if #argv = (this OR that) then... Post: 302179893

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compamb

COMPAMB(1)						      General Commands Manual							COMPAMB(1)

NAME

       compamb - compute good ambient value for a rad input file

SYNOPSIS

       compamb [ -c ][ -e ] rad_input_file

DESCRIPTION

       Compamb	computes a good ambient value for the specified rad(1) variable file and appends it to the file as a "render= -av" option.  If the
       -c option is specified, then compamb includes color information in the computed ambient value, rather than estimating a grey value to avoid
       rendering  color shifts.  If the -e option is specified, then compamb also computes a good exposure value for this scene, and appends it to
       the rad file as well.

       Compamb is a shell script that makes calls to other RADIANCE programs and utilities to do the actual work.  A substantial  amount  of  time
       may  be	required to complete this script, since compamb calls rpict(1) to render low resolution frames for each view in the rad file, set-
       ting "QUALITY=High" to compute interreflections.  The resulting ambient file is thrown away, since it would disagree with the new -av  set-
       ting  used  for	the  final renderings.	This method is preferable to setting the -aw option of rpict, which frequently results in splotchy
       artifacts.

AUTHOR

       Greg Ward Larson

SEE ALSO

       lookamb(1), rad(1), rpict(1)

RADIANCE
							      1/23/98								COMPAMB(1)

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