9.3

Removing and deleting picture effects
The Picture Effects palette lets you temporarily remove an effect for experimentation
purposes, or delete effects from the list entirely.
• To remove an effect (without deleting it), uncheck it. You can check and uncheck effects
to experiment with different combinations.
•
To delete an effect, select it and click Delete Effect or press Backspace/Delete.
Displaying effects at full resolution
The Picture Effects feature displays pictures according to the current preview resolution.
You can change the resolution for a selected picture by choosing an option from the
Preview Resolution submenu (Item menu).
Picture Effects: Filters
Filters provide options that evaluate an entire picture or clusters of pixels and then modify
pixels based on context. If you're familiar with a filter or effect from another application,
you'll be comfortable with filter controls in QuarkXPress as well.
• The Despeckle filter 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.
• The Gaussian Blur filter 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.
• The Unsharp Mask filter 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.
• The Find Edges filter outlines the edges of a picture with dark lines against a white
background.
• The Solarize filter 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.
• The Diffuse filter shuffles pixels so the picture looks less focused. By default, the effect
applies to the picture and to the mask selected for the picture in the Item > Modify >
Picture tab.
• The Emboss filter makes areas of the picture appear raised or stamped.
• 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.
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PICTURES