Despeckle Filter

 
 
 

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

Mode

Sets the element to be displayed and rendered. Select Image, Edge or Matte.

Radius

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.

Detect Type

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.

Min Level

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.

Scale

Sets the intensity with which edges are drawn. Enter a value using the slider. The higher the value, the greater the intensity.

Accuracy

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.

Mask

Controls this operator's Mask Options.

Output

Controls this operator's Output Options.

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