Color and Resolution Introduction to Digital Imaging.

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Presentation transcript:

Color and Resolution Introduction to Digital Imaging

page 2 Introduction to Digital Imaging Colby Caldwell The Display of Color Red, Green, Blue (RGB) primary (additive) light colors Cyan, Yellow, Magenta, Black (CMYK) secondary (subtractive) reflected colors

page 3 Introduction to Digital Imaging Colby Caldwell The Display of Color >Monitor On a monitor, color is represented with emitted light, as varying intensities of the three primary (additive) light colors: red, green, and blue in (RGB) color.

page 4 Introduction to Digital Imaging Colby Caldwell The Display of Color >Print In print, color is represented as light reflecting off ink, in the secondary (subtractive) colors of cyan, magenta, and yellow (CMYK) the result of combining pairs of primary colors.

page 5 Introduction to Digital Imaging Colby Caldwell CMYK Pattern (magnified)

page 6 Introduction to Digital Imaging Colby Caldwell Digital Images >Bitmap Images (Rastor Images) >Vector Images

page 7 Introduction to Digital Imaging Colby Caldwell Bitmap Images

page 8 Introduction to Digital Imaging Colby Caldwell Vector Images

page 9 Introduction to Digital Imaging Colby Caldwell Vector Images

page 10 Introduction to Digital Imaging Colby Caldwell Resolution >Image Resolution Number of pixels (in both height and width) making up an image. The higher the resolution of an image, the greater its clarity and definition. >Output Resolution The number of dots per inch (dpi) used to display an image on a display device (monitor) or in print.

page 11 Introduction to Digital Imaging Colby Caldwell Resolution: Units of Measure >Pixel The picture elements that make up an image, similar to grains in a photograph or dots in a half-tone. Each pixel can represent a number of different shades or colors, depending upon how much storage space is allocated for it. >DPI Dots per inch. A measurement of the scanning resolution of an image or the quality of an output device. Expresses the number of dots a printer can print per inch, or monitor can display, both horizontally and vertically. A 600-dpi printer can print 360,000 (600 x 600) dots on one square inch of paper.

page 12 Introduction to Digital Imaging Colby Caldwell Resolution and Scale