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- <title>2.3. Gaussian Blur</title>
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- <th colspan="3" align="center" id="chaptername">2. Blur filters</th>
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- <h3 class="title"><a id="plug-in-gauss"></a>2.3. Gaussian Blur</h3>
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- This filter is found in
- <span class="guimenuitem">Image>Filters/Blur/Gaussian Blur</span>
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- <p>
- The IIR Gaussian Blur plug-in acts on each pixel of the
- active layer or selection, setting its Value to the average
- of all pixel Values present in a radius defined in the
- dialog. A higher Value will produce a higher amount of
- blur. The blur can be set to act in one direction more than
- the other by clicking the Chain Button so that it is
- broken, and altering the radius. GIMP supports two
- implementations of Gaussian Blur: IIR G.B. and RLE G.B. They
- both produce the same results, but each one can be faster in
- some cases.
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- <h4 class="title"><a id="id3472252"></a>Options</h4>
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- <dl>
- <dt>
- <span class="term">Blur Radius</span>
- </dt>
- <dd>
- <p>
- Here you can set the blur intensity. By altering the ratio of horizontal to vertical blur, you can
- give the effect of a motion blur. You can choose the unit with the drop list.
- </p>
- </dd>
- <dt>
- <span class="term">Blur Method</span>
- </dt>
- <dd>
- <p>
- <span class="guilabel">IIR</span>: IIR stands for "Infinite Impulse
- Responce".This blur works best for large radius values and
- for images which are not computer generated.
- </p>
- <p>
- <span class="guilabel">RLE</span>: RLE stands for run-length
- encoding. RLE Gaussian Blur is best used on
- computer-generated images or those with large areas of
- constant intensity.
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