Performs an edge detect filter on the image, converts the result to a matte, then blurs the original image while using the
matte to protect the detected edges. This allows you to blur areas of low contrast, while maintaining the contour details
in an image ¦ useful for improving the general quality of grabbed or scanned images.
Requires an Input (Any).
Produces an Output (Any).
Filter
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Sets the element to be displayed and rendered. Select Image, Edge or Matte.
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Sets the size of the blur filter. Set a pixel value using the slider. The larger the Radius, the greater the blurring effect
of the filter.
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Sets the type of algorithm used for detecting edges. Select Sobel, Prewitt or Nevatia. Each algorithm produces a slightly
different effect; for example, Nevatia produces less noise in areas of low frequency.
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Sets the minimum change in intensity required to be detected as an edge. Set a value between 0 and 1 using the slider; the
higher the value, the greater the change in intensity required for an edge to be detected.
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Sets the intensity with which edges are drawn. Enter a value using the slider. The higher the value, the greater the intensity.
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Accuracy lets you change the range of samples used to approximate a Gaussian blur of a given radius. For high accuracy (e.g.,
90%) samples are taken over about twice the radius of the blur, while for the lowest accuracy (60%), samples are taken over
the radius of the blur.
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