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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<!--Converted with LaTeX2HTML 98.1 release (February 19th, 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>Image Processing</TITLE>
<META NAME="description" CONTENT="Image Processing">
<META NAME="keywords" CONTENT="newxcv">
<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="newxcv.css">
<LINK REL="next" HREF="node9.html">
<LINK REL="previous" HREF="node7.html">
<LINK REL="up" HREF="newxcv.html">
<LINK REL="next" HREF="node9.html">
</HEAD>
<BODY >
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<A NAME="tex2html119"
HREF="node9.html">
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<BR>
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<H1><A NAME="SECTION00060000000000000000">
Image Processing</A>
</H1>
<P>
These are image operations where the input is an image, and the output is
an image, e.g. image enhancement. The operations can be linear, such as
Gaussian smoothing, or non-linear, such as morphology.
<P>
<P>
Selecting an operation from the Image Processing menu performs that operation
on the current active pane. The result of the operation is an image
which is placed at the end of the stack of images.
<P>
Load an image (the basement ones are good for the following).
<P>
Try any operation under ``Image-processing''. Note that these operations
are actually creating a new image that can be further processed. This new
image may be saved to disk using the <B>File
</B>
<!-- MATH: $\rightarrow\$ -->
<IMG
WIDTH="30" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
SRC="img1.gif"
ALT="$\rightarrow\ $">
menu item.
<P>
To get back to the original image, use PageUp and PageDown. If images appear to
look completely black, they may just be very dark.
<P>
<UL>
<LI><B>Enhance Lens</B>
<BR>
In the following example the enhance lens is used so that the original
and processed ROI can be compared.
<P>
From the original image, select <B>Display
</B>
<!-- MATH: $\rightarrow\$ -->
<IMG
WIDTH="30" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
SRC="img1.gif"
ALT="$\rightarrow\ $">
and select the image corresponding to the latest image processing. Holding
down the left mouse button on the image will now superimpose the results
of the operation on a small portion of the original image.
To switch of the enhance lens select <B>Display
</B>
<!-- MATH: $\rightarrow\$ -->
<IMG
WIDTH="30" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
SRC="img1.gif"
ALT="$\rightarrow\ $">
again.
<P>
<LI><B>Region of Interest</B>
<BR>
As image processing can take a long time, use a "region of interest" (ROI) to
quickly preview the results of an operation. Most operations are designed so
that they can operate on a ROI in the original image. This is useful if you
want to apply a time-consuming operation to a large image--you can first test it on a
small ROI, and then when the parameters are correct, apply it to the whole
image. To set the ROI use the menu item <B>Display
</B>
<!-- MATH: $\rightarrow\$ -->
<IMG
WIDTH="30" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
SRC="img1.gif"
ALT="$\rightarrow\ $">.
</UL>
<P>
<HR>
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<BR>
<B> Next:</B> <A NAME="tex2html120"
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HREF="newxcv.html">No Title</A>
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HREF="node7.html">Display</A>
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<ADDRESS>
<I>Karen McGaul</I>
<BR><I>2000-10-27</I>
</ADDRESS>
</BODY>
</HTML>

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