for(int i = 0; i < (int)(vectimg.size()); i++){
vtkImageData* img = vectimg[i];
vtkImageChangeInformation* change = vtkImageChangeInformation::New();
for(int i = 0; i < (int)(vectimg.size()); i++){
vtkImageData* img = vectimg[i];
vtkImageChangeInformation* change = vtkImageChangeInformation::New();