Question

What is colour vision and what are the dimensions of colour?

Answer 1

Answer:

Color vision is an ability of animals to perceive differences between light composed of different wavelengths independently of light intensity.

The perception of color is often described by referring to three dimensions of the color experiences: hue, saturation, and brightness. Hue refers to the color quality of the light and corresponds to the color names that we use, such as orange, purple, green, indigo, yellow, cyan, aquamarine, etc.

Answer 2

Colour vision and dimensions of colour

Explanation:

Colour vision

• Colour vision is the visual capacity or ability of an organism to differentiate different wavelengths (spectra) of light without light intensity.
• This provides the eyes to discriminate various spectral colours.
• The cones present in the retina are responsible for colour vision.
• The photosensitive pigments present in the cones respond and absorbs specific wavelengths of light.
• A defect in color vision leads to colour blindness.  

The three basic dimensions of colour are hue, saturation and brightness.

• Hue is the actual colour quality of the light and represents the actual blue, orange, red, purple, or other colours without lightening or darkening with white or black.
• Hue depends on the wavelength of light
• Saturation: This indicates the purity of the light.
• An increase in saturation strengthens the color experience.
• Saturation depends upon the complexity of light.
• Brightness refers to the total amount of light. When brightness is more, the colour is more visible.
• Brightness depends upon the amplitude of light.