VS2022联合Qt5开发学习11(QT5.12.3联合VTK在VS2022上开发医学图像项目5——qvtkWidget上显示STL三维图像并取点)

本文主要是介绍VS2022联合Qt5开发学习11(QT5.12.3联合VTK在VS2022上开发医学图像项目5——qvtkWidget上显示STL三维图像并取点),希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!

这篇博文是接着这个系列前面的博文,来讲如何实现医学图像三视图同步视图。我想到的一个思路是用Scrollbar来控制切面的改变,还有一个想法是在三维图像上取点,然后以这个点为切面中心更新三维视图。这篇博文主要介绍的就是第二个想法的三维图像上取点相关实现准备。

在写这个项目的时候我真的琢磨了很久,网上能参考的资料也不多,下面就来和大家详细分享一下我研究这么久的成果吧。(研究不易,如果你觉得这篇文对你有帮助,请给博主点赞收藏评论三连hhh)

我比较懒,所以这个博客用到的主体代码是之前博客里介绍的,一些前面的准备步骤我已经在相关博客里介绍过了,我这里就不重复写了,大家有困惑的话就挪步瞅瞅我之前的博客吧。

VS2022联合Qt5开发学习5(QT5.12.3联合VTK在VS2022上开发医学图像项目)_vs2022 qt5.12-CSDN博客

VS2022联合Qt5开发学习7(QT5.12.3联合VTK在VS2022上开发医学图像项目2——十字叉标注)_qt vs开发-CSDN博客 

 

 1. 用VTK实现取点

在正式写到如何在stl三维图像上取点之前,我们先练习一下如何在VTK上取点。下面的实例是一个纯VTK项目,我用的是VTK7,VTK9应该运行也没啥问题。

首先是新建一个PointPickerInteractorStyle 类,写一些用鼠标左键取坐标的相关函数。

GetPoint.h

#pragma once
#include <vtkAutoInit.h>
VTK_MODULE_INIT(vtkRenderingOpenGL2)
VTK_MODULE_INIT(vtkRenderingFreeType)
VTK_MODULE_INIT(vtkInteractionStyle)#include <vtkSmartPointer.h>
#include <vtkSphereSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>#include <vtkPointPicker.h>
#include <vtkRendererCollection.h> 
#include <vtkInteractorStyleTrackballCamera.h>
#include <vtkObjectFactory.h>  //vtkStandardNewMacro();
#include <vtkProperty.h>#include <vtkAxesActor.h>
#include <vtkOrientationMarkerWidget.h>/**************************************************************************************************/
class PointPickerInteractorStyle : public vtkInteractorStyleTrackballCamera
{
public:static PointPickerInteractorStyle* New();vtkTypeMacro(PointPickerInteractorStyle, vtkInteractorStyleTrackballCamera);virtual void OnLeftButtonDown(){//打印鼠标左键像素位置std::cout << "Picking pixel: " << this->Interactor->GetEventPosition()[0]<< " " << this->Interactor->GetEventPosition()[1] << std::endl;//注册拾取点函数this->Interactor->GetPicker()->Pick(this->Interactor->GetEventPosition()[0],this->Interactor->GetEventPosition()[1], 0,  // always zero.this->Interactor->GetRenderWindow()->GetRenderers()->GetFirstRenderer());//打印拾取点空间位置double picked[3];this->Interactor->GetPicker()->GetPickPosition(picked);std::cout << "Picked value: " << picked[0] << " " << picked[1] << " " << picked[2] << std::endl;//对拾取点进行标记vtkSmartPointer<vtkSphereSource> sphereSource =vtkSmartPointer<vtkSphereSource>::New();sphereSource->Update();vtkSmartPointer<vtkPolyDataMapper> mapper =vtkSmartPointer<vtkPolyDataMapper>::New();mapper->SetInputConnection(sphereSource->GetOutputPort());vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();actor->SetMapper(mapper);actor->SetPosition(picked);actor->SetScale(0.05);actor->GetProperty()->SetColor(1.0, 1.0, 1.0);this->Interactor->GetRenderWindow()->GetRenderers()->GetFirstRenderer()->AddActor(actor);vtkInteractorStyleTrackballCamera::OnLeftButtonDown();}
};

