introduction to color science and engineering
TRANSCRIPT
Introduction to Color Science and Engineering
MUSIHOVEN, 12th March 2011
Stupid color questions
• Why the sky often looks blue?• Why the leaves are green?• How to say if there is a difference in color
of those red roses?• How to make a certain color?• …• …• What is color anyway?
What colors are these?
What colors are these?
Then, what colors are these?
Once upon a time, …
Once upon a time, …
Once upon a time, …
Color wheels
Traditional colors for painting
Additive and Subtractive Colors
Subtractive colors
(source: http://www.xrite.com/documents/literature/en/L11-029_color_guide_en.pdf )
Color attributes
(source: http://www.xrite.com/documents/literature/en/L10-001_Understand_Color_en.pdf )
Color attributes
(source: http://www.xrite.com/documents/literature/en/L10-001_Understand_Color_en.pdf )
So, what is color?
3 necessary components for the existence of colors
(source: http://www.xrite.com/documents/literature/en/L11-029_color_guide_en.pdf )
Electromagnetic waves
Light sources
…, etc
Their spectrums
3 necessary components
(source: http://www.xrite.com/documents/literature/en/L11-029_color_guide_en.pdf )
Object
(source: http://www.xrite.com/documents/literature/en/L11-029_color_guide_en.pdf )
Objects’ response to light
(source: http://www.hunterlab.com/appnotes/an05_00.pdf )
Spectral data curves of samples
Spectral Data for samples with D65 10o
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%R
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Fingerprint of Cyan
Magenta’s fingerprint
Spectral Data for samples with D65 10o
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Yellow’s fingerprint
Spectral Data for samples with D65 10o
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3 necessary components
(source: http://www.xrite.com/documents/literature/en/L11-029_color_guide_en.pdf )
Photoreceptor cells
(source: www.wikipedia.com)
Eye
(source: http://www.hunterlab.com/appnotes/an10_07.pdf )
Standard Human Observer
(source: http://www.xrite.com/documents/literature/en/L10-001_Understand_Color_en.pdf )
3 necessary components
(source: http://www.xrite.com/documents/literature/en/L11-029_color_guide_en.pdf )
Colors in numbers
Example
(source: http://www.xrite.com/documents/literature/en/L10-001_Understand_Color_en.pdf )
Example
(source: http://www.xrite.com/documents/literature/en/L10-001_Understand_Color_en.pdf )
So…
(source: http://www.xrite.com/documents/literature/en/L10-001_Understand_Color_en.pdf )
Colors in practices
(source: http://www.xrite.com/documents/literature/en/L10-001_Understand_Color_en.pdf )
(source: http://www.xrite.com/documents/literature/en/L10-001_Understand_Color_en.pdf )
dE
(source: http://www.xrite.com/documents/literature/en/L11-029_color_guide_en.pdf )
Quiz
Spectral Data for samples with D65 10o
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400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700
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%R
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Quiz
Spectral Data for samples with D65 10o
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400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700
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%R
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Quiz
Spectral Data for samples with D65 10o
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400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700
Wavelength (nm)
%R
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Quiz
Spectral Data for samples with D65 10o
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400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700
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Real quiz
Spectral Data for samples with D65 10o
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400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700
Wavelength (nm)
%R
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The End