VTK获取序列数据

VTK一次性读取多个图像文件的数据：

方法一：SetFileNames中传递一个路径数组

vtkSmartPointer<vtkStringArray > fileArray =  vtkSmartPointer<vtkStringArray >::New();  
char fileName[128]; //the file max length 
for(inti = 1; i < n; i++) //read n slice of pic's route  
{  
sprintf(fileName,"../headsq/quarter%03d.jpg", i);  
vtkstd::stringfileStr(fileName);  
fileArray->InsertNextValue(fileStr);     
}    
vtkSmartPointer<vtkJPEGReader>reader =  vtkSmartPointer<vtkJPEGReader>::New();  
reader->SetFileNames(fileArray);  //get the data of these pic
reader->Update(); 

方法二：SetFilePrefix/SetFilePattern搭配

vtkSmartPointer<vtkJPEGReader>reader =  vtkSmartPointer<vtkJPEGReader>::New();  
reader->SetFilePrefix ("F:\\vtkshuju\\Data\\headsq\\test");  
reader->SetFilePattern("%s%03d.jpg");  
reader ->SetDataExtent (0,255,0,255,1,99);//get 99 slice of pic with 256 * 256  
reader->Update(); 

方法三： SetFilePrefix/SetImageRange搭配

v16->SetFilePrefix("F:\\vtkshuju\\Data\\headsq\\quarter");
v16->SetImageRange(1, 93);

获取

F:\\vtkshuju\\Data\\headsq\\quarter.1  to F:\\vtkshuju\\Data\\headsq\\quarter.93

方法四：读取、叠加

vtkSmartPointer<vtkImageAppend > appendImage = vtkSmartPointer<vtkImageAppend >::New();  
appendImage->SetAppendAxis(2);     
vtkSmartPointer<vtkJPEGReader>reader =  vtkSmartPointer<vtkJPEGReader>::New();  
char fileName[128];//the file max length  
for(int i = 1; i < 66; i++)  
{  
       sprintf(fileName,"F:\\vtkshuju\\Data\\headsq\\test%02d.jpg", i);  
       reader->SetFileName(fileName);  
       appendImage->AddInputConnection(reader->GetOutputPort());  
}