La Nature se dévoilant devant la Science

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The Munsell atlas is a pure eye measure construct whereas Ostwald’s atlas is a conceptual entity. These objects have entirely distinct ontologies. (Notice in the drawing: Dark/black and bright/white are confused, the branches have no natural length.) 84
Ostwald’s color atlas has nothing to do with “eye measure”: From the standard observer tables you can implement it on your computer. 85
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La Nature se dévoilant devant la S
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1 Color Space Jan Koenderink
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physics (optics) psychology of perc
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When a beam of radiation enters the
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Consider the space S of incoherent
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The whole procedure turns out to be
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Colorimetry is based upon an equiva
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In summary: Methodologically/concep
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From Newton derives the myth that o
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In a linear space infinitely many b
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700nm 530nm } equal mixture 578nm A
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The object colors
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All spectral reflectances fill an
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In classical colorimetry one has no
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Aside: I’m skipping numerous tech
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The “optimal colors” are the br
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Goethe against Newton In the “Pol
Page 35 and 36: Goethe’s “edge colors” are se
Page 37 and 38: spectrum & inverted spectrum 35 “
Page 39 and 40: Like the optimal colors, exactly on
Page 41 and 42: All of Newton’s experiments (also
Page 43 and 44: “Bad” spectral resolution can b
Page 45 and 46: Aside: “Color is seeing by wavele
Page 47 and 48: The Goethe “edge colors” are an
Page 49 and 50: “warm” edge color series “coo
Page 51 and 52: cool loop warm loop The edge color
Page 53 and 54: The edge color loci appear as you p
Page 55 and 56: Arthur Schopenhauer Arthur Schopenh
Page 57 and 58: “Best” colors occur when the cu
Page 59 and 60: The spectral region left over betwe
Page 61 and 62: 59 For the maximum volume RGB crate
Page 63 and 64: 1 0.75 0.5 0.25 0 1 0.75 0.5 0.25 0
Page 65 and 66: 63 The RGB crate mapped on a unit c
Page 67 and 68: Ostwald’s semichromes
Page 69 and 70: Ostwald asked a physicist: “What
Page 71 and 72: k c w complementaries In Ostwald’
Page 73 and 74: The “full colors” have maximum
Page 75 and 76: these full colors are the “best (
Page 77 and 78: W K W K The envelope of all color W
Page 79 and 80: “ultimate color” optimal colors
Page 81 and 82: U x K W U c Any color can be writte
Page 83 and 84: 100 75 50 25 0 G Y R M B C The full
Page 85: Eisblau Ublau-Eisblau Ublau-Veil Se
Page 89 and 90: Ostwald’s “Principle of Interna
Page 91: it can be shown that an “honest p
Page 94 and 95: The “Principle of Internal Symmet
Page 96 and 97: The “ Wyszecki Hypothesis” and
Page 98 and 99: There are two ways to force “Wysz
Page 100 and 101: An obvious (though apparently unrec
Page 102 and 103: 1.0 0.8 0.6 0.4 0.2 0.0 1.0 0.8 0.6
Page 104 and 105: A few remarks on “perceived color
Page 106 and 107: The squares need not be adjacent fo
Page 108: thank you for your attention j.j.ko
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