然后在cpp文件上构建VTK的actor、render、window,就是那一套标准化流程。大家不熟悉的话可以瞅瞅我之前这个系列的学习笔记:

VTK项目代码学习_梦里花乡的博客-CSDN博客

GetPoint.cpp

#include <GetPoint.h>vtkStandardNewMacro(PointPickerInteractorStyle);int main()
{vtkSmartPointer<vtkSphereSource> sphereSource =vtkSmartPointer<vtkSphereSource>::New();sphereSource->Update();vtkSmartPointer<vtkPolyDataMapper> mapper =vtkSmartPointer<vtkPolyDataMapper>::New();mapper->SetInputConnection(sphereSource->GetOutputPort());vtkSmartPointer<vtkActor> actor =vtkSmartPointer<vtkActor>::New();actor->SetMapper(mapper);vtkSmartPointer<vtkRenderer> renderer =vtkSmartPointer<vtkRenderer>::New();renderer->AddActor(actor);renderer->SetBackground(0, 0, 0);vtkSmartPointer<vtkRenderWindow> renderWindow =vtkSmartPointer<vtkRenderWindow>::New();renderWindow->Render();renderWindow->SetWindowName("PointPicker");renderWindow->AddRenderer(renderer);vtkSmartPointer<vtkPointPicker> pointPicker =vtkSmartPointer<vtkPointPicker>::New();vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =vtkSmartPointer<vtkRenderWindowInteractor>::New();renderWindowInteractor->SetPicker(pointPicker);renderWindowInteractor->SetRenderWindow(renderWindow);vtkSmartPointer<PointPickerInteractorStyle> style =vtkSmartPointer<PointPickerInteractorStyle>::New();renderWindowInteractor->SetInteractorStyle(style);//vtkSmartPointer<vtkAxesActor>  Axes = vtkSmartPointer<vtkAxesActor>::New();vtkSmartPointer<vtkOrientationMarkerWidget>  widget =vtkSmartPointer<vtkOrientationMarkerWidget>::New();widget->SetInteractor(renderWindowInteractor);widget->SetOrientationMarker(Axes);widget->SetOutlineColor(1, 1, 1);widget->SetViewport(0, 0, 0.2, 0.2);widget->SetEnabled(1);widget->InteractiveOn();renderWindow->Render();renderWindowInteractor->Start();return 0;
}

这里需要特别注意,这一行一定不要忘记写了

vtkStandardNewMacro(PointPickerInteractorStyle);

 

 

运行结果

2. Qt界面取点

关于Qt界面如何取点的相关内容,我已经在之前的博文VS2022联合Qt5开发学习9(QT5.12.3鼠标按下、释放、移动事件以及Qt上取标注点)-CSDN博客里介绍了,在这里就不再做更多说明了。

3. qvtkWidget上显示STL三维图像并取点

这个实例是接着之前的博文做的,所以一些前期的步骤我这里就不重复写了,大家不大清楚的话可以看一下这篇博文:VS2022联合Qt5开发学习7(QT5.12.3联合VTK在VS2022上开发医学图像项目2——十字叉标注)_qt vs开发-CSDN博客

首先我们需要创建一个自定义的交互器样式类,该类继承自vtkInteractorStyleTrackballCamera,覆写了鼠标左键按下事件处理函数 OnLeftButtonDown。在这个函数中,我们使用 vtkPointPicker 实现了鼠标点击位置的三维点选取。

