00. 目錄

文章目錄

• • 00. 目錄
  • 01. 概述
  • 02. 編寫Halcon程序
  • 03. Halcon程序導出C++文件
  • 04. 創建Qt圖形界面項目
  • 05. Qt集成Halcon程序
  • 06. 附錄

01. 概述

QT與Halcon聯合編程。將Halcon中代碼集成到Qt程序中。

開發環境

Qt：Qt5.15.2

Halcon: Halcon 19.11

02. 編寫Halcon程序

程序示例

* 從本地磁盤讀取一張圖片 read_image (Carb, 'E:/CarB.jpg')* 獲取圖片大小 get_image_size (Carb, Width, Height)* 關閉當前窗口 dev_close_window ()* 打開新窗口 dev_open_window (0, 0, Width / 2, Height / 2, 'black', WindowHandle)* 顯示圖片 dev_display (Carb)

Halcon中執行結果

03. Halcon程序導出C++文件

3.1選擇文件中導出菜單

3.2 設置導出文件和格式，然后導出

3.3 導出源文件程序如下

/// // File generated by HDevelop for HALCON/C++ Version 19.11.0.0 // Non-ASCII strings in this file are encoded in local-8-bit encoding (cp936). // Ensure that the interface encoding is set to locale encoding by calling // SetHcppInterfaceStringEncodingIsUtf8(false) at the beginning of the program. // // Please note that non-ASCII characters in string constants are exported // as octal codes in order to guarantee that the strings are correctly // created on all systems, independent on any compiler settings. // // Source files with different encoding should not be mixed in one project. ///#ifndef __APPLE__ # include "HalconCpp.h" # include "HDevThread.h" #else # ifndef HC_LARGE_IMAGES # include <HALCONCpp/HalconCpp.h> # include <HALCONCpp/HDevThread.h> # include <HALCON/HpThread.h> # else # include <HALCONCppxl/HalconCpp.h> # include <HALCONCppxl/HDevThread.h> # include <HALCONxl/HpThread.h> # endif # include <stdio.h> # include <CoreFoundation/CFRunLoop.h> #endifusing namespace HalconCpp;#ifndef NO_EXPORT_MAIN // Main procedure void action() {// Local iconic variablesHObject ho_Carb;// Local control variablesHTuple hv_Width, hv_Height, hv_WindowHandle;//從本地磁盤讀取一張圖片ReadImage(&ho_Carb, "E:/CarB.jpg");//獲取圖片大小GetImageSize(ho_Carb, &hv_Width, &hv_Height);//關閉當前窗口if (HDevWindowStack::IsOpen())CloseWindow(HDevWindowStack::Pop());//打開新窗口SetWindowAttr("background_color","black");OpenWindow(0,0,hv_Width/2,hv_Height/2,0,"visible","",&hv_WindowHandle);HDevWindowStack::Push(hv_WindowHandle);//顯示圖片if (HDevWindowStack::IsOpen())DispObj(ho_Carb, HDevWindowStack::GetActive());}#ifndef NO_EXPORT_APP_MAIN#ifdef __APPLE__ // On OS X systems, we must have a CFRunLoop running on the main thread in // order for the HALCON graphics operators to work correctly, and run the // action function in a separate thread. A CFRunLoopTimer is used to make sure // the action function is not called before the CFRunLoop is running. // Note that starting with macOS 10.12, the run loop may be stopped when a // window is closed, so we need to put the call to CFRunLoopRun() into a loop // of its own. HTuple gStartMutex; H_pthread_t gActionThread; HBOOL gTerminate = FALSE;static void timer_callback(CFRunLoopTimerRef timer, void *info) {UnlockMutex(gStartMutex); }static Herror apple_action(void **parameters) {// Wait until the timer has fired to start processing.LockMutex(gStartMutex);UnlockMutex(gStartMutex);try{action();}catch (HException &exception){fprintf(stderr," Error #%u in %s: %s\n", exception.ErrorCode(),(const char *)exception.ProcName(),(const char *)exception.ErrorMessage());}// Tell the main thread to terminate itself.LockMutex(gStartMutex);gTerminate = TRUE;UnlockMutex(gStartMutex);CFRunLoopStop(CFRunLoopGetMain());return H_MSG_OK; }static int apple_main(int argc, char *argv[]) {Herror error;CFRunLoopTimerRef Timer;CFRunLoopTimerContext TimerContext = { 0, 0, 0, 0, 0 };CreateMutex("type","sleep",&gStartMutex);LockMutex(gStartMutex);error = HpThreadHandleAlloc(&gActionThread);if (H_MSG_OK != error){fprintf(stderr,"HpThreadHandleAlloc failed: %d\n", error);exit(1);}error = HpThreadCreate(gActionThread,0,apple_action);if (H_MSG_OK != error){fprintf(stderr,"HpThreadCreate failed: %d\n", error);exit(1);}Timer = CFRunLoopTimerCreate(kCFAllocatorDefault,CFAbsoluteTimeGetCurrent(),0,0,0,timer_callback,&TimerContext);if (!Timer){fprintf(stderr,"CFRunLoopTimerCreate failed\n");exit(1);}CFRunLoopAddTimer(CFRunLoopGetCurrent(),Timer,kCFRunLoopCommonModes);for (;;){HBOOL terminate;CFRunLoopRun();LockMutex(gStartMutex);terminate = gTerminate;UnlockMutex(gStartMutex);if (terminate)break;}CFRunLoopRemoveTimer(CFRunLoopGetCurrent(),Timer,kCFRunLoopCommonModes);CFRelease(Timer);error = HpThreadHandleFree(gActionThread);if (H_MSG_OK != error){fprintf(stderr,"HpThreadHandleFree failed: %d\n", error);exit(1);}ClearMutex(gStartMutex);return 0; } #endifint main(int argc, char *argv[]) {int ret = 0;try{ #if defined(_WIN32)SetSystem("use_window_thread", "true"); #endif// file was stored with local-8-bit encoding// -> set the interface encoding accordinglySetHcppInterfaceStringEncodingIsUtf8(false);// Default settings used in HDevelop (can be omitted)SetSystem("width", 512);SetSystem("height", 512);#ifndef __APPLE__action(); #elseret = apple_main(argc,argv); #endif}catch (HException &exception){fprintf(stderr," Error #%u in %s: %s\n", exception.ErrorCode(),(const char *)exception.ProcName(),(const char *)exception.ErrorMessage());ret = 1;}return ret; }#endif#endif

