<!-- manual page source format generated by PolyglotMan v3.2, --> <!-- available at http://polyglotman.sourceforge.net/ --> <html> <head> <title>IM_CONV(3) manual page</title> </head> <body bgcolor='white'> <a href='#toc'>Table of Contents</a><p> <h2><a name='sect0' href='#toc0'>Name</a></h2> im_lowpass - remove high frequencies quickly <h2><a name='sect1' href='#toc1'>Synopsis</a></h2> #include <vips/vips.h> <p> int im_lowpass(in, out, x, y) <br> IMAGE *in, *out; <br> int x, y; <h2><a name='sect2' href='#toc2'>Description</a></h2> Expand image up to X by Y pixels. Linear interpolation. Used by <a href='lowpass.1X.html'>lowpass(1X)</a> for simple and nasty low-pass filtering. The result is very poor, but good enough for smoothing out whites. Any number of bands, output size == input size, any non-complex type. <p> <h2><a name='sect3' href='#toc3'>Return Value</a></h2> The function returns 0 on success and -1 on error. <h2><a name='sect4' href='#toc4'>See Also</a></h2> <a href='im_shrink.3.html'>im_shrink(3)</a> , <a href='im_similarity_area.3.html'>im_similarity_area(3)</a> . <h2><a name='sect5' href='#toc5'>Copyright</a></h2> <br> National Gallery <h2><a name='sect6' href='#toc6'>Author</a></h2> Too embarrassed to say <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'>SeeAlso</a></li> <li><a name='toc5' href='#sect5'>Copyright</a></li> <li><a name='toc6' href='#sect6'>Author</a></li> </ul> </body> </html>
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