PointPickerInteractorStyle.h

#pragma once
#include <vtkAutoInit.h>
VTK_MODULE_INIT(vtkRenderingOpenGL2)
VTK_MODULE_INIT(vtkRenderingFreeType)
VTK_MODULE_INIT(vtkInteractionStyle)#include <vtkSmartPointer.h>
#include <vtkSphereSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>#include <vtkPointPicker.h>
//this->Interactor->GetRenderWindow()->GetRenderers()->GetFirstRenderer()
#include <vtkRendererCollection.h> 
#include <vtkInteractorStyleTrackballCamera.h>
#include <vtkObjectFactory.h>  //vtkStandardNewMacro();
#include <vtkProperty.h>#include <vtkAxesActor.h>
#include <vtkOrientationMarkerWidget.h>class PointPickerInteractorStyle : public vtkInteractorStyleTrackballCamera
{
public:static PointPickerInteractorStyle* New();vtkTypeMacro(PointPickerInteractorStyle, vtkInteractorStyleTrackballCamera);virtual void OnLeftButtonDown(){//打印鼠标左键像素位置std::cout << "Picking pixel: " << this->Interactor->GetEventPosition()[0]<< " " << this->Interactor->GetEventPosition()[1] << std::endl;//注册拾取点函数this->Interactor->GetPicker()->Pick(this->Interactor->GetEventPosition()[0],this->Interactor->GetEventPosition()[1], 0,  // always zero.this->Interactor->GetRenderWindow()->GetRenderers()->GetFirstRenderer());//打印拾取点空间位置double picked[3];this->Interactor->GetPicker()->GetPickPosition(picked);std::cout << "Picked value: " << picked[0] << " " << picked[1] << " " << picked[2] << std::endl;//对拾取点进行标记vtkSmartPointer<vtkSphereSource> sphereSource =vtkSmartPointer<vtkSphereSource>::New();sphereSource->Update();vtkSmartPointer<vtkPolyDataMapper> mapper =vtkSmartPointer<vtkPolyDataMapper>::New();mapper->SetInputConnection(sphereSource->GetOutputPort());vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();actor->SetMapper(mapper);actor->SetPosition(picked);actor->SetScale(5);actor->GetProperty()->SetColor(1.0, 0, 0);this->Interactor->GetRenderWindow()->GetRenderers()->GetFirstRenderer()->AddActor(actor);vtkInteractorStyleTrackballCamera::OnLeftButtonDown();}
};

PointPickerInteractorStyle.cpp

#include "PointPickerInteractorStyle.h"vtkStandardNewMacro(PointPickerInteractorStyle);

 

然后我们需要在原来的代码基础上新建这个自定义的交互器样式,其他代码没有什么特别多的变化。

	vtkSmartPointer<vtkRenderWindowInteractor> interactor = ui.qvtkWidget->GetRenderWindow()->GetInteractor();vtkSmartPointer<PointPickerInteractorStyle> style = vtkSmartPointer<PointPickerInteractorStyle>::New();style->SetDefaultRenderer(renderer);interactor->SetInteractorStyle(style);interactor->Initialize();

 

STLpoint_vtk7.h文件

#pragma once#include <QtWidgets/QMainWindow>
#include "ui_STLpoint_vtk7.h"#include <vtkAutoInit.h>
#include <vtkBMPReader.h>
#include <vtkFloatArray.h>
#include <vtkImageActor.h>
#include <vtkImageChangeInformation.h>
#include <vtkImageData.h>
#include <vtkImageImport.h>
#include <vtkImageViewer2.h>
#include <vtkInteractorStyleImage.h>
#include <vtkJPEGReader.h>
#include <vtkLookupTable.h>
#include <vtkMetaImageReader.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPointData.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSTLReader.h>
#include <vtkSmartPointer.h>
#include <vtkXMLImageDataWriter.h>#include <PointPickerInteractorStyle.h>class STLpoint_vtk7 : public QMainWindow
{Q_OBJECTpublic:STLpoint_vtk7(QWidget* parent = nullptr);~STLpoint_vtk7();private slots:void openFileSlot();private:Ui::STLpoint_vtk7Class ui;private:vtkSmartPointer<vtkRenderer> m_vtkRenderer;vtkSmartPointer<vtkRenderWindow> m_vtkRenderWindow;private:vtkSmartPointer<vtkActor> DrawCross(vtkSmartPointer<vtkActor> _Actor, double _Pos[3]);
};

