10：图像传参+UI界面互传
1、图像传参
需要把图像变量声明为全局变量，这样才可以进行互传
也可以直接返回图像类型的变量进行互传，然后调用此函数就可以了；
但是前提依然是要声明全局变量
.h文件
public:explicit celiang(QWidget *parent = 0);~celiang();HObject ho_Image;private slots:HObject on_pushButton_clicked();.cpp文件
//打开图像
HObject celiang::on_pushButton_clicked()
{HTuple hv_Width, hv_Height;//传入路径QString path = QFileDialog::getOpenFileName(this,"选择图片","","JPG文件(*.jpg;*.bmp)");// if(path == "") return;//读图HTuple file2=HTuple(path.toStdString().c_str());ReadImage(&ho_Image,file2);//直径读取图像// ReadImage(&ho_Image, "./data/1");//获取图像大小GetImageSize(ho_Image, &hv_Width, &hv_Height);//HDevWindowStack::Push(hv_WindowHandle);//901 661 容纳不了//set part ---适应一个大窗口上去SetPart(hv_WindowHandle02,0, 0, hv_Height, hv_Width);// dispimage(ho_Image);//显示 GetActive 默认哪个激活状态DispObj(ho_Image,hv_WindowHandle02);return ho_Image;//注意注意注意}.h文件
#define CELIANG_H#include <QWidget>#include"MvCameraControl.h"
#include <QImage>
#include "HalconCpp.h"
using namespace HalconCpp;extern HTuple hv_WindowHandle02;namespace Ui {
class celiang;
}class celiang : public QWidget
{Q_OBJECTpublic:explicit celiang(QWidget *parent = 0);~celiang();HObject ho_Image; //注意注意注意void disp_message (HTuple hv_WindowHandle, HTuple hv_String, HTuple hv_CoordSystem,HTuple hv_Row, HTuple hv_Column, HTuple hv_Color, HTuple hv_Box);void dispimage(HObject &ho_Image);private slots:void on_pushButton_clicked();void on_pushButton_2_clicked();private:Ui::celiang *ui;
};#endif // CELIANG_H
.cpp文件
#include "celiang.h"
#include "ui_celiang.h"
#include <mainwindow.h>
#include <QFileDialog>
#include <qdebug.h>
celiang::celiang(QWidget *parent) :QWidget(parent),ui(new Ui::celiang)
{// 在类的构造函数或初始化函数中添加qRegisterMetaType<HalconCpp::HObject*>("HalconCpp::HObject*");ui->setupUi(this);
}celiang::~celiang()
{delete ui;
}//打开图像
void celiang::on_pushButton_clicked()
{HTuple hv_Width, hv_Height;//传入路径QString path = QFileDialog::getOpenFileName(this,"选择图片","","JPG文件(*.jpg;*.bmp)");if(path == "") return;//读图HTuple file2=HTuple(path.toStdString().c_str());ReadImage(&ho_Image,file2);//直径读取图像// ReadImage(&ho_Image, "./data/1");//获取图像大小GetImageSize(ho_Image, &hv_Width, &hv_Height);//HDevWindowStack::Push(hv_WindowHandle);//901 661 容纳不了//set part ---适应一个大窗口上去SetPart(hv_WindowHandle02,0, 0, hv_Height, hv_Width);dispimage(ho_Image);//显示 GetActive 默认哪个激活状态DispObj(ho_Image,hv_WindowHandle02);//图像处理算法//GenCircleCenterFromBlob(ho_Image, &hv_Row1, &hv_Column1, &hv_Radius);
}//显示图像
void celiang::dispimage( HObject &ho_Image)
{// HObject ho_Image ;DispObj(ho_Image,hv_WindowHandle02);
}//进行图像处理
void celiang::on_pushButton_2_clicked( )
{// Local iconic variablesHObject ho_GrayImage, ho_Regions, ho_RegionFillUp;HObject ho_ImageReduced, ho_Regions1, ho_RegionDilation;HObject ho_RegionErosion, ho_RegionDifference, ho_ImageReduced1;HObject ho_Edges, ho_SelectedXLD, ho_UnionContours, ho_Cross;HObject ho_ContCircle;// Local control variablesHTuple hv_I, hv_Width, hv_Height;HTuple hv_Row, hv_Column, hv_Radius, hv_StartPhi, hv_EndPhi;HTuple hv_PointOrder, hv_Number, hv_li, hv_Index, hv_message;hv_I=1;// ReadImage(&ho_Image, "./data/"+hv_I);//判断图像存在不存在if (!ho_Image.IsInitialized() || ho_Image.CountObj() == 0){QMessageBox::warning(this,QString::fromLocal8Bit("警告"),QString::fromLocal8Bit("图像不存在"));return;}//调用显示图像函数dispimage( ho_Image);//获取图像大小GetImageSize(ho_Image, &hv_Width, &hv_Height);//HDevWindowStack::Push(hv_WindowHandle);//901 661 容纳不了//set part ---适应一个大窗口上去SetPart(hv_WindowHandle02,0, 0, hv_Height, hv_Width);SetLineWidth(hv_WindowHandle02,2);// DispObj(ho_Image, hv_WindowHandle02);Rgb1ToGray(ho_Image, &ho_GrayImage);Threshold(ho_GrayImage, &ho_Regions, 0, 104);FillUp(ho_Regions, &ho_RegionFillUp);ReduceDomain(ho_GrayImage, ho_RegionFillUp, &ho_ImageReduced);Threshold(ho_ImageReduced, &ho_Regions1, 151, 255);DilationCircle(ho_Regions1, &ho_RegionDilation, 20);ErosionCircle(ho_Regions1, &ho_RegionErosion, 20);Difference(ho_RegionDilation, ho_RegionErosion, &ho_RegionDifference);ReduceDomain(ho_GrayImage, ho_RegionDifference, &ho_ImageReduced1);EdgesColorSubPix(ho_ImageReduced1, &ho_Edges, "canny", 2, 40, 120);SelectShapeXld(ho_Edges, &ho_SelectedXLD, "area", "and", 150, 999990);UnionCocircularContoursXld(ho_SelectedXLD, &ho_UnionContours, 0.5, 0.1, 0.2,30, 10, 10, "true", 1);FitCircleContourXld(ho_UnionContours, "algebraic", -1, 0, 0, 3, 2, &hv_Row, &hv_Column,&hv_Radius, &hv_StartPhi, &hv_EndPhi, &hv_PointOrder);GenCrossContourXld(&ho_Cross, hv_Row, hv_Column, 36, hv_StartPhi);GenCircleContourXld(&ho_ContCircle, hv_Row, hv_Column, hv_Radius, 0, HTuple(360).TupleRad(),"positive", 1);CountObj(ho_ContCircle, &hv_Number);hv_li = 566.519/24;if (HDevWindowStack::IsOpen())ClearWindow(HDevWindowStack::GetActive());if (HDevWindowStack::IsOpen())DispObj(ho_Image, HDevWindowStack::GetActive());if (HDevWindowStack::IsOpen())DispObj(ho_ContCircle, HDevWindowStack::GetActive());if (HDevWindowStack::IsOpen())DispObj(ho_Cross, HDevWindowStack::GetActive());//dev_display (Edges){HTuple end_val53 = hv_Number-1;HTuple step_val53 = 1;for (hv_Index=0; hv_Index.Continue(end_val53, step_val53); hv_Index += step_val53){// 将数值结果转换为字符串double diameter = (hv_Radius[hv_Index].D() * 2) / hv_li.D();// 构建Qt字符串（直接使用Unicode中文）QString qsMessage = QString::fromLocal8Bit("直径: %1 mm").arg(diameter, 0, 'f', 6) ; // 保留两位小数// QString qsMessage = QString::fromLocal8Bit("直径: ")+ QString::number(diameter)+"mm" ; // 保留两位小数// 转换QString为Halcon需要的HTupleHTuple hv_message = HTuple(qsMessage.toUtf8().constData());// hv_message = //'直径为：'// "\326\261\276\266\316\252\243\272"+((HTuple(hv_Radius[hv_Index])*2)/hv_li);disp_message(hv_WindowHandle02, hv_message, "Image", HTuple(hv_Row[hv_Index]),HTuple(hv_Column[hv_Index]), "black", "true");}}// stop(...); only in hdevelop}2、判断图像是否为空
//判断图像存在不存在if (!ho_Image.IsInitialized() || ho_Image.CountObj() == 0){QMessageBox::warning(this,QString::fromLocal8Bit("警告"),QString::fromLocal8Bit("图像不存在"));return;}3、UI界面互传
1.在头文件声明指针类型
QTextBrowser * g_pTb;2.在构造函数中赋值传参
g_pTb=ui->textBrowser;//这个就是主程序的UI界面3.在其它类中引用主程序的UI界面
extern QTextBrowser * g_pTb;同理，窗口引用也是此方法（只不过不用使用指针也可以）
1.声明
HTuple hv_WindowHandle01;2.其它类直接引用
extern HTuple hv_WindowHandle01;