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compamb (1)
NAME
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compamb - compute good ambient value for a rad input file |
SYNOPSIS
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compamb [ -c ][ -e ]
rad_input_file |
DESCRIPTION
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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. |
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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,
setting "QUALITY=High" to compute
interreflections. The resulting ambient file is thrown away,
since it would disagree with the new -av setting used for
the final renderings. This method is preferable to setting
the -aw option of rpict, which frequently
results in splotchy artifacts. |
AUTHOR
SEE ALSO
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