Thread

2004.12.07 12:25 "[Tiff] Fetching pixel data from 4bit tiff", by Dan Field

2004.12.07 11:32 "Re: [Tiff] Fetching pixel data from 4bit tiff", by Joris Van Damme

2004.12.07 12:38 "Re: [Tiff] Fetching pixel data from 4bit tiff", by Dan Field

2004.12.07 11:48 "Re: [Tiff] Fetching pixel data from 4bit tiff", by Joris Van Damme

2004.12.07 12:57 "Re: [Tiff] Fetching pixel data from 4bit tiff", by Dan Field

2004.12.07 12:21 "Re: [Tiff] Fetching pixel data from 4bit tiff", by Joris Van Damme

2004.12.07 13:02 "Re: [Tiff] Fetching pixel data from 4bit tiff", by Joris Van Damme

2004.12.07 15:50 "Re: [Tiff] Fetching pixel data from 4bit tiff", by Dan Field

2004.12.07 15:52 "Re: [Tiff] Fetching pixel data from 4bit tiff", by Bob Friesenhahn

2004.12.07 17:46 "Re: [Tiff] Fetching pixel data from 4bit tiff", by Dan Field

2004.12.07 17:04 "Re: [Tiff] Fetching pixel data from 4bit tiff", by Bob Friesenhahn

2004.12.07 20:00 "Re: [Tiff] Fetching pixel data from 4bit tiff", by Joris Van Damme

2004.12.07 20:41 "Re: [Tiff] Fetching pixel data from 4bit tiff", by Bob Friesenhahn

2004.12.07 12:25 "[Tiff] Fetching pixel data from 4bit tiff", by Dan Field

Hi. I'm new to libtiff and I'm no C guru either, so please excuse my ignorance here.

I am trying to get pixel data from a 4bit TIFF. I can use TIFFReadRGBAImage, TIFFReadR, TIFFReadG, TIFFReadB, TIFFReadA but surely these will not provide the correct data for a 4bit image?

What method should I use to work with the raster, and what sort of data should I expect from a 4bit image pixel?

many thanks in advance

Dan Field <dof@llgc.org.uk>            http://www.cymruarywe.org/
                                       http://www.walesontheweb.org/
     Developer / Sysadmin
     Llyfyrgell Genedlaethol Cymru