71 lines
1.4 KiB
Groff
71 lines
1.4 KiB
Groff
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.TH IM_LAB2UCS 3 "2 December 1992"
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.SH NAME
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im_Lab2UCS, im_LabQ2XYZ, im_UCS2Lab, im_Lab2disp, im_disp2Lab, im_UCS2XYZ,
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im_XYZ2UCS \- derived colour space conversion functions
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.SH SYNOPSIS
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#include <vips/vips.h>
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int im_Lab2UCS(in, out)
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.br
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IMAGE *in, *out;
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int im_LabQ2XYZ(in, out)
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.br
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IMAGE *in, *out;
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int im_UCS2Lab(in, out)
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.br
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IMAGE *in, *out;
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int im_Lab2disp(in, out, display)
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.br
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IMAGE *in, *out;
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.br
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struct im_col_display *display;
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int im_disp2Lab(in, out, display)
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.br
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IMAGE *in, *out;
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.br
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struct im_col_display *display;
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int im_UCS2XYZ(in, out)
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.br
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IMAGE *in, *out;
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int im_XYZ2UCS(in, out)
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.br
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IMAGE *in, *out;
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.SH DESCRIPTION
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These functions are built on the basic VIPS colour space transformations as a
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convenience for the programmer. See im_Lab2XYZ(3) for an explanation of the
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colour spaces and the basic conversion functions.
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im_Lab2UCS(3), for example, is defined as:
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int
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im_Lab2UCS( IMAGE *in, IMAGE *out )
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{
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IMAGE *t1 = im_open_local( out,
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"im_Lab2UCS intermediate", "p" );
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if( !t1 ||
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im_Lab2LCh( in, t1 ) ||
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im_LCh2UCS( t1, out ) )
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return( -1 );
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return( 0 );
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}
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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_col_XYZ2rgb(3), im_dE_fromLab(3), im_LabQ2Lab(3), im_Lab2disp(3).
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.SH COPYRIGHT
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National Gallery and Birkbeck College, 1990 - 1993
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.SH AUTHOR
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K. Martinez \- 2/12/1992
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.br
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J. Cupitt \- 21/7/93
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