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<th colspan="3" align="center" id="chaptername">2.5. Motion Blur</th>
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<h3 class="title"><a id="filters-blur-mblur"></a>2.5. Motion Blur</h3>
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<h4 class="title"><a id="id3356622"></a>Overview</h4>
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This filter is found in
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<span class="guimenuitem">Image>Filters/Blur/<span class="accel">M</span>otion Blur</span>
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The Motion Blur filter creates a movement blur. The filter is capable
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of Linear, Radial, and Zoom movements. Each of these movements can be
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further adjusted, with Length, or Angle settings available.
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<h4 class="title"><a id="id3356708"></a>Options</h4>
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<span class="term">Blur Type</span>
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<span class="guilabel">Linear</span> motion is a blur that travels in a
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single direction, horizontally, for example. In this case,
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Length means as Radius in other filters:it represents the blur
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intensity. More Length will result in more blurring. Angle
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describes the actual angle of the movement. Thus, a setting of
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90 will produce a vertical blur, and a setting of 0 will
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produce a horizontal blur.
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<span class="guilabel">Radial</span> motion blur creates a circular
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blur. The Length slider is not important with this type of
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blur. Angle on the other hand, is the primary setting that will
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affect the blur. More Angle will result in more blurring in a
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circular direction. The Radial motion blur is similar to the
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effect of a spinning object. The center of the spin in this
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case, is the center of the image.
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<span class="guilabel">Zoom</span> blurring produces a blur that
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radiates out from the center of the image. The center of the
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image remains relatively calm, whilst the outer areas become
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blurred toward the center. This filter option produces a
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perceived forward movement, into the image. Length is the main
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setting here, and affects the amount of speed, as it were,
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toward the center of the image.
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<span class="term">Blur settings</span>
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<span class="guilabel">Length</span>: This slider controls the distance
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pixels are moved (0 - 256)
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<span class="guilabel">Angle</span>: (0 - 360) As seen above, Angle
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slider effect depends on Blur type.
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<td width="40%" align="left" valign="top">2.4. Selective Gaussian Blur </td>
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