kgdykes@watmath.waterloo.edu (Ken Dykes) (03/25/89)
I may be dreaming, but, would someone happen to have a program that would
take .gif graphics data files and turn them into nice grey-scales on
a laserwriter?
All those pretty prictures and no hardcopy... sigh*
-ken
(i can see it now, a 5 step process using several filters to convert to
various formats until one ends up in a printable form)
--
- Ken Dykes, Software Development Group, U.of.Waterloo
Waterloo, Ontario, Canada N2L 3G1 [43.47N 80.52W]
kgdykes@watmath.uucp kgdykes@water.bitnet kgdykes@waterloo.csnet
kgdykes@watmath.uwaterloo.ca kgdykes@watmath.edu {backbone}!watmath!kgdykesmlm@nl.cs.cmu.edu (Michael L. Mauldin) (03/28/89)
In article <24529@watmath.waterloo.edu>, kgdykes@watmath.waterloo.edu (Ken Dykes) writes: > > I may be dreaming, but, would someone happen to have a program that would > take .gif graphics data files and turn them into nice grey-scales on > a laserwriter? > (i can see it now, a 5 step process using several filters to convert to > various formats until one ends up in a printable form) Would you believe 3 steps and a trip around the bathtub? 2 steps? 1 step? Yes, the FBM package does that. The pipeline is: clr2gray < foo.gif | fbnorm | fbps [ -w<width> ] [ -s ] > foo.ps The image defaults to the largest size within 7.5 inches wide by 9.5 inches tall (the -w option sets the width), and the -s (Scribe option) option disables the "document structuring conventions" so the image can be incorporated in a Scribe document (for older Scribe @graphic commands). The 'clr2gray' command converts mapped or RGB color to grayscale. The 'fbnorm' command is required to convert files with less than 8bits per pixel to 8bit files. The 'fbps' command can handle an 8bit grayscale GIF image directly. The full code will be available on comp.sources.unix shortly (it's in the queue). FTP is available now, see the end of the message: ************************************************************************ * Announcing the "Fuzzy PixMap" (or FBM) image manipulation library * ************************************************************************ Inputs the following file formats o Sun rasterfiles (1, 8, or 24 bits, color or grayscale) o GIF files (1 to 8 bits, color or grayscale) o Amiga IFF files (except HAM mode) o PCX files o PBM bitmaps o Face files (CMU format for 1bit files by Bennet Yee) o FBM files (my own format) (automatically determines input format, and uncompresses files compressed using 'compress') Outputs the following formats o Sun rasterfiles o FBM files o GIF files (mapped color only) o Amiga IFF files (except HAM mode) o PBM (1bit files only) o Face format (1bit files only) With input converter for o raw images (like Amiga Digi-View files) With output converters for o PostScript DING DING DING DING DING DING DING DING DING DING DING o Diablo graphics (1bit files only) Operations o Extract rectangle (optionally resizing and changing aspect ratio) o Change density and contrast (color and grayscale) o Rotate 90, 180, or 270 degrees o Quantize 24 bit RGB images to 8..256 colors Modified Heckbert median cut o Halftone grayscale using Ulichney's Blue Noise dithering Floyd-Steinberg dithering Jarvis's Constrained averaging Threshholding o Edge Sharpening by Digitial Laplacian (color or grayscale) o Convert color to grayscale (or compute "gray" colormap so grayscale images can be viewed on frame buffers) o Compute histograms of grayscale images o Sample 1bit images to convert to grayscale Status Beta test release, 0.9. "Use at your own risk, bug fixes not guaranteed, be happy with minimal documentation." Bugs reported so far have been fixed. Freely available for use, redistribution, incorporation into other code. Just don't make a profit off it or take my name off of it. Written in C for BSD and Mach Unix Systems. Tested on Vaxes, Sun Workstations, IBM RTs and Pyramids. Self contained. Does not require Sun include files or library routines to manipulate Sun rasters. Availability Anonymous FTP Host: nl.cs.cmu.edu (128.2.222.56) User: anonymous Password: name@site Directory: /usr/mlm/ftp/ Filename: fbm.tar.Z Transfer: 'image' Note: you must 'cd' to /usr/mlm/ftp directly, you cannot access either /usr, or /usr/mlm alone. Don't forget to specify 'image' format transfer. Has been posted to UseNet (comp.sources.unix). Acknowledgements GIF read support written by David Koblas. GIF write support written by David Rowley. Some IFF code by Jerry Morrison and Steve Shaw of Electronic Arts. Edge detection and pixel cleaning by Gary Sherwin and Michael Mauldin Michael L. Mauldin (Fuzzy) School of Computer Science ARPA: Michael.Mauldin@NL.CS.CMU.EDU Carnegie Mellon University Phone: (412) 268-3065 Pittsburgh, PA 15213-3890 --