STLpoint_vtk7.cpp文件

#include "STLpoint_vtk7.h"#include <QDebug>
#include <QFileDialog>#include <vtkImageBlend.h>
#include <vtkImageCanvasSource2D.h>
#include <vtkImageChangeInformation.h>
#include <vtkImageData.h>
#include <vtkImageIterator.h>
#include <vtkImageLuminance.h>
#include <vtkImageStencil.h>
#include <vtkImageStencilData.h>
#include <vtkImageViewer.h>
#include <vtkInteractorStyleImage.h>
#include <vtkPNGReader.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkLine.h>
#include <vtkCamera.h>STLpoint_vtk7::STLpoint_vtk7(QWidget* parent): QMainWindow(parent)
{ui.setupUi(this);//test DrawCrossstatic vtkSmartPointer<vtkActor> _CrossCenterActor = vtkSmartPointer<vtkActor>::New();double _Pos[3];_Pos[0] = 0;_Pos[1] = 0;_Pos[2] = 0;_CrossCenterActor = DrawCross(_CrossCenterActor, _Pos);_CrossCenterActor->SetPosition(0, 0, 1);m_vtkRenderer = vtkSmartPointer<vtkRenderer>::New();m_vtkRenderer->AddActor(_CrossCenterActor);m_vtkRenderer->SetBackground(.0, .0, .0);vtkSmartPointer<vtkRenderWindow> window = vtkSmartPointer<vtkRenderWindow>::New();ui.qvtkWidget->SetRenderWindow(window);ui.qvtkWidget->GetRenderWindow()->AddRenderer(m_vtkRenderer);
}STLpoint_vtk7::~STLpoint_vtk7()
{}void STLpoint_vtk7::openFileSlot()
{QString selectFilePath = QFileDialog::getOpenFileName(this, QString("choose STL file"), QString(""), QString("file(*.stl)"));if (selectFilePath.isEmpty()){ui.textBrowser->append("The address of the STL file you choose is null!");return;}// 原始图像vtkSmartPointer<vtkSTLReader> reader = vtkSmartPointer<vtkSTLReader>::New();reader->SetFileName(selectFilePath.toStdString().c_str());reader->Update();// 获取图像信息vtkSmartPointer<vtkPolyData> polyData = reader->GetOutput();vtkSmartPointer<vtkPoints> points = polyData->GetPoints();// 计算中心点坐标double center[3] = { 0.0, 0.0, 0.0 };for (vtkIdType i = 0; i < points->GetNumberOfPoints(); ++i) {double point[3];points->GetPoint(i, point);for (int j = 0; j < 3; ++j) {center[j] += point[j];}}for (int j = 0; j < 3; ++j) {center[j] /= points->GetNumberOfPoints();}cout << "The Center of the Picture:" << center[0] << " " << center[1] << " " << center[2] << endl;//将source转换成mappervtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New();mapper->SetInputConnection(reader->GetOutputPort());//送入渲染引擎进行显示vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();actor->SetMapper(mapper);static vtkSmartPointer<vtkActor> _CrossCenterActor = vtkSmartPointer<vtkActor>::New();_CrossCenterActor = DrawCross(_CrossCenterActor, center);_CrossCenterActor->SetPosition(0, 0, 