AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

1999.09.24 12:24 "Tiff 12 bits/pixels!!!", by Mauricio
1999.09.24 22:45 "Re: Tiff 12 bits/pixels!!!", by Niles Ritter
1999.09.27 03:24 "Re: Tiff 12 bits/pixels!!!", by Niles Ritter
1999.09.24 23:13 "Re: Tiff 12 bits/pixels!!!", by Eric Shapiro

1999.09.24 22:45 "Re: Tiff 12 bits/pixels!!!", by Niles Ritter

To implement this transformation (12-bit image into data matrix) I must know HOW Adobe software saves this TIFF format, I mean I need to know the structure used by Adobe on saving the TIFF format when using 12-bit

> grayscale images. For this reason, I?d like to ask you if you have this

kind of information or where I can get it.

If you have the libtiff utilities (www.libtiff.org) you can run "tiffinfo" and/or

"tiffdump" on the files to see how they are structured.

The TIFF spec usually recommends packing data into the next larger power-of-2, so I would be they are actually 16-bit data.

Count yourself lucky; I once had to deal with a totally goofy TIFF file (I think it was from a government agency) that was 11-bit TIFF, packed. Just

imagine the fun bit-masking that stuff out....