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") + ":" + "\r\n" + 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