04. 創建Qt圖形界面項目

4.1 簡單的GUI設計如下

4.2 選擇MSVC2019編譯器或者其它版本的編譯器

集成halcon編譯需要用msvc，如果用minGW,會出錯，等有時間在去研究minGW編譯情形。

05. Qt集成Halcon程序

5.1 在pro項目配置文件中添加一下Halcon相關配置

# MacOS specific settings. Note that while dyld will search under # /Library/Frameworks by default, the preprocessor/compiler/linker will not # and need to be told explicitly. macx {QMAKE_CXXFLAGS += -F/Library/FrameworksQMAKE_LFLAGS += -F/Library/FrameworksLIBS += -framework HALCONCpp } else {#defineswin32:DEFINES += WIN32#includesINCLUDEPATH += "$$(HALCONROOT)/include"INCLUDEPATH += "$$(HALCONROOT)/include/halconcpp"#libsQMAKE_LIBDIR += "$$(HALCONROOT)/lib/$$(HALCONARCH)"unix:LIBS += -lhalconcpp -lhalcon -lXext -lX11 -ldl -lpthreadwin32:LIBS += "$$(HALCONROOT)/lib/$$(HALCONARCH)/halconcpp.lib" \"$$(HALCONROOT)/lib/$$(HALCONARCH)/halcon.lib" }

5.2 在mainwindow.h文件中添加Halcon相關頭文件

# include "HalconCpp.h" # include "HDevThread.h"using namespace HalconCpp;

5.3 在MainWindow添加halcon相關的變量

源文件如下：

#ifndef MAINWINDOW_H #define MAINWINDOW_H#include <QMainWindow># include "HalconCpp.h" # include "HDevThread.h"using namespace HalconCpp;QT_BEGIN_NAMESPACE namespace Ui { class MainWindow; } QT_END_NAMESPACEclass MainWindow : public QMainWindow {Q_OBJECTpublic:MainWindow(QWidget *parent = nullptr);~MainWindow();private slots:void on_pushButton_clicked();private:Ui::MainWindow *ui;// Local iconic variablesHObject ho_Carb;// Local control variablesHTuple hv_Width, hv_Height, hv_WindowHandle;}; #endif // MAINWINDOW_H

5.4 實現采集圖像槽函數

//采集圖像按鈕槽函數 void MainWindow::on_pushButton_clicked() {//從本地磁盤讀取一張圖片ReadImage(&ho_Carb, "E:/CarB.jpg");//獲取圖片大小GetImageSize(ho_Carb, &hv_Width, &hv_Height);//關閉當前窗口if (HDevWindowStack::IsOpen())CloseWindow(HDevWindowStack::Pop());//打開新窗口SetWindowAttr("background_color","black");//Halcon圖像窗口與QT窗口是獨立的窗口//OpenWindow(0,0,hv_Width/2,hv_Height/2,0,"visible","",&hv_WindowHandle);//獲取Label空間的WinIdHlong winId = (Hlong)ui->label->winId();//將Label和Halcon窗口進行綁定OpenWindow(0,0,hv_Width/2,hv_Height/2,winId,"visible","",&hv_WindowHandle);HDevWindowStack::Push(hv_WindowHandle);//顯示圖片if (HDevWindowStack::IsOpen())DispObj(ho_Carb, HDevWindowStack::GetActive());}

5.5 編譯運行，執行結果

06. 附錄

6.1 測試程序下載

下載：【機器視覺】Qt聯合Halcon編程之顯示圖片.rar

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