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.You can adjust the brush size interactively by holding down Shift(Windows) or Command (Mac OS) while dragging in the image window.Removing dust and scratch marksYou can quickly improve the appearance of an image that has small dust and scratchmarks by applying a filter to the entire image.If an image has one or more scratchesin a specific area, you can create a mask around the scratches and apply the filter tothe editable areas.The 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 bythe changes.The settings you choose depend on the size of the blemish and the areasurrounding it.For example, if you have a white scratch that is 1 or 2 pixels wide on adark background, you can set a radius of 2 or 3 pixels and set the contrast thresholdhigher than if the same scratch was on a light background.If the scratch or blemish is fairly large or in an area of the image that has a variedcolor and texture, such as leaves on a tree, you can achieve better results by cloningimage areas.For information about cloning, see Cloning image areas on page 97.Retouching 95 To remove small dust and scratch marks throughout an image1 Click Image Correction Dust and scratch.2 Move the following sliders:Radius lets you set the range of pixels used to produce the effect.Set theradius as low as possible to retain image detail.Threshold lets you set the amount of noise reduction.Set the threshold ashigh as possible to retain image detail.You can remove small dust and scratch marks from an image by applyingthe Dust and scratch filter.To remove scratch marks from part of an image1 Define an editable area that includes the scratch marks.2 Click Image Correction Dust and scratch3 Move the following sliders:Radius lets you set the range of pixels used to produce the effect.Set theradius as low as possible to retain image detail.Threshold lets you set the amount of noise reduction.Set the threshold ashigh as possible to retain image detail.96 Corel PHOTO-PAINT User Guide You can remove scratches from specific areas by creating a mask around thescratches before applying the Dust and scratch filter.A dashed line orred-tinted overlay indicates the presence of a mask.You can use the Brush mask tool to define an editable area thatincludes the scratch mark.Choose a nib size that is wider than the scratchmark so you can brush over the scratch easily.For information about theBrush mask tool, see To define an editable area by freehand on page115.Feathering the edge of the editable area can improve results by softeningthe transition between the repaired areas and the original image.Forinformation about feathering, see To feather the edges of an editable area on page 202.Cloning image areasYou can copy pixels from one image area to another in order to cover damaged orunwanted elements in an image.For example, you can fix a tear or remove a personfrom an image by applying cloned pixels over the area you want to remove.You canalso clone image elements you like and apply them to another image area or a secondimage.If you clone an object, the newly cloned areas are added to the active object.You can also create abstract images, based on pixels sampled from the original image.When you clone, two brushes display in the image window: a source point brush anda clone brush that applies the copied pixels from the source point.A cross-hairdisplays in the source point brush to distinguish it from the clone brush.The sourcepoint brush moves relative to the clone brush as you drag across the image.theimage.Retouching 97 The Clone tool was used to remove the woman s necklace from the image.To clone an image area or object1 Open the Touch-up flyout , and click the Clone tool.2 On the property bar, open the Clone picker, and click Clone.3 Choose a brush from the Brush type list box.4 Click the image to set a source point for the clone.If you want to reset the source point, right-click the area you want to clone.5 Drag the clone brush in the image window to apply the pixels from the sourcepoint.You can alsoCreate abstract image areas based on pixels Click Impressionism clone orsampled from the source pointPointillism clone on the Clone pickerbefore dragging in the image window.Create multiple clones of an object Click the Cumulative button on theStroke attributes bar that displays in theBrush settings Docker window/palette.This option is available only for some of theEffect tools and the Clone tool.If theBrush settings Docker window/palette isnot open, click Window Dockers /Palettes Brush settings.98 Corel PHOTO-PAINT User Guide You can alsoClone an object and the background Click the Merge source button on thesimultaneouslyDab attributes bar that displays in theBrush settings Docker window/palette.This option is only available when theCumulative button is disabled.Sharpening imagesYou 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 brushstrokes.Filters can also be applied using a lens.For more information about lenses,see Working with lenses on page 105
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