[Insight-users] File read time, 2d vs 3d

[Karthik Krishnan]

You are probably aware of this anyway, but I'll chip in neverthess. VTK files may be compressed with zlib (LZ77 compression followed by Huffman coding, if I am not mistaken). Now I don't know if that was of any help!




Todd Gable wrote:

>I did a small test reading 200MB of slice images in raw meta-data format (495 slices) vs. the same data in a single binary VTK file. The slice reading was about 60% faster on average (I was sure to stagger the reads to avoid OS caching). This is on a Win XP 1GB RAM computer. This seems very counter intuitive. Is this due to the VTK file format, which format is fastest for constant IO?
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>Todd Gable
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