2006.02.02 15:36 "Re: [Tiff] Fastest method to load tiff files?", by Frank Warmerdam

On 2/2/06, Edward Lam <edward@sidefx.com> wrote:

What is the fastest way to read tiff files using libtiff?

Edward,

I would guess to use the TIFFReadEncodedStrip() or TIFFReadEncodedTile() functions, and to ensure you go from first to last strip/tile in order. I don't think you will gain much speed over that by special techniques.

You might want to recognise some special cases, like packed stripped uncompressed 8bit data and just do a direct read or memory map of the data, but I doubt it will help much.

You might also want to look at using the memory mapping support which sometimes can be faster than "normal" file IO.

Best regards,
--

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