NAME
im_rad2float, im_float2rad - convert RAD coded images to float and back
SYNOPSIS
#include <vips/vips.h>
int im_rad2float( IMAGE *in, IMAGE *out )
int im_float2rad( IMAGE *in, IMAGE *out )
DESCRIPTION
These functions convert IM_CODING_RAD images to 3-band float and back.
im_rad2float(3) unpacks a 4-band uchar image in IM_CODING_RAD format to
3-band float. RAD images are used by the radiance(1) family of programs
for HDR imaging.
Some VIPS operations will work directly on the packed RAD images (such
as im_extract_area(3) ) but many will require the image to be unpacked
to 3-band float for processing.
im_float2rad(3) packs a 3-band float image back to 4-band uchar in
IM_CODING_RAD format.
RETURN VALUE
The functions return 0 on success and -1 on error.
SEE ALSO
im_LabQ2Lab(3), im_format(3).
AUTHOR
J. Cupitt - 23 March 2009
25 March 2009