Corel Painter 2015 Betriebsanweisung PDF herunterladen (Seite 594)

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566 | Corel Painter 2015 User Guide

To generate a channel based on luminance

1 In the Channels panel, do one of the following:

• To generate a new channel, choose the RGB channel from the list.

• To replace a channel, choose it from the list.

Click the Channel options button , and choose New From.

3 In the New From dialog box, choose one of the following options from the list box:

• Paper — uses the current paper texture to create the channel

• 3D Brush Strokes — creates a channel based on the difference between the current image and the

clone source. If no clone source is selected, Corel Painter uses the current pattern.

• Original Selection — works only when performing offset sampling between documents. It allows

you to create a channel in the sampling destination document that is based on a selection made

in the sampling source document. For best results, the dimensions of the source and destination

documents should match. You must establish a link between an offset sampling source and

destination document for this option to be available. For more information, see “Performing offset

sampling” on page 179.

• Image Luminance — creates a channel based on the current image’s light and dark areas. For Image

Luminance to be effective, the image must have high contrast. Images with low contrast produce a

semisolid channel, without clear delineation between the selected and protected areas.

• Original Luminance — produces a channel based on the clone source’s light and dark areas. This

option lets you import an image to the channel. If no clone source is selected, Corel Painter uses the

current pattern.

• Current Color — creates a channel based on pixels of the current main color. Areas of the current

color are protected; the rest of the image is selected. You might want to use the Dropper tool to pick

a color from the image before using the Current Color option.

If you want to invert the channel, enable the Invert check box.

Like a grayscale image, a channel can have 256 values in it. Inverting a channel is equivalent to

creating the negative of a grayscale image. For example, a pixel with 80% luminance will have

20% luminance when inverted. A pixel with 30% luminance will have 70% luminance when

inverted.

To generate a color-based channel

1 In the Channels panel, do one of the following:

• To generate a new channel, choose the RGB channel from the list.

• To replace a channel, choose it from the list.

Click the Channel options button , and choose New From Color Range.

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Kommentare zu diesen Handbüchern

Chriscof 29 Apr 2024 | 02:09:55

Hello, im noob :)

Corel Painter 2015 Betriebsanweisung Seite 594

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