9-2-2 Multimedia application
Multimedia technology and graphics processing are applied and utilized in
various fields.
1
Graphics processing
“Graphics processing” is a task involving the display, processing, and
storing of loaded images. In order to implement graphics processing, it is
necessary to have an understanding of color and image quality.
(1)Color representation
“RGB” and “CMYK” color models are used for displaying color on display devices and for printing in color.
●Three primary colors of light (RGB)
When displaying color on display devices, a single dot is comprised of the
three colored lights Red (R), Green (G) and Blue (B). All colors are reproduced by adding together R, G and B light in varying degrees. When all
three are combined, white is produced. When all three are at zero intensity,
black is produced.
Three primary colors of light (RGB)
Red (R)
Yellow
Magenta
White
Green (G)
Cyan
Blue (B)
●Three primary process colors (CYMK)
When printing in color, the colors are created by mixing Cyan (C), Magenta (M), and Yellow (Y). When C, M, and Y are mixed, black is produced.
For a solid black, Black (K) is added to create CMYK ink.
Three primary process colors (CYMK)
Black (K)
Cyan
(C)
Blue
Magenta
(M)
243
Green
Red
Yellow
(Y)