.\" RCSid "$Id"
.TH LAMPCOLOR 1 11/15/93 RADIANCE
.SH NAME
lampcolor - compute spectral radiance for diffuse emitter
.SH SYNOPSIS
.B lampcolor
[
lamptable
]
.SH DESCRIPTION
.I Lampcolor
is an interactive program for computing the appropriate color
for a diffuse emitter.
From the total lumen output and a simple description of the fixture
geometry, the radiance for a diffuse fixture is calculated.
Since most light fixtures are not really diffuse, the preferred
method is to use luminaire distribution data (see
.I ies2rad(1)).
.PP
A table of lamp colors and depreciation factors is used to get
the color for a specific lamp type.
If "white" is specified, the lamp will be uncolored.
This is probably preferable for scenes with only a single variety
of lamp in order to produce color-balanced images.
.SH ENVIRONMENT
RAYPATH		Directories to check for lamp table
.SH FILES
lamp.tab		Default lamp lookup table
.SH AUTHOR
Greg Ward
.SH ACKNOWLEDGEMENT
Work on this program was initiated and sponsored by the LESO
group at EPFL in Switzerland.
.SH "SEE ALSO"
ies2rad(1)