Ecology of colored vision. And types of Dalton color deficiencies…
Posted by: adonis49 on: November 19, 2013
Ecology of colored vision. And types of Dalton color deficiencies
James C. Maxwell wrote: “All vision is colored: It is through different colors that we distinguish the forms of objects…” (Including black and white, shades of blacks and shadows at the boundaries)
Alfred Russel Wallace wrote: “For the ancient schools of naturalists, color had a trivial character, eminently capricious and undignified in the determination of species…”
Paul Cezanne wrote: “Color is where the brain and the universe meet“
Mary Cassatt wrote: “If painting serves nothing, why many of us have this passion for light and color?”
Jack Parker Hailman wrote in 1977:
“Since mankind is one of the animal species, he is not entirely free of the factors that dictate the model and the signals of the other animals…”
Mankind utilizes the same principles that animals communicate with colors, since color is anterior to culture, and fundamental in the behavior of living spaces.
Identical objects are discriminated in their colors, as the same forms and heights between two visual fields lacking structure, are differentiated…
Kurt Nassau identified 15 physical causes of colors in the determination of the physico-chemical constitution of objects, which give the impression of living in a physical space.
Species have colors that warn of dangerous situations and their level of toxicity, like yellow, red, mauve…
The animal kingdom “says it with color“, coded messages like dissimulation, fading within the environment, ostentatious positions, and imitation…
“By inverting the principle of dissimulation in the animal species in the colors, we can deduce the principle of ostentatious exhibitions” Jack Hailman
For example, a light blue color in the abdomen is a simulacrum of colored shadow in the snow…
For example, you see a picture of people walking in a covered souk and wearing long tunics, stripped in black and white. Are you looking at gandouras with large black stripes? Or this is the reflection of the trellis of the roof projecting over white robes? Only the context can decide us which is the correct interpretation…
Rigorous geometric lines inevitably send an impression of an undulation of a plane surface by nature…
Dots that have a black center and surrounded with clear colors simulate the iris of an eye.
Objects reflected by a glass are mentally eliminated, though they look as real as the objects…
The color perception is stable. When part of the uniform and colored picture is unequally lighted in the sunlight and the other part is in the shadow, the two parts differ for the eyes in clarity and tonality.
Many painters, leaders, artists, scientists… had deficiency in color perception
John Dalton described his condition in the book “Extraordinary facts relating to the vision of colours, with observation“
“(For me) the colors rose and blue are pretty close, where as Red and rose have no connection. The colors white, yellow or green have appropriate names. Blue, purple, rose and carmine are less distinguishable, being fundamentally assimilated to blue.
The color rose of geranium zonal looked sky blue during the day and red at candlelight at night…
Normal vision people distinguish 6 colors in the solar specter (red, orange, yellow, green, blue and purple). I could barely differentiate only 2 colors, three at best…”
Patrick Schulmann said:
“I have an orange colored cat. When my cat is lying in the green grass I can’t see it. Now multiply by 10 the size of the cat and the grass and I wouldn’t be able to see a tiger. Probably, I will be quickly eliminated by natural selection…”
Note 1: Post extracted from the amazing book “Natural history of colored vision” by Philippe Lanthony. The book is divided into 5 chapters:
1. Ecology of colored vision
2. Nature and painting
3. Related to Dalton
4. Daltonism and cultures
5. The Daltonian painters (and false Daltonians)
Note 2: Abraham Lincoln had a slight Trichromatism anomaly: The proportions of the 3 primary colors are significantly different from what normal people see. His wife claimed that she noticed this anomaly early on as Abraham barely differentiated a rose colored object.
The two subcategories are:
1. Protanomalie: an anomaly of the receptors for the long wave lengths (Red)
2. Deuteranomalie: An anomaly of the receptors for the medium frequencies (Green)
Achromatopsie is a hereditary anomaly of total absence of visual color: Monochromatism
Adonis Diaries 
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