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ra_bn - convert RADIANCE picture to/from Barneyscan image
ra_bn [ -g gamma ][ -e +/-stops ] { input|- } [ output ]
ra_bn -r [ -g gamma ][ -e +/-stops ] input [ output ]
Ra_bn converts between RADIANCE and Barneyscan native RGB
image files. Since Barneyscan images are stored in three
files, one for each color component, only the root file name
is given and the program appends the suffixes "red", "grn"
and "blu". The -g option specifies the exponent used in
gamma correction; the default value is 2.0. An exponent of
1.0 turns gamma correction off. The -e option specifies an
exposure compensation in f-stops (powers of two). Only
integer stops are allowed, for efficiency. The -r option
invokes a reverse conversion, from a Barneyscan image to a
RADIANCE picture.
Greg Ward
pfilt(1), ra_ppm(1), ra_pr(1), ra_pr24(1), ra_t8(1),
ra_t16(1), ra_tiff(1), ximage(1)
Header and Footer
RA_BN(1) RADIANCE (11/15/93) RA_BN(1)
Page 1 (printed 7/17/96)
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