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<title>IM_LAB2UCS(3) manual page</title>
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<a href='#toc'>Table of Contents</a><p>
<h2><a name='sect0' href='#toc0'>Name</a></h2>
im_Lab2UCS, im_LabQ2XYZ, im_UCS2Lab, im_Lab2disp, im_disp2Lab, im_UCS2XYZ,
im_XYZ2UCS - derived colour space conversion functions
<h2><a name='sect1' href='#toc1'>Synopsis</a></h2>
#include
<vips/vips.h>
<p> int im_Lab2UCS(in, out) <br>
IMAGE *in, *out;
<p> int im_LabQ2XYZ(in, out) <br>
IMAGE *in, *out;
<p> int im_UCS2Lab(in, out) <br>
IMAGE *in, *out;
<p> int im_Lab2disp(in, out, display) <br>
IMAGE *in, *out; <br>
struct im_col_display *display;
<p> int im_disp2Lab(in, out, display) <br>
IMAGE *in, *out; <br>
struct im_col_display *display;
<p> int im_UCS2XYZ(in, out) <br>
IMAGE *in, *out;
<p> int im_XYZ2UCS(in, out) <br>
IMAGE *in, *out;
<p>
<h2><a name='sect2' href='#toc2'>Description</a></h2>
These functions are built on the basic VIPS
colour space transformations as a convenience for the programmer. See <a href='im_Lab2XYZ.3.html'>im_Lab2XYZ(3)</a>
for an explanation of the colour spaces and the basic conversion functions.
<p> <a href='im_Lab2UCS.3.html'>im_Lab2UCS(3)</a>
, for example, is defined as:
<p> int<br>
im_Lab2UCS( IMAGE *in, IMAGE *out )<br>
{<br>
IMAGE *t1 = im_open_local( out, <br>
"im_Lab2UCS intermediate", "p" );<br>
<br>
if( !t1 || <br>
im_Lab2LCh( in, t1 ) || <br>
im_LCh2UCS( t1, out ) )<br>
return( -1 );<br>
<br>
return( 0 );<br>
}<br>
<p>
<h2><a name='sect3' href='#toc3'>Return Value</a></h2>
The functions return 0 on success and -1 on error.
<h2><a name='sect4' href='#toc4'>See Also</a></h2>
<a href='im_col_XYZ2rgb.3.html'>im_col_XYZ2rgb(3)</a>
,
<a href='im_dE_fromLab.3.html'>im_dE_fromLab(3)</a>
, <a href='im_LabQ2Lab.3.html'>im_LabQ2Lab(3)</a>
, <a href='im_Lab2disp.3.html'>im_Lab2disp(3)</a>
.
<h2><a name='sect5' href='#toc5'>Copyright</a></h2>
National Gallery
and Birkbeck College, 1990 - 1993
<h2><a name='sect6' href='#toc6'>Author</a></h2>
K. Martinez - 2/12/1992 <br>
J. Cupitt - 21/7/93 <p>
<hr><p>
<a name='toc'><b>Table of Contents</b></a><p>
<ul>
<li><a name='toc0' href='#sect0'>Name</a></li>
<li><a name='toc1' href='#sect1'>Synopsis</a></li>
<li><a name='toc2' href='#sect2'>Description</a></li>
<li><a name='toc3' href='#sect3'>Return Value</a></li>
<li><a name='toc4' href='#sect4'>See Also</a></li>
<li><a name='toc5' href='#sect5'>Copyright</a></li>
<li><a name='toc6' href='#sect6'>Author</a></li>
</ul>
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