c++ - VTK Marching Cubes from vtkImageReader2 -


i have encountered problems of loading image stack vtkimagereader2 in order perform surface extraction using vtkmarchingcubes. 

vtksmartpointer<vtkimagereader2> reader = vtksmartpointer<vtkimagereader2>::new();      reader->setfileprefix("c:\\");     reader->setfilepattern("%d.png");     reader->setdataextent(0,556,0,613,0,200);     reader->setdataspacing(1,1,1);     reader->setdataorigin(0,0,0);     reader->setdatabyteordertolittleendian();     reader->setdatascalartypetounsignedshort();     reader->update();     reader->updatewholeextent();

fyi, image dataset 556x614x201 in dimension.

the image file name example below:

 0.png  1.png  2.png , till 200.png

it complains initialize: not open file (randomnumber).png. reader seems cannot find file prefix , pattern given.

however, after loaded image using vtkstringarray manually setting image path , file name, encountered problem of cannot contour data of dimension != 3


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