Corel Painter 2015 Guide de l'utilisateur Page 704

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676 | Corel Painter 2015 User Guide
Applying the Sketch effect
You can use the Sketch effect to generate a black and white pencil outline of a photograph. You can then
use the outline as a guide for applying color, which is a useful technique for starting a painting. For more
information, see “Choosing a painting workflow” on page 124.
To store the settings for the effect, you can create a preset. This allows you to quickly apply the settings to
another image.
Before (left) and after (right) applying the Sketch effect.
To apply the Sketch effect
1 To apply the effect to:
The canvas — Click the Canvas in the Layers panel.
A selection — Click a selection tool from the toolbox, and drag in the document window to select an
area.
A layer — Click a layer in the Layers panel.
2
Choose Effects Surface Control Sketch.
3 In the Sketch dialog box, adjust any of the following sliders:
Sensitivity — determines sensitivity to detail. Low values detect only the main edges. High values
detect the main edges as well as thin lines, such as the lines around a person’s eyes.
Smoothing — determines how much noise is filtered out. Higher values result in wider, lighter, and
blurrier lines.
Grain — determines how much of the paper grain is revealed in the sketch marks. Move this slider to
the right to show more of the paper grain.
Threshold High and Threshold Low — removes noise after edge detection. Threshold High is used
to flag light pixels which may be just noise in the image. Threshold Low is used to test surrounding
pixels.
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Commentaires sur ces manuels

Chriscof 29 Apr 2024 | 04:09:55

Hello, im noob :)