Color Science https://web.archive.org/web/20071013085323/http://midnightkite.com/c...
The Wayback Machine - https://web.archive.org/web/20071013085323/http://midnightkite.com:80/color.html
COLOR SCIENCE
SPECTRA
The spectra below were generated using different RGB values for wavelengths between 380nm and
780nm. This was done by using a FORTRAN program (linked below) that uses linear approximations
for the RGB color coefficients.
Continuous Spectrum
Absorption Spectrum of Hydrogen
Emission Spectrum of Hydrogen
BLACKBODY RADIATION
The diagram below was created using a FORTRAN program (linked below) that computes the red,
green and blue color coefficients for hot objects. The program uses the CIE color matching functions
and Planck's distribution function for the spectral radiance of a blackbody.
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CHROMATICITY DIAGRAM
The CIE XYZ chromaticity diagram below was created using a FORTRAN program or Basic code
(linked below) that computes the red, green and blue color coefficients for each coordinate (x,y). For
another approach, see the UNIX cietoppm utility which is a NETPBM extension.
EYE SENSITIVITY
The three white curves to the right indicate the sensitivity level for the three types of cones. The black
curve indicates the sensitivity of the rods. The peak response moves from 550 nm to 500 nm at
night.[1].
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SPONSORED LINKS
CODE EXAMPLES
• Spectra FORTRAN Code
• Approximate RGB Values for Visible Wavelengths
• Chromaticity FORTRAN program or Basic code
• Blackbody FORTRAN program or C code
• Color Related GIF's
OTHER RELATED PAGES
• Rendering Spectra - by Andrew T. Young
• Color Science : Concepts and Methods, Quantitative Data and Formula
• Color Wheel Pro
• What color are the stars?
• What color is a blackbody?
• CIE - International Commission on Illumination
• Colorwize - Career and Personality Test
• Retinal Morphology and Color Vision
• Computer Color Displays for the World Wide Web
• Computer Graphics Systems Development Corp
• Analytical Spectral Devices spectroradiometers and spectrocolorimeters
• Photo Research Inc.
• Color Savvy Systems Incorporated
• Colour Space Animations - John Irwin
• CSIRO Colorimetry - Microsoft Windows Program
• Color Space Conversions
• Paul Bourke
• UltraMaster Color - Java
• Ian Kelly's Colour Links
• Munsell Color Science Laboratory
• Color in Visual Search
• Principles and Applications of Blackbody Radiation
• Temporal Coherence with Digital Color
• Newsgroup: sci.engr.color
• The Physics of Coloured Fireworks
• Mike D'Zmura's Stellar Spectra
• Imaging Technology Research Group
• Colour and Computer Graphics Lecture
• Color Specifier for Netscape
• Background Colors
• NetPBM Software - ppmtogif, giftoppm, etc.
• Chromaticity Diagram Utility: cietoppm
• Color Spectra Database
• A Symmetrical Model of Color Vision
• Color Matters - Psychological Effectsof Color
• Colour Imaging Group, London College of Printing
• Color Space FAQ
• Graphics File Format FAQ or Here
• Getting RGB values from binary images
Dan Bruton
astro@sfasu.edu
Roy G. Biv
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Color Science https://web.archive.org/web/20071013085323/http://midnightkite.com/c...
Astronomy Software Collection - Free SFA Star Charts - Astronomy Orb - Mars - Jupiter - Saturn - SL9 - Eclipsing Binary Stars - Astronomy
JavaScript - Movie Collection - Stepper Motors
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