Color mixing: addition & Subtraction
22
COLOR MIXING: ADDITION & SUBTRACTION Physics Arrowhead High School 2013 – 2014
description
Color mixing: addition & Subtraction. Physics Arrowhead High School 2013 – 2014. Color Addition. Primary Transmission Colors Red, Green & Blue Pixels on a screen Colors produced on a screen depend on the intensity of each colored pixel - PowerPoint PPT Presentation
Transcript of Color mixing: addition & Subtraction
COLOR MIXING:ADDITION & SUBTRACTIONPhysicsArrowhead High School2013 – 2014
Color Addition• Primary Transmission Colors
• Red, Green & Blue• Pixels on a screen• Colors produced on a screen depend
on the intensity of each colored pixel• Colors absorbed by the eye’s cones
peak at Red, Green & Blue
Color Addition – White Screen
R G B
Inte
nsity
Color Addition – Red Screen
R G B
Inte
nsity
Color Addition – Blue Screen
R G B
Inte
nsity
Color Addition – Gray Screen
R G B
Inte
nsity
Color Addition – Yellow Screen
R G B
Inte
nsity
Color Addition – Orange Screen
R G B
Inte
nsity
Color Addition – Teal Screen
R G B
Inte
nsity
Color Addition – Color Wheel
Blue
Green
Red
Yellow
Magenta
Cyan
Color Addition - PracticeRED BLUE GREEN
1 2 3 4 5
1. R + 0 = Red2. R + B = Magenta3. R + G + B = White4. B + G = Cyan5. G + 0 = Green
Color Addition - PracticeRED
BLUE GREEN
1 2 3 4 5
1. B + 0 = Blue2. B + R = Magenta3. B + R + G = White4. R + G = Yellow5. G + 0 = Green
Color Subtraction• Primary Absorption Colors
• Magenta, Cyan, Yellow & Black• Printer Ink Colors• These colors reflect the
transmission colors that make them up and absorb the others
• Intensity controlled by amount of ink used• Number of dots printed• Size of dots printed
Color Subtraction
Color Subtraction
Color Subtraction – Cyan Visible1. Cyan ink is printed
on white paper2. White light (RGB)
shines on the paper3. The cyan ink absorbs
red and reflects green and blue
4. The eye sees the color cyan
Color Subtraction – Cyan Visible
R G B
Inte
nsity
R G B
Inte
nsity
Color Subtraction – Using the Color Wheel• The absorption color
(Cyan, Magenta or Yellow) absorbs the opposite transmission color
• Black absorbs all transmission colors and darkens the resulting color
Color Subtraction – Red Visible
R G B
Inte
nsity
R G B
Inte
nsity
Magenta absorbs greenYellow absorbs blue
Color Subtraction – Maroon Visible
R G B
Inte
nsity
R G B
Inte
nsity
Magenta absorbs greenYellow absorbs blueBlack absorbs some red
Color Subtraction – Navy Blue Visible
R G B
Inte
nsity
R G B
Inte
nsity
Magenta absorbs greenCyan absorbs redBlack absorbs some blue
Color Subtraction – Light Green Visible
R G B
Inte
nsity
R G B
Inte
nsity
Low intensity cyan absorbs some redLow intensity yellow absorbs some blue
