<!-- manual page source format generated by PolyglotMan v3.2, --> <!-- available at http://polyglotman.sourceforge.net/ --> <html> <head> <title>IM_RAD2FLOAT(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_rad2float, im_float2rad - convert RAD coded images to float and back <h2><a name='sect1' href='#toc1'>Synopsis</a></h2> #include <vips/vips.h> <p> int im_rad2float( IMAGE *in, IMAGE *out ) <p> int im_float2rad( IMAGE *in, IMAGE *out ) <p> <h2><a name='sect2' href='#toc2'>Description</a></h2> These functions convert <b>IM_CODING_RAD </b> images to 3-band float and back. <p> <a href='im_rad2float.3.html'><b>im_rad2float(3)</b></a> unpacks a 4-band uchar image in <b>IM_CODING_RAD</b> format to 3-band float. RAD images are used by the <a href='radiance.1.html'><b>radiance(1)</b></a> family of programs for HDR imaging. <p> Some VIPS operations will work directly on the packed RAD images (such as <a href='im_extract_area.3.html'><b>im_extract_area(3)</b></a> ) but many will require the image to be unpacked to 3-band float for processing. <p> <a href='im_float2rad.3.html'><b>im_float2rad(3)</b></a> packs a 3-band float image back to 4-band uchar in <b>IM_CODING_RAD</b> format. <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_LabQ2Lab.3.html'>im_LabQ2Lab(3)</a> , <a href='im_format.3.html'>im_format(3)</a> . <h2><a name='sect5' href='#toc5'>Author</a></h2> J. Cupitt - 23 March 2009 <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'>Author</a></li> </ul> </body> </html>
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