Adobe 23101335 User Guide - Page 35

ADOBE PHOTOSHOP 6.0 25 User Guide (Photoshop) Extract part of an image The Extract Image command provides controls for isolating image areas with wispy or intricate edges. First, duplicate the layer containing the desired area, and select the duplicate layer in the Layers palette. Then choose Image > Extract. In the Extract dialog box, drag with the edge highlighter tool ( ) in the image preview to highlight the edges of the desired area. Then click inside the highlighted area with the fill tool ( ). Click OK to perform the extraction. All areas on the layer outside the extracted area are erased to transparency. Extracting an image area Mask part of a layer Layer masks let you selectively hide parts of a layer without permanently altering the layer. For example, you can create a mask that reveals a certain area of detail on a layer; the rest of the layer is hidden but still available behind the mask. In the Layers palette, select the layer that you want to mask, and click the New Layer Mask button ( ) at the bottom of the palette. Create the mask: • To add to the mask and hide more of the layer, use a painting tool to paint with black. (See "Painting" on page 26 for more information.) • To subtract from the mask and reveal more of the layer, paint with white. • To create a semitransparent mask, paint with gray. This is useful for partially hiding areas of the layer.