1);//渲染vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();renderer->AddActor(actor);renderer->SetBackground(.0, .0, .0);renderer->AddActor(_CrossCenterActor);renderer->SetBackground(.0, .0, .0);//renderer->SetActiveCamera(camera);//设置渲染窗口vtkSmartPointer<vtkRenderWindow> window = vtkSmartPointer<vtkRenderWindow>::New();ui.qvtkWidget->SetRenderWindow(window);ui.qvtkWidget->GetRenderWindow()->AddRenderer(renderer); //等价于window->AddRenderer(renderer);vtkSmartPointer<vtkRenderWindowInteractor> interactor = ui.qvtkWidget->GetRenderWindow()->GetInteractor();vtkSmartPointer<PointPickerInteractorStyle> style = vtkSmartPointer<PointPickerInteractorStyle>::New();style->SetDefaultRenderer(renderer);interactor->SetInteractorStyle(style);interactor->Initialize();//okui.textBrowser->append(QString("upload the file:") + selectFilePath + QString(" succeed !"));
}vtkSmartPointer<vtkActor> STLpoint_vtk7::DrawCross(vtkSmartPointer<vtkActor> _Actor, double _Pos[3])
{if (_Actor == nullptr){_Actor = vtkSmartPointer<vtkActor>::New();}vtkSmartPointer<vtkPoints> _Points = vtkSmartPointer<vtkPoints>::New();_Points->InsertNextPoint(_Pos[0] - 100, _Pos[1], _Pos[2]);_Points->InsertNextPoint(_Pos[0] + 100, _Pos[1], _Pos[2]);_Points->InsertNextPoint(_Pos[0], _Pos[1] - 100, _Pos[2]);_Points->InsertNextPoint(_Pos[0], _Pos[1] + 100, _Pos[2]);_Points->InsertNextPoint(_Pos[0], _Pos[1], _Pos[2] - 100);_Points->InsertNextPoint(_Pos[0], _Pos[1], _Pos[2] + 100);vtkSmartPointer<vtkLine> _Line0 = vtkSmartPointer<vtkLine>::New();_Line0->GetPointIds()->SetId(0, 0);_Line0->GetPointIds()->SetId(1, 1);vtkSmartPointer<vtkLine> _Line1 = vtkSmartPointer<vtkLine>::New();_Line1->GetPointIds()->SetId(0, 2);_Line1->GetPointIds()->SetId(1, 3);vtkSmartPointer<vtkLine> _Line2 = vtkSmartPointer<vtkLine>::New();_Line2->GetPointIds()->SetId(0, 4);_Line2->GetPointIds()->SetId(1, 5);vtkSmartPointer<vtkCellArray> _Lines = vtkSmartPointer<vtkCellArray>::New();_Lines->InsertNextCell(_Line0);_Lines->InsertNextCell(_Line1);_Lines->InsertNextCell(_Line2);vtkSmartPointer<vtkPolyData> _PolyData = vtkSmartPointer<vtkPolyData>::New();_PolyData->SetPoints(_Points);_PolyData->SetLines(_Lines);vtkSmartPointer<vtkPolyDataMapper> _Mapper = vtkSmartPointer<vtkPolyDataMapper>::New();_Mapper->SetInputData(_PolyData);vtkSmartPointer<vtkProperty> lineProperty = vtkSmartPointer<vtkProperty>::New();lineProperty->SetLineWidth(1.0);  // 设置线宽为 1,可以根据需要调整_Actor->SetMapper(_Mapper);_Actor->SetProperty(lineProperty);_Actor->GetProperty()->SetColor(1.0, 0.0, 0.0);return _Actor;
}
运行结果

