- #1
rhia
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Can anyone give me a deeper understanding of the above terms in context of colors?
Deeper understanding of the above terms in context of colors?
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Discussion Overview
The discussion revolves around understanding specific terms related to colors, including saturation, hue, contrast, and brightness. Participants explore both theoretical and practical aspects of color representation, particularly in relation to the RGB scale and the CIE chromaticity diagram.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- Some participants propose that the RGB scale is a basic characterization of colors, while others argue that saturation, hue, contrast, and brightness are more abstract and subjective concepts.
- One participant asserts that there are standards for some of these terms, indicating that they are not purely subjective, although they do not provide specific references.
- A suggestion is made to refer to the CIE chromaticity diagram for a more concrete understanding of hue, brightness, and saturation, noting that the diagram illustrates how mixing colors results in perceived colors along connecting lines.
- It is mentioned that the chromaticity diagram primarily describes hue and that a complete color description requires luminance as a third parameter.
- General discussions about hue, saturation, and brightness are referenced, along with a suggestion to explore additional resources related to vision and color vision.
Areas of Agreement / Disagreement
Participants express differing views on the subjectivity of color terms, with some asserting that there are established standards while others maintain that these concepts are inherently subjective. The discussion remains unresolved regarding the nature of these terms.
Contextual Notes
There are limitations in the discussion regarding the definitions of terms and the absence of specific references to standards or literature that could clarify the claims made by participants.
- #2
ramollari
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Well, the most basic (and sufficient) characterization of colors is the RGB (red-green-blue) scale. Saturation, hue, contrast and brightness are abstractions and are subjective.rhia said:
- #3
Galileo
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They are not subjective. There is a standard for (at least some) of these terms.
However, I don't have the book where it's written with me... (doh
)
However, I don't have the book where it's written with me... (doh
)- #4
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rhia said:
You might try This Link for more information on the CIE chormaticity diagram which will answer many of your questions - though hue, brightness, and saturation are more general terms, which the CIE system attempts to make very concrete through a system of color coordinates.
Fully saturated colors are the colors of the rainbow, on the outer edge of the chromaticity diagram. (The colors on the bottom edge of the diagram are also fully saturated, though they are not spectral colors).
The main feature of the chromaticity diagram is that mixing any two colors together will result in a perceived color that lies along the line that joins the two colors together.
The 2-d chromaticity diagram describes only the hue of the color. A full description of a color requires a third parameter, the luminance.
There is some more general discussion of hue, saturation, and brightness
here
And This is the "vision" root of the entire webpage based "tree". As you will see if you visit it, there are many aspects to vision and color vision.
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