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<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="plug-in-filter-pack"></a>3.17. Filter Pack</h3>
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</div>
<a id="id3358917" class="indexterm"></a>
<div class="mediaobject">
<img src="../images/filters/filters-color-filterpack.png" />
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<div class="simplesect" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="id3359723"></a>Overview</h4>
</div>
</div>
</div>
<p>
This filter is found in
<span class="guimenuitem">Image>Filters/Colors/<span class="accel">F</span>ilter Pack</span>
</p>
<p>
This tool offers you a collection of unified filters to treat the image. Of course, same functions
can be performed by particular filters, but you have here an interesting, intuitive, overview.
</p>
</div>
<div class="simplesect" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="id3359740"></a>Options</h4>
</div>
</div>
</div>
<div class="variablelist">
<dl>
<dt>
<span class="term">Before and After</span>
</dt>
<dd>
<p>
Two previews display respectively before treatment and after treatment images.
</p>
</dd>
<dt>
<span class="term">Show</span>
</dt>
<dd>
<p>
<span class="guilabel">Show</span> sets what you want to preview:
</p>
<div class="itemizedlist">
<ul type="disc">
<li>
<p>
<span class="guilabel">Entire image</span>
</p>
</li>
<li>
<p>
<span class="guilabel">Selection only</span>: if selection exists.
</p>
</li>
<li>
<p>
<span class="guilabel">Selection in context</span>: the selection within the image.
</p>
</li>
</ul>
</div>
</dd>
<dt>
<span class="term">Affected range</span>
</dt>
<dd>
<p>
<span class="guilabel">Affected Range</span> allows you to set which brightness you want to work with.
</p>
<div class="itemizedlist">
<ul type="disc">
<li>
<p>
<span class="guilabel">Shadows</span>: dark tones.
</p>
</li>
<li>
<p>
<span class="guilabel">Midtones</span>
</p>
</li>
<li>
<p>
<span class="guilabel">Highlights</span>: bright tones
</p>
</li>
</ul>
</div>
</dd>
<dt>
<span class="term">Select pixels by</span>
</dt>
<dd>
<p>
Determines what HSV channel the selected range will affect. You can choose between:
</p>
<div class="itemizedlist">
<ul type="disc">
<li>
<p>
<span class="guilabel">Hue</span>
</p>
</li>
<li>
<p>
<span class="guilabel">Saturation</span>
</p>
</li>
<li>
<p>
<span class="guilabel">Value</span>
</p>
</li>
</ul>
</div>
</dd>
<dt>
<span class="term">Roughness</span>
</dt>
<dd>
<p>
This slider sets how image will change when you click on a window: taking a short step or a
large one (0 - 1).
</p>
</dd>
<dt>
<span class="term">Windows</span>
</dt>
<dd>
<p>
You can choose between:
</p>
<div class="itemizedlist">
<ul type="disc">
<li>
<p>
<span class="guilabel">Hue</span> makes one preview for each color appear. By clicking successively
on a color, you add to this color into the affected range, according to Roughness. To
substract color, click on the opposite color.
</p>
</li>
<li>
<p>
<span class="guilabel">Saturation</span>: Three previews for more or less saturation.
</p>
</li>
<li>
<p>
<span class="guilabel">Value</span>: Three previews for more or less luminosity.
</p>
</li>
<li>
<p>
<span class="guilabel">Advanced</span>: developped later.
</p>
</li>
</ul>
</div>
</dd>
</dl>
</div>
<div class="variablelist">
<p class="title">
<b>Advanced Options</b>
</p>
<dl>
<dt>
<span class="term">Preview Size</span>
</dt>
<dd>
<p>
Something like a zoom on previews. Normal size is 80.
</p>
</dd>
<dt>
<span class="term">Smoothness of Aliasing</span>
</dt>
<dd>
<p>
This relates to the transition between
tones. When the slider
is set to zero, curve is rectangular and transition is abrupt. Small triangles
are used to locate transitions between tones.
</p>
</dd>
</dl>
</div>
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<th align="left">Tip</th>
</tr>
<tr>
<td colspan="2" align="left" valign="top">
<p>
In spite of Preview Size option, this size is often too small.
You can compensate this by working on an enlarged selection,
for instance a face on a photo. Then, you invert selection to
work on the other part of the image.
</p>
</td>
</tr>
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