qvtkWidget上显示STL三维图像并取点

这篇关于VS2022联合Qt5开发学习11(QT5.12.3联合VTK在VS2022上开发医学图像项目5——qvtkWidget上显示STL三维图像并取点)的文章就介绍到这儿,希望我们推荐的文章对编程师们有所帮助!



http://www.chinasem.cn/article/643573

相关文章

C语言小项目实战之通讯录功能

《C语言小项目实战之通讯录功能》:本文主要介绍如何设计和实现一个简单的通讯录管理系统,包括联系人信息的存储、增加、删除、查找、修改和排序等功能,文中通过代码介绍的非常详细,需要的朋友可以参考下... 目录功能介绍:添加联系人模块显示联系人模块删除联系人模块查找联系人模块修改联系人模块排序联系人模块源代码如下

SpringBoot项目中Maven剔除无用Jar引用的最佳实践

《SpringBoot项目中Maven剔除无用Jar引用的最佳实践》在SpringBoot项目开发中,Maven是最常用的构建工具之一,通过Maven,我们可以轻松地管理项目所需的依赖,而,... 目录1、引言2、Maven 依赖管理的基础概念2.1 什么是 Maven 依赖2.2 Maven 的依赖传递机

Vue项目中Element UI组件未注册的问题原因及解决方法

《Vue项目中ElementUI组件未注册的问题原因及解决方法》在Vue项目中使用ElementUI组件库时,开发者可能会遇到一些常见问题,例如组件未正确注册导致的警告或错误,本文将详细探讨这些问题... 目录引言一、问题背景1.1 错误信息分析1.2 问题原因二、解决方法2.1 全局引入 Element

如何设置vim永久显示行号

《如何设置vim永久显示行号》在Linux环境下,vim默认不显示行号,这在程序编译出错时定位错误语句非常不便,通过修改vim配置文件vimrc,可以在每次打开vim时永久显示行号... 目录设置vim永久显示行号1.临时显示行号2.永www.chinasem.cn久显示行号总结设置vim永久显示行号在li

基于Python开发电脑定时关机工具

《基于Python开发电脑定时关机工具》这篇文章主要为大家详细介绍了如何基于Python开发一个电脑定时关机工具,文中的示例代码讲解详细,感兴趣的小伙伴可以跟随小编一起学习一下... 目录1. 简介2. 运行效果3. 相关源码1. 简介这个程序就像一个“忠实的管家”,帮你按时关掉电脑,而且全程不需要你多做

基于WinForm+Halcon实现图像缩放与交互功能

《基于WinForm+Halcon实现图像缩放与交互功能》本文主要讲述在WinForm中结合Halcon实现图像缩放、平移及实时显示灰度值等交互功能,包括初始化窗口的不同方式,以及通过特定事件添加相应... 目录前言初始化窗口添加图像缩放功能添加图像平移功能添加实时显示灰度值功能示例代码总结最后前言本文将

Java中的Opencv简介与开发环境部署方法

《Java中的Opencv简介与开发环境部署方法》OpenCV是一个开源的计算机视觉和图像处理库,提供了丰富的图像处理算法和工具,它支持多种图像处理和计算机视觉算法,可以用于物体识别与跟踪、图像分割与... 目录1.Opencv简介Opencv的应用2.Java使用OpenCV进行图像操作opencv安装j

Python 中 requests 与 aiohttp 在实际项目中的选择策略详解

《Python中requests与aiohttp在实际项目中的选择策略详解》本文主要介绍了Python爬虫开发中常用的两个库requests和aiohttp的使用方法及其区别,通过实际项目案... 目录一、requests 库二、aiohttp 库三、requests 和 aiohttp 的比较四、requ

SpringBoot项目启动后自动加载系统配置的多种实现方式

《SpringBoot项目启动后自动加载系统配置的多种实现方式》:本文主要介绍SpringBoot项目启动后自动加载系统配置的多种实现方式,并通过代码示例讲解的非常详细,对大家的学习或工作有一定的... 目录1. 使用 CommandLineRunner实现方式:2. 使用 ApplicationRunne

使用IntelliJ IDEA创建简单的Java Web项目完整步骤

《使用IntelliJIDEA创建简单的JavaWeb项目完整步骤》:本文主要介绍如何使用IntelliJIDEA创建一个简单的JavaWeb项目,实现登录、注册和查看用户列表功能,使用Se... 目录前置准备项目功能实现步骤1. 创建项目2. 配置 Tomcat3. 项目文件结构4. 创建数据库和表5.