山西长治做网站公司有哪些,北京网站制作济南,wordpress设置分享,wordpress模板 商品这篇博文是接着这个系列前面的博文#xff0c;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#xff0c;还有一个想法是在三维图像上取点#xff0c;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…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5QT5.12.3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7QT5.12.3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VTK7VTK9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vtkSmartPointervtkSphereSource sphereSource vtkSmartPointervtkSphereSource::New();sphereSource-Update();vtkSmartPointervtkPolyDataMapper mapper vtkSmartPointervtkPolyDataMapper::New();mapper-SetInputConnection(sphereSource-GetOutputPort());vtkSmartPointervtkActor actor vtkSmartPointervtkActor::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.hvtkStandardNewMacro(PointPickerInteractorStyle);int main() {vtkSmartPointervtkSphereSource sphereSource vtkSmartPointervtkSphereSource::New();sphereSource-Update();vtkSmartPointervtkPolyDataMapper mapper vtkSmartPointervtkPolyDataMapper::New();mapper-SetInputConnection(sphereSource-GetOutputPort());vtkSmartPointervtkActor actor vtkSmartPointervtkActor::New();actor-SetMapper(mapper);vtkSmartPointervtkRenderer renderer vtkSmartPointervtkRenderer::New();renderer-AddActor(actor);renderer-SetBackground(0, 0, 0);vtkSmartPointervtkRenderWindow renderWindow vtkSmartPointervtkRenderWindow::New();renderWindow-Render();renderWindow-SetWindowName(PointPicker);renderWindow-AddRenderer(renderer);vtkSmartPointervtkPointPicker pointPicker vtkSmartPointervtkPointPicker::New();vtkSmartPointervtkRenderWindowInteractor renderWindowInteractor vtkSmartPointervtkRenderWindowInteractor::New();renderWindowInteractor-SetPicker(pointPicker);renderWindowInteractor-SetRenderWindow(renderWindow);vtkSmartPointerPointPickerInteractorStyle style vtkSmartPointerPointPickerInteractorStyle::New();renderWindowInteractor-SetInteractorStyle(style);//vtkSmartPointervtkAxesActor Axes vtkSmartPointervtkAxesActor::New();vtkSmartPointervtkOrientationMarkerWidget widget vtkSmartPointervtkOrientationMarkerWidget::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9QT5.12.3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7QT5.12.3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.hclass 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vtkSmartPointervtkSphereSource sphereSource vtkSmartPointervtkSphereSource::New();sphereSource-Update();vtkSmartPointervtkPolyDataMapper mapper vtkSmartPointervtkPolyDataMapper::New();mapper-SetInputConnection(sphereSource-GetOutputPort());vtkSmartPointervtkActor actor vtkSmartPointervtkActor::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.hvtkStandardNewMacro(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。 vtkSmartPointervtkRenderWindowInteractor interactor ui.qvtkWidget-GetRenderWindow()-GetInteractor();vtkSmartPointerPointPickerInteractorStyle style vtkSmartPointerPointPickerInteractorStyle::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.hclass STLpoint_vtk7 : public QMainWindow {Q_OBJECTpublic:STLpoint_vtk7(QWidget* parent nullptr);~STLpoint_vtk7();private slots:void openFileSlot();private:Ui::STLpoint_vtk7Class ui;private:vtkSmartPointervtkRenderer m_vtkRenderer;vtkSmartPointervtkRenderWindow m_vtkRenderWindow;private:vtkSmartPointervtkActor DrawCross(vtkSmartPointervtkActor _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.hSTLpoint_vtk7::STLpoint_vtk7(QWidget* parent): QMainWindow(parent) {ui.setupUi(this);//test DrawCrossstatic vtkSmartPointervtkActor _CrossCenterActor vtkSmartPointervtkActor::New();double _Pos[3];_Pos[0] 0;_Pos[1] 0;_Pos[2] 0;_CrossCenterActor DrawCross(_CrossCenterActor, _Pos);_CrossCenterActor-SetPosition(0, 0, 1);m_vtkRenderer vtkSmartPointervtkRenderer::New();m_vtkRenderer-AddActor(_CrossCenterActor);m_vtkRenderer-SetBackground(.0, .0, .0);vtkSmartPointervtkRenderWindow window