.05.
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1. , ( ) ?
:
, ( ) ( ).
(, , . .) :
dpi (. dots per inch) .
ppi (. pixels per inch) .
lpi (. lines per inch) , ().
spi (. samples per inch) ; (sampling density),
2. JPEG .
:
() , , .
JPEG (Joint Photographic Experts Group) . , JPEG , , . . LAB, ( ). 8 x 8 . (). . .
JPEG , , . Web (200-300 dpi), (72-150 dpi), 8x8 , () . JPEG- , , . JPEG , () .
3. . RGB CMYK.
:
, : (RGB red, green, blue) (CMY cyan, magenta, yellow) .
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. RGB-
RGB (red, green, blue - , , ) , . , (. addition) . (, ), . , . .
, .
:
- + = (Y yellow)
- + = (M magenta)
- + = (C cyan)
- + + =
, (add - ) () - , .
( ), , . , 256 (R), 256 (G) 256 (B). , 256 256 256 = 16,7 .
