2020

PICTURES
Despeckle - Detects the edges in a picture and blurs all of the picture except •
those edges. It removes noise while preserving detail, and can be useful for
removing dust from a scanned image.
Gaussian Blur - Smoothes transitions by averaging pixels next to hard edges of •
defined lines and shaded areas in a picture. By checking Blur Picture and/or
Blur Mask, you can apply this filter separately to pictures and their alpha
masks..
Unsharp Mask - Compares pixel values in a defined area to the specified •
threshold value. If a pixel has a lower contrast value than the threshold value, its
contrast is increased.
Find Edges - Outlines the edges of a picture with dark lines against a white •
background.
Solarize - Blends negative and positive areas of a picture, producing a •
photographic solarization effect. To use the Solarize dialog box, enter a
Threshold value in the field or drag the slider. The value specifies which pixels
to modify - those with values lower than the threshold are considered negative
and those with values higher than the threshold are considered positive. The
pixel values are then inverted.
Diffuse - Shuffles pixels so the picture looks less focused. •
Emboss - Makes areas of the picture appear raised or stamped. •
Embossing Effects - When the Emboss filter is applied, you can specify the •
direction from which to raise or stamp the picture using the Embossing Effects
filter. Click the directional arrows in the Embossing Effects dialog box to apply
different directions. For example, clicking the upper-right arrow might specify
that when you pushed a stamp onto an object, you pushed slightly to the right,
smearing the stamp in that direction.
Edge Detection - Displays only edges of the picture, suppressing the remaining •
colors. The Edge Detection dialog box provides two mathematical methods for
determining edges: Sobel and Prewitt. The Sobel method might be more precise
because it considers more surrounding pixels in its calculations.
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