Adobe Photoshop CS3 Manual de usuario descargar pdf (Pagina 405)

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PHOTOSHOP CS3

User Guide

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Apply the Color Halftone filter

1 Choose Filter > Pixelate > Color Halftone.

2 Enter a value in pixels for the maximum radius of a halftone dot, from 4 to 127.

3 Enter a screen-angle value (the angle of the dot from the true horizontal) for one or more channels:

• For Grayscale images, use only channel 1.

• For RGB images, use channels 1, 2, and 3, which correspond to the red, green, and blue channels.

• For CMYK images, use all four channels, which correspond to the cyan, magenta, yellow, and black channels.

• Click Defaults to return all the screen angles to their default values.

4 Click OK.

Apply the Extrude filter

1 Choose Filter > Stylize > Extrude.

2 Choose a 3D type:

• Blocks creates objects with a square front face and four side faces. To fill the front face of each block with the

averagecoloroftheblock,selectSolidFrontFaces.Tofillthefrontfacewiththeimage,deselectSolidFrontFaces.

• Pyramids creates objects with four triangular sides that meet at a point.

3 Enter a value in the Size text box to determine the length of any side of the object’s base, from 2 to 255 pixels.

4 EnteravalueintheDepthtextboxtoindicatehowfarthetallestobjectappearstoprotrudefromthescreen,from

1 to 255.

5 Choose a depth option:

• Random to give each block or pyramid an arbitrary depth.

• Level-based to make each object’s depth correspond to its brightness—bright protrudes more than dark.

6 Select Mask Incomplete Blocks to hide any object extending beyond the selection.

Apply the Trace Contour filter

1 Choose Filter > Stylize > Trace Contour.

2 Choose an Edge option to outline areas in the selection: Lower outlines areas where the color values of pixels fall

below the specified level, and Upper outlines areas where the color values fall above.

3 Enter a threshold (Level) for evaluating color values (tonal level), from 0 to 255. Experiment to see what values

bring out the best detail in the image.

Use the Info palette in Grayscale mode to identify a color value that you want traced. Then enter the value in the

Level text box.

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Adobe Photoshop CS3 Manual de usuario Pagina 405

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