display a shadow in a default color
            //       'false' -> display no shadow
            //       otherwise -> use given string as color string for the shadow color
            //
            //It is possible to display multiple text strings in a single call.
            //In this case, some restrictions apply:
            //- Multiple text positions can be defined by specifying a tuple
            //  with multiple Row and/or Column coordinates, i.e.:
            //  - |Row| == n, |Column| == n
            //  - |Row| == n, |Column| == 1
            //  - |Row| == 1, |Column| == n
            //- If |Row| == |Column| == 1,
            //  each element of String is display in a new textline.
            //- If multiple positions or specified, the number of Strings
            //  must match the number of positions, i.e.:
            //  - Either |String| == n (each string is displayed at the
            //                          corresponding position),
            //  - or     |String| == 1 (The string is displayed n times).
            //
            //
            //Convert the parameters for disp_text.
            if ((int)((new HTuple(hv_Row_COPY_INP_TMP.TupleEqual(new HTuple()))).TupleOr(
                new HTuple(hv_Column_COPY_INP_TMP.TupleEqual(new HTuple())))) != 0)
            {

                return;
            }
            if ((int)(new HTuple(hv_Row_COPY_INP_TMP.TupleEqual(-1))) != 0)
            {
                hv_Row_COPY_INP_TMP = 12;
            }
            if ((int)(new HTuple(hv_Column_COPY_INP_TMP.TupleEqual(-1))) != 0)
            {
                hv_Column_COPY_INP_TMP = 12;
            }
            //
            //Convert the parameter Box to generic parameters.
            hv_GenParamName = new HTuple();
            hv_GenParamValue = new HTuple();
            if ((int)(new HTuple((new HTuple(hv_Box.TupleLength())).TupleGreater(0))) != 0)
            {
                if ((int)(new HTuple(((hv_Box.TupleSelect(0))).TupleEqual("false"))) != 0)
                {
                    //Display no box
                    hv_GenParamName = hv_GenParamName.TupleConcat("box");
                    hv_GenParamValue = hv_GenParamValue.TupleConcat("false");
                }
                else if ((int)(new HTuple(((hv_Box.TupleSelect(0))).TupleNotEqual("true"))) != 0)
                {
                    //Set a color other than the default.
                    hv_GenParamName = hv_GenParamName.TupleConcat("box_color");
                    hv_GenParamValue = hv_GenParamValue.TupleConcat(hv_Box.TupleSelect(0));
                }
            }
            if ((int)(new HTuple((new HTuple(hv_Box.TupleLength())).TupleGreater(1))) != 0)
            {
                if ((int)(new HTuple(((hv_Box.TupleSelect(1))).TupleEqual("false"))) != 0)
                {
                    //Display no shadow.
                    hv_GenParamName = hv_GenParamName.TupleConcat("shadow");
                    hv_GenParamValue = hv_GenParamValue.TupleConcat("false");
                }
                else if ((int)(new HTuple(((hv_Box.TupleSelect(1))).TupleNotEqual("true"))) != 0)
                {
                    //Set a shadow color other than the default.
                    hv_GenParamName = hv_GenParamName.TupleConcat("shadow_color");
                    hv_GenParamValue = hv_GenParamValue.TupleConcat(hv_Box.TupleSelect(1));
                }
            }
            //Restore default CoordSystem behavior.
            if ((int)(new HTuple(hv_CoordSystem_COPY_INP_TMP.TupleNotEqual("window"))) != 0)
            {
                hv_CoordSystem_COPY_INP_TMP = "image";
            }
            //
            if ((int)(new HTuple(hv_Color_COPY_INP_TMP.TupleEqual(""))) != 0)
            {
                //disp_text does not accept an empty string for Color.
                hv_Color_COPY_INP_TMP = new HTuple();
            }
            //
            HOperatorSet.DispText(hv_WindowHandle, hv_String, hv_CoordSystem_COPY_INP_TMP,
                hv_Row_COPY_INP_TMP, hv_Column_COPY_INP_TMP, hv_Color_COPY_INP_TMP, hv_GenParamName,
                hv_GenParamValue);

            return;
        }
        private void Form1_Load(object sender, EventArgs e)
        {

        }
        protected override void OnClosed(EventArgs e)
        {
            if (_Enable)
            {
                _Enable = false;
                Thread.Sleep(1000 * 3);
            }
            base.OnClosed(e);
        }
        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                _Enable = true;
                ThreadPool.QueueUserWorkItem(o => { Do(); }, null);
                button1.Enabled = false;
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
                
        }

        private void button2_Click(object sender, EventArgs e)
        {
            try
            {
                if (!_Enable)
                {
                    throw new Exception("任务未启动!");
                }
                _Enable = false;
                Console.WriteLine("停止任务...");
                button1.Enabled = true;
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }

        }
    }
}

//会报错，copy hcanvas.dll后不报错，但是图片无法显示了
//disp_message(hv_WindowHandle,.....

相机参数注意调整成连爆光，图片尺寸设置小点这样不卡，另外设置图片中心参数（其他部分会被忽略）图片中心选择镜头畸变小的地方

另外那个USB相机采用的是directShow驱动，注意区别

open_framegrabber ('GigEVision2', 0, 0, 0, 0, 0, 0, 'progressive', 8, 'rgb', -1, 'false', 'default', 'c42f90f5f892_Hikvision_MVCA06010GC', 0, -1, AcqHandle)
set_framegrabber_param (AcqHandle, 'DeviceUserID', '')
set_framegrabber_param (AcqHandle, 'RegionSelector', 'Region0')
set_framegrabber_param (AcqHandle, 'Width', 1280)
set_framegrabber_param (AcqHandle, 'Height', 1280)
set_framegrabber_param (AcqHandle, 'OffsetX', 952)
set_framegrabber_param (AcqHandle, 'OffsetY', 684)
set_framegrabber_param (AcqHandle, 'PixelFormat', 'YUV422_8')
set_framegrabber_param (AcqHandle, 'TestPattern', 'Off')
set_framegrabber_param (AcqHandle, 'AcquisitionMode', 'Continuous')
set_framegrabber_param (AcqHandle, 'AcquisitionBurstFrameCount', 1)
set_framegrabber_param (AcqHandle, 'AcquisitionFrameRate', 7.4)
set_framegrabber_param (AcqHandle, 'AcquisitionFrameRateEnable', 1)
set_framegrabber_param (AcqHandle, 'ExposureMode', 'Timed')
set_framegrabber_param (AcqHandle, 'ExposureAuto', 'Continuous')
set_framegrabber_param (AcqHandle, 'TriggerSelector', 'FrameBurstStart')
grab_image_start (AcqHandle, -1)
create_data_code_2d_model ('QR Code', [], [], DataCodeHandle)
dev_close_window()
dev_open_window(0,0,1280,1280,'black',WindowHandle)
while (true)
    grab_image_async (Image, AcqHandle, -1)
    find_data_code_2d (Image, SymbolXLDs, DataCodeHandle, [], [], ResultHandles, DecodedDataStrings)
    dev_display (Image)
    dev_display (SymbolXLDs)
     disp_message (WindowHandle, '读出的二维码是:'+DecodedDataStrings, 'window', 40, 12, 'black', 'true')
    * Image Acquisition 01: Do something
endwhile
clear_data_code_2d_model (DataCodeHandle)
close_framegrabber (AcqHandle)

 发布后发现还是运行不了，于是拿安装包装了Halcon的runtime，然后正常了