NAME

       lampcolor - compute spectral radiance for diffuse emitter

SYNOPSIS

       lampcolor [ lamptable ]

DESCRIPTION

       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
       ies2rad(1)).

       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.

ENVIRONMENT

       RAYPATH        Directories to check for lamp table

FILES

       lamp.tab       Default lamp lookup table

AUTHOR

       Greg Ward

ACKNOWLEDGEMENT

       Work on this program was initiated and sponsored by the LESO group at EPFL in Switzerland.

SEE ALSO

       ies2rad(1)