Visual Information Processing
Polarized Light
Natural Polarization
Why is Sky Blue?
Polarization Filter
Polarization by Reflection
Polaroid filter
Polarized Sun Glasses
3D Movie
Compound eye of Insect
Polarization of Vision of Insect
Honey Bee Dance
Polarization by Refraction
Rainbow is highly Polarized
Leon Battista Alberti 1435-36




Craftsman’s Handbook Cennino Cennini 1390
Newton's theory of Color 1672
Color Confusion




       Subtractive Color   Additive Color
Young Helmhoz Color theory of Trichromatic Color vision 1802
Goethe’s Color theory 1810




   “That I am the only person in this
   century who has the right insight
   into the diff...
Ewald Hering’s Opponent Color Theory (1834-1918)
Color Vision
Reflectance of Light
Reflectance of natural pigment
Surface reflectance
Surface reflected from blue vase in sunlight and skylight
Opponent Color Theory
The reflectance function of a natural surface
L+M




L-M




L+M-S
Cones
Anatomical Distribution of Rods and Cones
Three types of Cones
First evidence of Opponent theory




    Horizontal cells of Teleost fish
    recording by Gunnar Svactichin
    and Edwa...
Geniculate Ganglion Color Channel




Russell De Valois 1958
Hering’s Red Green Channel
Hering’s Red Green Channel
Hering’s Blue Yellow Channel
Horizontal Cells
Amicrine Cells
Receptive field of Ganglion Cells
Receptive field of Primate Ganglion Cells for Color
The Lateral Geniculate Nucleus
Color Vision in Visual Cortex
Color Vision beyond Striate Cortex
AIT = anterior inferior temporal area; CIT = central inferior temporal area; LIP = lateral
intraparietal area; Magno = mag...
Color blindness




         Normal        Protanope




         Deuteranope   Tritanope
Ishihara Chart for Color blindness testing




                              21, 2
04c visual signal processing color vision
04c visual signal processing color vision
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04c visual signal processing color vision

  1. 1. Visual Information Processing
  2. 2. Polarized Light
  3. 3. Natural Polarization
  4. 4. Why is Sky Blue?
  5. 5. Polarization Filter
  6. 6. Polarization by Reflection
  7. 7. Polaroid filter
  8. 8. Polarized Sun Glasses
  9. 9. 3D Movie
  10. 10. Compound eye of Insect
  11. 11. Polarization of Vision of Insect
  12. 12. Honey Bee Dance
  13. 13. Polarization by Refraction
  14. 14. Rainbow is highly Polarized
  15. 15. Leon Battista Alberti 1435-36 Craftsman’s Handbook Cennino Cennini 1390
  16. 16. Newton's theory of Color 1672
  17. 17. Color Confusion Subtractive Color Additive Color
  18. 18. Young Helmhoz Color theory of Trichromatic Color vision 1802
  19. 19. Goethe’s Color theory 1810 “That I am the only person in this century who has the right insight into the difficult science of colors, that is what I am rather proud of, and that is what gives me the feeling that I have outstripped many.” Goethe studies after-images, colored shadows and Zür Farbenlehre (Theory of Colors) complementary colors
  20. 20. Ewald Hering’s Opponent Color Theory (1834-1918)
  21. 21. Color Vision
  22. 22. Reflectance of Light
  23. 23. Reflectance of natural pigment
  24. 24. Surface reflectance
  25. 25. Surface reflected from blue vase in sunlight and skylight
  26. 26. Opponent Color Theory
  27. 27. The reflectance function of a natural surface
  28. 28. L+M L-M L+M-S
  29. 29. Cones
  30. 30. Anatomical Distribution of Rods and Cones
  31. 31. Three types of Cones
  32. 32. First evidence of Opponent theory Horizontal cells of Teleost fish recording by Gunnar Svactichin and Edward MacNichol 1956
  33. 33. Geniculate Ganglion Color Channel Russell De Valois 1958
  34. 34. Hering’s Red Green Channel
  35. 35. Hering’s Red Green Channel
  36. 36. Hering’s Blue Yellow Channel
  37. 37. Horizontal Cells
  38. 38. Amicrine Cells
  39. 39. Receptive field of Ganglion Cells
  40. 40. Receptive field of Primate Ganglion Cells for Color
  41. 41. The Lateral Geniculate Nucleus
  42. 42. Color Vision in Visual Cortex
  43. 43. Color Vision beyond Striate Cortex
  44. 44. AIT = anterior inferior temporal area; CIT = central inferior temporal area; LIP = lateral intraparietal area; Magno = magnocellular layers of the lateral geniculate nucleus; MST = medial superior temporal area; MT = middle temporal area; Parvo = parvocellular layers of the lateral geniculate nucleus; PIT = posterior inferior temporal area; VIP = ventral intraparietal area.) (Based on Merigan and Maunsell 1993.)
  45. 45. Color blindness Normal Protanope Deuteranope Tritanope
  46. 46. Ishihara Chart for Color blindness testing 21, 2

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