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ADOBE INDESIGN CS2 REVEALED- P21

ADOBE INDESIGN CS2 REVEALED- P21:Welcome to Adobe InDesign CS2—Revealed. This book offers creative projects, concise instructions, and complete coverage of basic to advanced InDesign skills, helping you to create polished, professional-looking layouts. Use this book as you learn InDesign, and then use it later as your own reference guide. | LESSON 1 COLORIZE A GRAYSCALE IMAGE What You ll Do In this lesson you will explore techniques for colorizing both the light and dark areas of a placed grayscale image. Defining a Grayscale Image A grayscale image is a digital image reproduced using only one color. In most cases that color is black. The image is reproduced using 256 shades of black from light to dark. Thus the term grayscale has become synonymous with a black and white image. In Photoshop grayscale is a color mode just like RGB or CMYK. When you convert a file from RGB or CMYK mode to grayscale mode the image appears as black and white. Figure 1 shows two Photoshop files one in CMYK mode and one in grayscale mode. When this book was printed the CMYK image was printed using all four process inks the grayscale image was printed using only black ink. Colorizing Grayscale Images in InDesign When you place a grayscale image from Photoshop in InDesign you can apply InDesign swatches to it to colorize the graphic. You have the option of applying one swatch color to the light areas of the graphic the highlights and another to the dark areas the shadows. To colorize the light areas select the graphics frame with the Selection Tool and then apply a fill color to the frame. The highlights of the grayscale graphic will change to the fill color. Figure 2 shows a grayscale graphic in which the highlights have been colorized with yellow. INDESIGN 8-4 Working with Transparency QUICKTIP In order to colorize a grayscale image in InDesign it must be saved as a .tif file or a .psd file Photoshop s native file format . To colorize the dark areas of the graphic you must select the graphic with the Direct Selection Tool. Once the graphic is selected clicking a swatch in the Swatches palette colorizes the dark areas of the graphic. Figure 3 shows the same graphic with a red swatch applied to the dark areas. FIGURE 1 A CMYK and a grayscale image FIGURE 3 Colorizing the dark areas of a placed grayscale graphic FIGURE 2 .