<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <!--Converted with LaTeX2HTML 98.1p1 release (March 2nd, 1998) originally by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds * revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan * with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --> <HTML> <HEAD> <TITLE>Filtering</TITLE> <META NAME="description" CONTENT="Filtering"> <META NAME="keywords" CONTENT="vol2"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <LINK REL="STYLESHEET" HREF="vol2.css"> <LINK REL="next" HREF="node434.html"> <LINK REL="previous" HREF="node432.html"> <LINK REL="up" HREF="node423.html"> <LINK REL="next" HREF="node434.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html6847" HREF="node434.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html6844" HREF="node423.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html6838" HREF="node432.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html6846" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="icons.gif/contents_motif.gif"></A> <BR> <B> Next:</B> <A NAME="tex2html6848" HREF="node434.html">Image Creation and Extraction</A> <B> Up:</B> <A NAME="tex2html6845" HREF="node423.html">Commands Grouped by Subject</A> <B> Previous:</B> <A NAME="tex2html6839" HREF="node432.html">Image Arithmetic</A> <BR> <BR> <!--End of Navigation Panel--> <H2><A NAME="SECTION0024610000000000000000"> Filtering</A> </H2> <P> <PRE><TT> CONVOLVE/IMAGE Convolve image with given point spread function <BR> CREATE/FILTER Create filter image <BR> DECONVOLVE/IMAGE Deconvolve image with point spread function <BR> FILTER/GAUSS Use Gauss filter on image <BR> FILTER/MAX Apply maximum filter to an image <BR> FILTER/MEDIAN Median filter image <BR> FILTER/MIN Apply minimum filter to an image <BR> FILTER/SMOOTH Smooth an image <BR> FFT/IMAGE Compute discrete fourier transform of a complex <BR> input frame <BR> FFT/INVERSE Compute inverse discrete fourier transform of a <BR> complex input frame </TT></PRE> <P> <BR><HR> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>