Mage To Another

What You'll Do

In this lesson, you'll use the Invert check box in the Color Range dialog box to make a selection, drag the selection to another image, and remove the fringe from a selection using the Defringe command.

Understanding Selections

Often the Photoshop file you want to create involves using an image or part of an image from another file. To use an image or part of an image, you must first select it. Photoshop refers to this as "making a selection." A selection is an area of an image surrounded by a marquee, a dashed line that surrounds the area you want to edit or move to another image, as shown in Figure 11. You can drag a marquee around a selection using four marquee tools: Rectangular Marquee, Elliptical Marquee, Single Row Marquee, and Single Column Marquee. Table 1 displays the four marquee tools and other selection tools. You can set options for each tool on the options bar when the tool you want to use is active.

Understanding the Extract and Color Range Commands

In addition to using selection tools, Photoshop provides other methods for incorporating imagery from other files. The Extract command, located on the Filter menu, separates an image from a background or surrounding imagery. You can use the Color Range command, located on the Select menu, to select a particular color contained in an existing image. Depending on the area you want, you can use the Color Range dialog box to extract a portion of an image.

Cropping an image

You might find an image that you really like, except that it contains a particular portion that you don't need. You can exclude, or crop, certain parts of an image by using the Crop Tool on the toolbox. Cropping hides areas of an image from view without losing resolution quality. To crop an image, click the Crop Tool on the toolbox, drag the pointer around the area you want to keep, then press [Enter] (Win) or [return] (Mac).

For example, you can select the Invert check box to choose one color and then select the portion of the image that is every color except that one. After you select all the imagery you want from another image, you can drag it into your open file.

Making a Selection and Moving a Selection

You can use a variety of methods and tools to make a selection, which can be used as a specific part of a layer or as the entire layer.

FIGURE 11

Marquee selections

You use selections to isolate an area you want to alter. For example, you can use the Magnetic Lasso Tool to select complex shapes by clicking the starting point, tracing an approximate outline, then clicking the ending point. Later, you can use the Crop Tool to trim areas from a selection. When you use the Move Tool to drag a selection to the destination image, Photoshop places the selection in a new layer above the previously active layer.

FIGURE 11

Marquee selections

Area selected using the Rectangular Marquee Tool

Defringing Layer Contents

Sometimes when you make a selection, then move it into another image, the newly selected image can contain unwanted pixels that give the appearance of a fringe, or halo. You can remove this effect using a Matting command called Defringe. This command is available on the Layers menu and allows you to replace fringe pixels with the colors of other nearby pixels. You can determine a width for replacement pixels between 1 and 200. It's magic!

Specific element selected using the Magnetic Lasso Tool
TABLE 1: Selection Tools

tool

tool name

tool

tool name

o

Rectangular Marquee Tool

e

Lasso Tool

Q

Elliptical Marquee Tool

Polygonal Lasso Tool

C.-J

Single Row Marquee Tool

*

Magnetic Lasso Tool

i b

Single Column Marquee Tool

Eraser Tool

%

Crop Tool

Background Eraser Tool

\

Magic Wand Tool

Magic Eraser Tool

Make a color range selection

1. Open PS 2-2.psd from the drive and folder where your Data Files are stored, save it as Gourds, click the title bar, then drag the window to an empty area of the workspace so that you can see both images.

TIP When more than one file is open, each has its own set of rulers.

Click Select on the menu bar, then click Color Range.

TIP If the background color is solid, you can select the Invert check box to pick only the pixels in the image area.

3. Click the Image option button, then type 0 in the Fuzziness text box (or drag the slider all the way to the left until you see 0).

4. Position the Eyedropper pointer ^ in the white background of the image in the Color Range dialog box, then click the background.

5. Select the Invert check box. Compare your dialog box to Figure 12.

6. Click OK, then compare your Gourds.psd image to Figure 13.

You opened a file and used the Color Range dialog box to select the image pixels by selecting the image's inverted colors. Selecting the inverse is an important skill in making selections.

FIGURE 12

Color Range dialog box

FIGURE 12

Color Range dialog box

Fuzziness text box

Invert check box

Marquee surrounds everything that is the inverse of the white background

Using the Place command

You can add an image from another image to a layer using the Place command. Place an image in a Photoshop layer by clicking File on the menu bar, then clicking Place. The placed artwork appears inside a bounding box at the center of the Photoshop image. The artwork maintains its original aspect ratio; however, if the artwork is larger than the Photoshop image, it is resized to fit.

Fuzziness text box

Invert check box

FIGURE 13

Marquee surrounding selection

FIGURE 13

Marquee surrounding selection

Marquee surrounds everything that is the inverse of the white background

FIGURE 14

Gourds image dragged to New England Fall image

FIGURE 14

Gourds image dragged to New England Fall image

FIGURE 15

Gourds layer defringed

FIGURE 15

Gourds layer defringed

Gourds moved to active layer in image

Gourds object in image

Gourds moved to active layer in image

Move a selection to another image

1. Click the Move Tool H on the toolbox.

2. Position the Move Tool pointer ^ anywhere over the selection in the Gourds image.

3. Drag the selection to the New England Fall image, then release the mouse button.

The Gourds image moves to the New England Fall file appearing on Layer 1.

4. If necessary, use the Move Tool pointer to drag the gourds to the location at the lower-left corner of the wreath.

5. Click the triangle in the document window status bar , point to Show, then click Document Sizes. Compare your image to Figure 14.

You dragged a selection from one image to another. You displayed the document size in the window.

Defringe the selection

1. Click Layer on the menu bar, point to Matting, then click Defringe. Defringing a selection gets rid of the halo effect that sometimes occurs when objects are dragged from one image to another.

2. Type 2 in the Width text box, then click OK.

3. Save your work.

4. Close Gourds.psd, then compare the New England Fall image to Figure 15.

You removed the fringe from a selection.

What You'll Do

group, and then add layers to it. You'll add finishing touches to the image, save it as a copy, then flatten it.

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