.TL Ppm3d User Manual .SH 1 ppm3d .LP Updated: 24 April 2004 .br Table Of Contents .SH 2 NAME .LP ppm3d - convert two PPM images into a red/blue 3d glasses PPM .SH 2 SYNOPSIS .LP \fBppm3d\fR \fIleftppmfile\fR \fIrightppmfile\fR [\fIhorizontal_offset\fR] .SH 2 DESCRIPTION .LP .LP This program is part of Netpbm. .LP \fBppm3d\fR reads two PPM images as input and produces a PPM as output, with the images overlapping by \fIhorizontal_offset\fR pixels in blue/red format. The idea is that if you look at the image with 3-D glasses (glasses that admit only red through one eye and only green through the other), you see an image with depth. This is called a stereogram. .LP \fIhorizontal_offset\fR defaults to 30 pixels. The input PPMs must be the same dimensions. .LP To make a different kind of stereogram, use \fBpamstereogram\fR. That makes a steregram that you view without special glasses, just by letting your eyes unfocus so that each eye sees different parts of the image. .SH 2 SEE ALSO .LP pamstereogram ppm .SH 2 AUTHOR .LP Copyright (C) 1993 by David K. Drum. .br \l'5i' .SH 2 Table Of Contents .LP .IP \(bu NAME .IP \(bu SYNOPSIS .IP \(bu DESCRIPTION .IP \(bu SEE ALSO .IP \(bu AUTHOR .LP