MantisBT - ITK
A virtual method was added to ImageIOBase to generate RegionsSplitters specific for a ImageIO object. MetaImageIO got a implementation of this.
The way ImageFileWriter executes the pipeline was modified to drive streaming. Some correction and miss matching tolerance was added to passing buffers to ImageIO.
Before this patch itkMetaImageStreamingWriterIOTest2 was passing with incorrect/blank output.
Luis gave the following description of what needed to be done (and I did it):
The design proposal for implementing this feature is to move
(copy/paste) part of the code that you find in the itkStreamingImageFilter (in Code/BasicFilters) to the
itkImageFileWriter class.
In particular, the proposal is to use the itkImageRegionSplitter
inside the ImageFileWriter.
During the design discussions, one of the issues that came up
is that only the specific ImageIO classes are qualified to know
what would be the appropriate way to split the data in order to
match the type of blocks that the output image file format can
manage (e.g. DICOM can only stream slices).
Therefore, the suggested design is that the ImageFileWriter
will ask the ImageIO class to provide a specific instance of
an itkImageRegionSplitter, and then it will use it in a for
loop for generating sub-regions of the image, and request
them from the preceding image filters.
Until this is implemented, then your best options, is to do
just what you are doing: using the itkStreamingImageFilter
just before the ImageFileWriter. The drawback of course is
that you have to whole in memory the full-size output image
before being able to write it to disk.
| related to | 0008333 | closed | Bradley Lowekamp | MetaImageIO does not read correctly stream with non-uniform image spacing |
| related to | 0008369 | closed | Bradley Lowekamp | Some VectorImage filters set output information in AllocateOutputs |
StreamingFileWriter.diff (15,066) 2008-12-22 11:56https://public.kitware.com/Bug/file/1938/StreamingFileWriter.diff