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Ra_pr24 converts between RADIANCE and 24-bit pixrect
rasterfile formats. 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 -rgb 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. |
