<!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>Association of images</TITLE> <META NAME="description" CONTENT="Association of images"> <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="node387.html"> <LINK REL="previous" HREF="node378.html"> <LINK REL="up" HREF="node371.html"> <LINK REL="next" HREF="node384.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html6217" HREF="node384.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html6214" HREF="node371.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html6208" HREF="node382.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html6216" 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="tex2html6218" HREF="node384.html">Creation of the Association</A> <B> Up:</B> <A NAME="tex2html6215" HREF="node371.html">The Data Organizer</A> <B> Previous:</B> <A NAME="tex2html6209" HREF="node382.html">Checking the quality of</A> <BR> <BR> <!--End of Navigation Panel--> <H1><A NAME="SECTION002250000000000000000"> Association of images</A> </H1> The association of scientific frames with suitable calibration images is achieved by selecting and ranking all calibration frames which for a given scientific exposure match a set of user defined selection criteria. One may expand the search by submitting a ``second choice'' set of criteria when too few frames match the original one. For instance, this may in natural language be expressed as: ``Find for each scientific frame 2 dark exposures which have been observed within the same night. If not found, look for dark exposures observed within 3 days.'' <BR><HR> <!--Table of Child-Links--> <A NAME="CHILD_LINKS"> </A> <UL> <LI><A NAME="tex2html6219" HREF="node384.html">Creation of the Association Rules</A> <LI><A NAME="tex2html6220" HREF="node385.html">An example of selection criteria</A> <LI><A NAME="tex2html6221" HREF="node386.html">Association of Calibration Exposures</A> </UL> <!--End of Table of Child-Links--> <BR><HR> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>
