2011.06.30 15:52 "Re: [Tiff] Is it possible to read a large tiff image in portions?", by John

On 30 June 2011 16:21, Hib Eris <hib@hiberis.nl> wrote:

To avoid this, I would like to read and process the image in pieces, how should I do this with libtiff?

I noticed

int TIFFReadRGBATile(TIFF *tif, uint32 x, uint32 y, uint32 *raster), but that seems to only work for tile-based tiff images. I would like to have a solution for all tiff images, not only tile-based ones.

You can use TIFFReadRGBAStrip() to get a strip of pixels out of a non-tiled TIFF image.

Another possible solution is to convert your strip tiffs into tiled tiffs. Something like:

$ tiffcp -t -w 128 -l 128 big-strip.tif big-tile.tif

John