【机器视觉】Qt联合Halcon编程之显示多图片

00. 目录

文章目录

00. 目录
01. 概述
02. 编写Halcon程序
03. Halcon程序导出C++文件
04. 创建Qt图形界面项目
05. Qt集成Halcon程序
06. 附录

01. 概述

QT与Halcon联合编程。将Halcon中代码集成到Qt程序中。

开发环境

Qt：Qt5.15.2

Halcon: Halcon 19.11

02. 编写Halcon程序

Halcon程序示例

* 从本地磁盘读取一张图片
read_image (Carb, 'E:/CarB.jpg')* 获取图片大小
get_image_size (Carb, Width, Height)* 关闭当前窗口
dev_close_window ()* 打开新窗口
dev_open_window (0, 0, Width / 2, Height / 2, 'black', WindowHandle)* 显示图片
dev_display (Carb)

Halcon中执行结果

03. Halcon程序导出C++文件

将上述Halcon程序导出为C++源程序

导出内容如下：

///
// 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;// Procedure declarations
// Local procedures
void blobImage (HObject *ho_Image, HObject *ho_Region);// Procedures
// Local procedures
void blobImage (HObject *ho_Image, HObject *ho_Region)
{ReadImage(&(*ho_Image), "E:/test.jpg.tif");Threshold((*ho_Image), &(*ho_Region), 128, 255);if (HDevWindowStack::IsOpen())DispObj((*ho_Image), HDevWindowStack::GetActive());if (HDevWindowStack::IsOpen())DispObj((*ho_Region), HDevWindowStack::GetActive());return;
}#ifndef NO_EXPORT_MAIN
// Main procedure
void action()
{// Local iconic variablesHObject  ho_Carb;// Local control variablesHTuple  hv_Width, hv_Height, hv_WindowHandle;//从本地磁盘读取一张图片ReadImage(&ho_Carb, "E:/CarB.jpg");//获取图片大小GetImageSize(ho_Carb, &hv_Width, &hv_Height);//关闭当前窗口if (HDevWindowStack::IsOpen())CloseWindow(HDevWindowStack::Pop());//打开新窗口SetWindowAttr("background_color","black");OpenWindow(0,0,hv_Width/2,hv_Height/2,0,"visible","",&hv_WindowHandle);HDevWindowStack::Push(hv_WindowHandle);//显示图片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. 创建Qt图形界面项目

4.1 简单的GUI设计如下

集成halcon编译需要用msvc，如果用minGW,会出错，等有时间在去研究minGW编译情形。

05. Qt集成Halcon程序

5.1 在pro项目配置文件中添加一下Halcon相关配置

# 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相关头文件

#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;

5.3 在MainWindow添加halcon相关的变量

源程序如下：

#ifndef MAINWINDOW_H
#define MAINWINDOW_H#include <QMainWindow>#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;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();void on_pushButton_3_clicked();private:Ui::MainWindow *ui;// Local iconic variablesHObject  ho_Carb;// Local control variablesHTuple  hv_Width, hv_Height, hv_WindowHandle;};
#endif // MAINWINDOW_H

5.4 实现采集图像槽函数

//采集图像
void MainWindow::on_pushButton_clicked()
{QString fileName = QFileDialog::getOpenFileName(this,tr("打开图片"), "E://", tr("Image Files (*.png *.jpg *.bmp)"));qDebug() << fileName;//从本地磁盘读取一张图片//QString转HTuple要通过StringReadImage(&ho_Carb, fileName.toStdString().c_str());//获取图片大小GetImageSize(ho_Carb, &hv_Width, &hv_Height);}

友情提示

//QString转HTuple要通过String
ReadImage(&ho_Carb, fileName.toStdString().c_str());

5.5 实现显示图像槽函数

//显示图像
void MainWindow::on_pushButton_3_clicked()
{//关闭当前窗口if (HDevWindowStack::IsOpen())CloseWindow(HDevWindowStack::Pop());//打开新窗口SetWindowAttr("background_color","black");OpenWindow(0,0,hv_Width/2,hv_Height/2, (Hlong)ui->label->winId(),"visible","",&hv_WindowHandle);HDevWindowStack::Push(hv_WindowHandle);//显示图片if (HDevWindowStack::IsOpen())DispObj(ho_Carb, HDevWindowStack::GetActive());
}

友情提示

Qt中winId()和Halcon中窗口句柄转换

OpenWindow(0,0,hv_Width/2,hv_Height/2, (Hlong)ui->label->winId(),“visible”,"",&hv_WindowHandle);

5.6 编译程序

运行结果如下：

06. 附录

6.1 测试程序下载

下载：【机器视觉】Qt联合Halcon编程之显示多图片.rar

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