LibTiff Mailing List
TIFF and LibTiff Mailing List Archive
December 2004
Previous Thread
Next Thread
Previous by Thread
Next by Thread
Previous by Date
Next by Date
Contact
The TIFF Mailing List Homepage
This list is run by Frank Warmerdam
Archive maintained by AWare Systems
Thread
2004.12.10 21:47 "Re: Q: writing tiled TIFFs", by Andrey Kiselev
> > > 256x256 is apparently the LibTiff default. why does LibTiff choose > > > that for a 200x200 image ? i don't know. > > > > How do you arrive at this 'LibTiff default'? > > // set image dims > TIFFSetField(tiff, TIFFTAG_IMAGEWIDTH, (uint32) nWidth); > TIFFSetField(tiff, TIFFTAG_IMAGELENGTH, (uint32) nHeight); > > // get default tile size > uint32 tilewidth, tileheight; > tilewidth = 0; > tileheight = 0; > TIFFDefaultTileSize(tiff, &tilewidth, &tileheight); > > // use that size > TIFFSetField(tiff, TIFFTAG_TILEWIDTH, tilewidth); > TIFFSetField(tiff, TIFFTAG_TILELENGTH, tileheight); libtiff uses 256x256 tiles by default, but specification does not define any default value for this tag, so it is better to set this values manually. I can add logic to limit the tile size by the image dimensions, but I'm not sure it is necessary. Andrey -- Andrey V. Kiselev Home phone: +7 812 5970603 ICQ# 26871517