xdither

Xdither is a program which reads a bitmap from an Xwindow, and genterates a postscript file. The image is created using Floyd-Steinburg dithering.

The -gamma switch is used to lighten (higher values) or darken (lower values) the image the default is 0.0.

This command is a shell command, and is available from TCL in the same fashion that other UNIX commands are.

 COMMAND SYNTAX:
    xdither  [file] [-title] [-width] [-height] [-noreverse]
                              [-gamma] [-dpi] [-thresh] [-sat]
    [file]       Optional: File to put Postcript into (def: stdout)
    [-title]     Optional: Title to print (def: gamma used.)
    [-width]     Optional: width of paper in inches (def: 8.5)
    [-height]    Optional: Height of paper in inches (def: 11.0)
    [-reverse]   Optional: If present do reverse the image
    [-gamma]     Optional: Lighten or darken the image (def: 0.0)
    [-dpi]       Optional: Target resolution of printer (def: 300)