[vtkusers] how can I read a series of .jepg

[worry_wang]

Hello 
I used read a series of dicom data using the function  vtkDICOMImageReader::SetDirectoryName.Recently I want to extract isosurface with a series of jepg data.But vtkJPEGReader has not the function like vtkDICOMImageReader::SetDirectoryName.What shall I do to read these jepg data?
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