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Raquel Bujans

DKL Color Model. Raquel Bujans. Research advisor Dr. Cindy Grimm. Color Theory. How your eye sees light: Light reflects off object Enters eye, retina Processed by brain Physical process: Rods Cones Double-opponent cells. Color Theory. Color Theory. Daylight See color

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Raquel Bujans

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  1. DKL Color Model Raquel Bujans Research advisor Dr. Cindy Grimm

  2. Color Theory • How your eye sees light: • Light reflects off object • Enters eye, retina • Processed by brain • Physical process: • Rods • Cones • Double-opponent cells Washington University in St. Louis Media & Machines Lab

  3. Color Theory Washington University in St. Louis Media & Machines Lab

  4. Color Theory Washington University in St. Louis Media & Machines Lab

  5. Daylight See color 3 types: red, green, blue (not exact) Middle of retina Cones Washington University in St. Louis Media & Machines Lab

  6. Low light conditions Black + white Peripheral vision More rods than cones Rods Washington University in St. Louis Media & Machines Lab

  7. Circular Types Red – green Blue – yellow Make both colors seem brighter when next to each other (hard time seeing boundary) Double-Opponent Washington University in St. Louis Media & Machines Lab

  8. Double-Opponent Blue-Yellow: Washington University in St. Louis Media & Machines Lab

  9. Double-Opponent Red- Green: Washington University in St. Louis Media & Machines Lab

  10. No rods / cones / double-opponent cells in one spot. That where your optic nerve is! Blind spot! Washington University in St. Louis Media & Machines Lab

  11. http://www.psych.ucsb.edu/~rowe/SimultaneousContrast.html http://www.psych.ucsb.edu/~rowe/SuccessiveColorContrast.html Fun Tricks Washington University in St. Louis Media & Machines Lab

  12. RGB: red, green, blue Additive (all 3 together = white light) Based on additive primary colors Can’t represent all visible colors TV, monitors Existing Color Models (RGB) Washington University in St. Louis Media & Machines Lab

  13. HSV: hue, value, saturation Hue means “color” Value means “brightness” Saturation means “vibrancy” or “purity” More perceptually intuitive Existing Color Models (HSV) Washington University in St. Louis Media & Machines Lab

  14. Existing Color Models (HSV) Washington University in St. Louis Media & Machines Lab

  15. LUV: luminance, chromacity Tries to represent more colors than RGB Can represent all visible colors Designed to be more accurate Existing Color Models (LUV) Washington University in St. Louis Media & Machines Lab

  16. Existing Color Models (LUV) Washington University in St. Louis Media & Machines Lab

  17. DKL: red-green, blue-yellow, intensity Reasons why: New methods for artistic control Based directly off eye’s physical process of “seeing” New Model - DKL Washington University in St. Louis Media & Machines Lab

  18. Paint more warm/cool Ex: paint sunrise  sunset Each color shifts differently Ex: red  blue VS. green  blue Easy to change: adjust blue-yellow channel Control intensity Intensity affects color http://www.psych.ucsb.edu/~rowe/Bezold-Brucke.html Why DKL is Better Washington University in St. Louis Media & Machines Lab

  19. In touch with the way we see light Models behavior of cones, rods, and double opponents Represents more colors Color interaction more correct Why DKL is Better Washington University in St. Louis Media & Machines Lab

  20. Recent work: tables of colors shifted under different color models Color Shift Tables Washington University in St. Louis Media & Machines Lab

  21. ? Questions? Washington University in St. Louis Media & Machines Lab

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