RA_BN(1)                                                              RA_BN(1)



NNAAMMEE
       ra_bn - convert RADIANCE picture to/from Barneyscan image

SSYYNNOOPPSSIISS
       rraa__bbnn [ --gg ggaammmmaa ][ --ee ++//--ssttooppss ] { iinnppuutt||-- } [ oouuttppuutt ]
       rraa__bbnn --rr [ --gg ggaammmmaa ][ --ee ++//--ssttooppss ] iinnppuutt [ oouuttppuutt ]

DDEESSCCRRIIPPTTIIOONN
       _R_a___b_n  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  com-
       pensation  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.

AAUUTTHHOORRSS
       Greg Ward

SSEEEE AALLSSOO
       pfilt(1),   ra_bmp(1),   ra_ppm(1),   ra_pr(1),  ra_pr24(1),  ra_t8(1),
       ra_t16(1), ra_tiff(1), ximage(1)



RADIANCE                           11/15/93                           RA_BN(1)
