RA_PR24(1)                                                          RA_PR24(1)



NNAAMMEE
       ra_pr24 - convert RADIANCE picture to/from 24-bit rasterfile

SSYYNNOOPPSSIISS
       rraa__pprr2244 [ --rr | --rrggbb ][ --gg ggaammmmaa ][ --ee ++//--ssttooppss ] [ iinnppuutt [ oouuttppuutt ] ]

DDEESSCCRRIIPPTTIIOONN
       _R_a___p_r_2_4  converts  between  RADIANCE and 24-bit pixrect rasterfile for-
       mats.  The _-_g option specifies the exponent used in  gamma  correction;
       the default value is 2.2.  An exponent of 1 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 24-bit rasterfile  to  a  RADIANCE
       picture.   If the _-_r_g_b option is used, the output rasterfile will be in
       RGB byte-ordering rather than the more standard (for Sun) BGR ordering.
       Byte  ordering  is determined automatically for the reverse conversion.
       If the output file is missing, the standard output  is  used.   If  the
       input file is missing as well, the standard input is used.

AAUUTTHHOORR
       Greg Ward

BBUUGGSS
       Only standard 24-bit color rasterfiles are read or written.

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



RADIANCE                           11/15/93                         RA_PR24(1)
