39 lines
930 B
Groff
39 lines
930 B
Groff
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.TH IM_RAD2FLOAT 3 "25 March 2009"
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.SH NAME
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im_rad2float, im_float2rad \- convert RAD coded images to float and back
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.SH SYNOPSIS
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#include <vips/vips.h>
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int im_rad2float( IMAGE *in, IMAGE *out )
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int im_float2rad( IMAGE *in, IMAGE *out )
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.SH DESCRIPTION
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These functions convert
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.B IM_CODING_RAD
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images to 3-band float and back.
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.B im_rad2float(3)
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unpacks a 4-band uchar image in
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.B IM_CODING_RAD
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format to 3-band float. RAD images are used by the
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.B radiance(1)
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family of programs for HDR imaging.
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Some VIPS operations will work directly on the packed RAD images (such as
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.B im_extract_area(3)
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) but many will require the image to be unpacked to 3-band float for
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processing.
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.B im_float2rad(3)
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packs a 3-band float image back to 4-band uchar in
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.B IM_CODING_RAD
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format.
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.SH RETURN VALUE
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The functions return 0 on success and -1 on error.
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.SH SEE ALSO
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im_LabQ2Lab(3), im_format(3).
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.SH AUTHOR
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J. Cupitt \- 23 March 2009
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