vtkSmartPointervtkRenderWindow::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vtkSmartPointervtkSTLReader reader vtkSmartPointervtkSTLReader::New();reader-SetFileName(selectFilePath.toStdString().c_str());reader-Update();// 获取图像信息vtkSmartPointervtkPolyData polyData reader-GetOutput();vtkSmartPointervtkPoints 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mappervtkSmartPointervtkPolyDataMapper mapper vtkSmartPointervtkPolyDataMapper::New();mapper-SetInputConnection(reader-GetOutputPort());//送入渲染引擎进行显示vtkSmartPointervtkActor actor vtkSmartPointervtkActor::New();actor-SetMapper(mapper);static vtkSmartPointervtkActor _CrossCenterActor vtkSmartPointervtkActor::New();_CrossCenterActor DrawCross(_CrossCenterActor, center);_CrossCenterActor-SetPosition(0, 0, 1);//渲染vtkSmartPointervtkRenderer renderer vtkSmartPointervtkRenderer::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vtkSmartPointervtkRenderWindow window vtkSmartPointervtkRenderWindow::New();ui.qvtkWidget-SetRenderWindow(window);ui.qvtkWidget-GetRenderWindow()-AddRenderer(renderer); //等价于window-AddRenderer(renderer);vtkSmartPointervtkRenderWindowInteractor interactor ui.qvtkWidget-GetRenderWindow()-GetInteractor();vtkSmartPointerPointPickerInteractorStyle style vtkSmartPointerPointPickerInteractorStyle::New();style-SetDefaultRenderer(renderer);interactor-SetInteractorStyle(style);interactor-Initialize();//okui.textBrowser-append(QString(upload the file:) selectFilePath QString( succeed !)); }vtkSmartPointervtkActor STLpoint_vtk7::DrawCross(vtkSmartPointervtkActor _Actor, double _Pos[3]) {if (_Actor nullptr){_Actor vtkSmartPointervtkActor::New();}vtkSmartPointervtkPoints _Points vtkSmartPointervtkPoints::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);vtkSmartPointervtkLine _Line0 vtkSmartPointervtkLine::New();_Line0-GetPointIds()-SetId(0, 0);_Line0-GetPointIds()-SetId(1, 1);vtkSmartPointervtkLine _Line1 vtkSmartPointervtkLine::New();_Line1-GetPointIds()-SetId(0, 2);_Line1-GetPointIds()-SetId(1, 3);vtkSmartPointervtkLine _Line2 vtkSmartPointervtkLine::New();_Line2-GetPointIds()-SetId(0, 4);_Line2-GetPointIds()-SetId(1, 5);vtkSmartPointervtkCellArray _Lines vtkSmartPointervtkCellArray::New();_Lines-InsertNextCell(_Line0);_Lines-InsertNextCell(_Line1);_Lines-InsertNextCell(_Line2);vtkSmartPointervtkPolyData _PolyData vtkSmartPointervtkPolyData::New();_PolyData-SetPoints(_Points);_PolyData-SetLines(_Lines);vtkSmartPointervtkPolyDataMapper _Mapper vtkSmartPointervtkPolyDataMapper::New();_Mapper-SetInputData(_PolyData);vtkSmartPointervtkProperty lineProperty vtkSmartPointervtkProperty::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 备注 如果按照我的步骤一步一步搭好项目就会发现一个问题我这么写代码确实可以正常取点但是我想移动旋转我的.stl图像时也会按鼠标左键这时候也会出现红色标注球但这时候我只是想移动转动图像不想取这个点。 我暂时也没想到什么好办法就在自定义的交互器样式中添加一个状态标记Ctrl来决定是否应该在点击时放置一个球形标记。最后可以通过按下Ctrl来切换这个状态。 class PointPickerInteractorStyle : public vtkInteractorStyleTrackballCamera { public:static PointPickerInteractorStyle* New();vtkTypeMacro(PointPickerInteractorStyle, vtkInteractorStyleTrackballCamera);PointPickerInteractorStyle() : PlaceMarker(false) {}virtual void OnLeftButtonDown(){// 检查是否按下了Ctrl键if (this-Interactor-GetControlKey()) {PlaceMarker !PlaceMarker; // 切换放置标记的状态if (!PlaceMarker) {// 如果现在不放置标记直接返回不执行后面的代码return;}}if (PlaceMarker) {//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vtkSmartPointervtkSphereSource sphereSource vtkSmartPointervtkSphereSource::New();sphereSource-Update();vtkSmartPointervtkPolyDataMapper mapper vtkSmartPointervtkPolyDataMapper::New();mapper-SetInputConnection(sphereSource-GetOutputPort());vtkSmartPointervtkActor actor vtkSmartPointervtkActor::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();}void SetPlaceMarker(bool place) {PlaceMarker place;}bool GetPlaceMarker() {return PlaceMarker;}private:bool PlaceMarker; // 控制是否放置标记的状态 }; 不过我运行起来感觉还是不大灵便需要按住ctrl键再加上左边鼠标键点一下才能切换成功。。。这步骤让人脑阔疼如果有朋友有优化这个地方的方法能在评论区说说不TAT