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<th colspan="3" align="center" id="chaptername">6.4. Destripe</th>
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<div class="sect2" lang="en" xml:lang="en">
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<div>
<div>
<h3 class="title"><a id="plug-in-destripe"></a>6.4. Destripe</h3>
</div>
</div>
</div>
<a id="id3362460" class="indexterm"></a>
<div class="mediaobject">
<img src="../images/filters/filters-enhance-destripe.png" />
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<div class="simplesect" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="id3362836"></a>Overview</h4>
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<p>
This filter is found in
<span class="guimenuitem">Image>Filters/Enhance/Des<span class="accel">t</span>ripe...</span>
</p>
<p>
It is used to remove vertical stripes caused by poor quality
scanners. It works by adding a pattern that will interfere with
the image, removing stripes if setting is good. This
"negative" pattern is calculated from vertical elements
of the image, so don't be surprised if you see stripes on the
preview of an image that has none. And if pattern
"strength" is too high, you image will be striped.
</p>
<p>
If, after a first pass, a stripe persists, rectangular-select it
and apply filter again (all other selection type may worsen the
result).
</p>
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<h4 class="title"><a id="id3362870"></a>Options</h4>
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<div class="variablelist">
<dl>
<dt>
<span class="term">Preview</span>
</dt>
<dd>
<p>
Parameter setting results are interactively displayed in
preview. Scroll bars allow you to move around the image.
</p>
</dd>
<dt>
<span class="term">Parameter setting</span>
</dt>
<dd>
<p>
</p>
<div class="itemizedlist">
<ul type="disc">
<li>
<p>
<span class="guilabel">Create histogram</span>: This "histogram"
is a black and white image showing the interference
pattern more legibly.
</p>
</li>
<li>
<p>
<span class="guilabel">Width</span>: Slider and input box allow
to set "strength" of filter (2-100): more than 60 is
rarely necessary and may create artifacts.
</p>
</li>
</ul>
</div>
<p>
</p>
<p>
A test image can be found at
<a href="http://www.goof.com" target="_top">www.goof.com</a>
</p>
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