<area shape="rect" href="$a00015.html" title="A virtual class for doing differences with sub&#45;pixel vectors." alt="" coords="31,267,159,293">
<area shape="rect" href="$a00010.html" title="An abstract class for doing block difference calculations." alt="" coords="39,189,151,216">
<area shape="rect" href="$a00109.html" title="A class for picture component data." alt="" coords="40,83,149,109">
<area shape="rect" href="$a00132.html" title="A template class for two&#45;dimensional arrays." alt="" coords="5,5,184,32">
