2 In the Indexed Color dialog box, choose an option for the color table: 3 Depending on which method you select, the Colors area in the dialog box displays information about how the color table is com- puted. Choose the option you want, if necessary: 4 Choose a color-distribution option in the Dither area: Exact Creates a color table from the colors in the image, if the image contains 256 colors or less; otherwise, this option isn’t available Uniform/ System Creates a color table based on the operating sys- tem’s palette of 256 colors (System), or a subset of these colors (Uniform) Adaptive Creates a color table from the most frequently used colors in the image Custom Lets you create a color table, load, and save color table files. Previous Applies the last color table used in the Indexed Color dialog box during the current Canvas session Exact If you choose Exact, the Colors area displays the number of colors in the selected image Uniform/ System If you choose System, the Colors area displays the number of colors in the operating system’s palette; if you choose Uniform, a pop-up menu that lets you select 8, 27, 64, 125, 216, or 256 colors appears Adaptive If you choose Adaptive, the Colors area displays a text box that lets you enter a number of colors from 2 to 256 Custom If you choose Custom, the Colors area displays “Cus- tom colors” Previous If you choose Previous, the Colors area displays the number of colors in the last color table created by the Indexed Color dialog box during the current Canvas session None Changes colors to their closest equivalent in the selected color table without dithering Pattern Approximates colors not in the palette by arranging palette color in geometric patterns (available for Uni- form/System method only)
Canvas 8 Help: Painting and image-editing (38 of 46)                                                Page #624