<!-- manual page source format generated by PolyglotMan v3.2, --> <!-- available at http://polyglotman.sourceforge.net/ --> <html> <head> <title>SHRINK(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_shrink - shrink an image <h2><a name='sect1' href='#toc1'>Synopsis</a></h2> #include <vips/vips.h> <p> int im_shrink(in, out, xfactor, yfactor) <br> IMAGE *in, *out; <br> double xfactor, yfactor; <p> int im_resize_linear(in, out, X, Y) <br> IMAGE *in, *out; <br> int X, Y; <p> <h2><a name='sect2' href='#toc2'>Description</a></h2> <p> <a href='im_shrink.3.html'><b>im_shrink(3)</b></a> shrink the input image file by <b>xfactor </b> along the horizontal and <b>yfactor </b> along the vertical direction. The function does not perform subpixel interpolation and therefore the resultant image can present aliasing especially for small x and y factors. Any size image, any non-complex type, any number of bands. <p> <a href='im_resize_linear.3.html'><b>im_resize_linear(3)</b></a> resizes the image to be <b>X</b> by <b>Y</b> pixels. It is slow, only does bilinear interpolation (and so will be inaccurate for factors greater than two), and uses WIO, so it has a 2GB image size limit and will use large amounts of memory. Use <a href='im_shrink.3.html'><b>im_shrink(3)</b></a> in preference if possible. <p> <h2><a name='sect3' href='#toc3'>Return Value</a></h2> The functions returns 0 on success and -1 on error. <h2><a name='sect4' href='#toc4'>See Also</a></h2> <a href='im_affine.3.html'>im_affine(3)</a> <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> </ul> </body> </html>