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2008.01.22 22:30 "Re: Tiff Digest, Vol 44, Issue 8, Cropping faxes", by Richard Nolde
1. How to clip an image with LibTiff (Erez.Har-Tal@Walgreens.com) > Tiffcrop was written to handle just this sort of thing. It is in the > utilities section of recent releases and/or in CVS. Read the man page or > type tiffcrop --help to see all the options. > Richard Nolde, tiffcrop author > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 21 Jan 2008 13:38:09 -0600 > From: Erez.Har-Tal@Walgreens.com > Subject: [Tiff] How to clip an image with LibTiff > To: tiff@lists.maptools.org > Message-ID: > <OFFC203445.FE96EEE5-ON862573D7.006ADF71-862573D7.006BDDBF@walgreens.com> > > Content-Type: text/plain; charset=US-ASCII > > > Hello everyone, > > Please excuse me if I am new to libtiff, so any help would be appreciated. > > We deal with faxes in standard mode (204X98 dpi) or fine mode (204X198 > dpi) > saved with compression of type G3 1D. > > I need to write a utility that clips the first X rows (pixel) from the top > of the tiff image and last X rows from the bottom of the tiff image. We > will save it to a new tiff image with G3 compression in the height of 2X > pixels. The first X rows will be the top of the new image and the last X > rows will be the bottom of the image. The operation to clip the image, > should not alter the image nor do any thing that would damage the image. > > Is it doable using libtiff on Unix ? Any help and direction will be highly > appreciated. Doable using other open source libraries ? > > Thanks, > > ==================== > Erez Har-Tal > Computer Telephony > Execution Architecture and Telephony Solutions dept. > >