rasfilter8to1 reads the 8-bit deep rasterfile infile (the standard input default) and converts it to the 1-bit deep rasterfile outfile (standard output default) by thresholding or ordered dither. The output format is Sun standard rasterfile format (see <rasterfile.h>). This command is useful for viewing 8-bit rasterfiles on devices that can only display monochrome images.
example% screendump -f /dev/cgtwo | rasfilter8to1 | lpr -Pversatec -v
prints a monochromatic representation of the /dev/cgtwo frame buffer on the printer named versatec using the v output filter (see /etc/printcap). The printer must support an appropriate imaging model such as PostScript in order to print the image.
[a manual with the abbreviation PIXRCT]
Created by unroff & hp-tools. © somebody (See intro for details). All Rights Reserved. Last modified 11/5/97