5Drag the clone brush in the image window to apply the pixels from the source point.

You can also

Create abstract image areas based on pixels	Click Impressionism clone		or
sampled from the source point	Pointillism clone	on the Clone picker
	before dragging in the image window.
Create multiple clones of an object	Click the Cumulative button		on the

Stroke attributes bar that displays in the Brush settings docker. This option is available only for some of the Effect tools and the Clone tool. If the Brush settings docker is not open, click Window `

Dockers ` Brush settings.

Clone an object and the background simultaneously

Click the Merge source button on the Dab attributes bar that displays in the Brush settings docker. This option is only available when the Cumulative button is disabled.

Sharpening images

You can sharpen images to increase contrast, enhance image edges, or reduce shading. To sharpen an image, or an editable area of an image, you can use filters or brush strokes. Filters can also be applied using a lens. For more information about lenses, see “Working with lenses” on page 409. Sharpening is usually done after adjusting the color and tone of an image and after resampling or resizing.

Corel PHOTO-PAINT: Retouching

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You can reveal more image detail by sharpening an image.

To sharpen an image by applying a filter

1Click Image ` Correction ` Tune sharpen.

2Move the Percentage slider to set the amount of sharpening that is applied each time you click a thumbnail button.

3Click any of the following thumbnail buttons:

• Unsharp mask — lets you accentuate edge detail and focus blurred areas in the

image without removing low-frequency areas.

•Adaptive unsharp — lets you accentuate edge detail by analyzing the values of neighboring pixels. This filter preserves most image detail, but its effect is most apparent in high-resolution images.

•Sharpen — lets you accentuate the edges of the image by focusing blurred areas and increasing the contrast between neighboring pixels. Move the Background

slider to set the threshold for the effect. Lower values increase the number of pixels changed by the sharpening effect.

• Directional sharpen — lets you enhance the edges of an image without creating a grainy effect.

404	CorelDRAW Graphics Suite 12 User Guide