实现图像的缩放

#include "vtkBMPReader.h"

#include "vtkImageViewer.h"

#include "vtkRenderWindowInteractor.h"

#include "vtkImageMagnify.h"

#include "vtkTransform.h"

int main()

{

vtkBMPReader *reader= vtkBMPReader::New();

reader->SetDataByteOrderToLittleEndian();

reader->SetFileName("mm.bmp"); //程序当前目录中有这个文件

reader->SetDataOrigin(0,0,0.0);

vtkTransform *t1=vtkTransform::New();

t1->RotateZ(0);

reader->SetTransform(t1); //控制图像的旋转

vtkImageMagnify *scale=vtkImageMagnify::New();

scale->SetInputConnection(reader->GetOutputPort());

scale->SetMagnificationFactors(2,2,2); //图像各个维度的维放

vtkImageViewer *viewer = vtkImageViewer::New();

viewer->SetInput(scale->GetOutput());

viewer->SetColorWindow(1000);

viewer->SetColorLevel(200);

viewer->SetPosition(0,0);

viewer->Render();

vtkRenderWindowInteractor *viewerinter = vtkRenderWindowInteractor::New();

viewer->SetupInteractor(viewerinter);

vtkImageViewer *viewer2 = vtkImageViewer::New(); //没有缩放的原图，以作对比

viewer2->SetInput(reader->GetOutput());

viewer2->SetColorWindow(256);

viewer2->SetColorLevel(200);

viewer2->SetPosition(0,100);

viewer2->Render();

vtkRenderWindowInteractor *viewerinter2 = vtkRenderWindowInteractor::New();

viewer2->SetupInteractor(viewerinter2);

viewerinter->Initialize();

viewerinter->Start();

scale->Delete();

viewer->Delete();

viewerinter->Delete();

viewer2->Delete();

viewerinter2->Delete();

return 0;

}

保存以上代码为文件：ImageScale.cxx

以下是CMakeLists.txt

cmake_minimum_required(VERSION 2.6)

PROJECT (ImageScale)

IF(NOT VTK_BINARY_DIR)

FIND_PACKAGE(VTK REQUIRED)

IF(NOT VTK_USE_RENDERING)

MESSAGE(FATAL_ERROR "${PROJECT_NAME} requires VTK_USE_RENDERING.")

ENDIF(NOT VTK_USE_RENDERING)

INCLUDE(${VTK_USE_FILE})

ENDIF(NOT VTK_BINARY_DIR)

ADD_EXECUTABLE(ImageScale ImageScale.cxx)

TARGET_LINK_LIBRARIES(ImageScale vtkRendering vtkIO)

附程序原图：



贴个图（好漂漂的mm

）：



本文来源：http://www.vislab.cn/bbs/viewthread.php?tid=3075&extra=page%3D17