Operation Manual

546 | CorelDRAW X8 User Guide

4 Choose an option from the Target output list box.

5 Type a value in the Watermark durability box.

Higher values increase the persistence of the watermark under common image modifications such as dithering, cropping, compression,

and scaling.

If you want to confirm the information available to viewers when they detect the watermark, enable the Verify check box.

This feature is not supported by the 64-bit version of CorelDRAW Graphics Suite.

In the Copyright year(s) box, you cannot type a year before 1922 or after the current year. Separate the years with commas.

In the Target output box, the Monitor and Web controls require a setting of less than 200 per inch (dpi), and the Printer control

requires a setting of 300 dpi or higher.

Combine all objects with the background before adding a watermark. For more information about combining objects with the

background, see “Combining objects” on page 243.

Removing dust and scratch marks from bitmaps

You can quickly improve the appearance of a bitmap by removing dust and scratch marks. The dust and scratch filter works by eliminating

the contrast between pixels that exceed the contrastthreshold you set. You can set a radius to determine how many pixels are affected by

the changes. The settings you choose depend on the size of the blemish and the area surrounding it. For example, to remove a white scratch

that is 1 or 2 pixels wide on a dark background, you can set a radius of 2 or 3 pixels and set the contrast threshold higher than you would

for a similar scratch on a light background.

To remove dust and scratch marks from a bitmap

Click Effects Correction Dust and scratch.

2 Move the following sliders:

• Radius — sets the range of pixels used to produce the effect. To retain image detail, choose a setting as low as possible.

• Threshold — sets the amount of noise reduction. To retain image detail, choose a setting as high as possible.

Applying special effects in bitmaps

You can apply a wide range of special effects to bitmaps, such as three-dimensional (3D) and artistic effects.

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Special effect category Description

3D Effects Lets you create the illusion of depth. Effects include Emboss, Page

Curl, and Perspective.

Art Strokes Lets you apply hand-painted techniques. Effects include Crayon,

Impressionist, Pastels, Watercolor, and Pen & Ink.

Blur Lets you blur an image to simulate movement, speckling, or

gradual change. Effects include Gaussian Blur, Motion Blur, Smart

Blur, and Zoom.