The Three Psychological Dimensions of Vision

The mind enables the eye to view objects in three dimensions. Bernstein et al. (2018) assert that the three vision’s psychological dimensions are hue, brightness, and saturation. Hue refers to the colors the eyes can perceive and categorizes based on their wavelengths. Consequently, the primary hues are red, blue, and green (Wilms & Oberfeld, 2018). Psychologically, eyes operate like the color wheel, whereby the eye describes an object as red, blue, green, or the secondary colors depending on the light’s wavelength that reaches the eye’s color space. Notably, the light receptors in the eye capture the wavelengths and transmit the message to the brain, where color sensation occurs.

The human eyes often receive different objects’ brightness. However, regardless of the brightness, the mind’s perception remains relatively the same (Bernstein et al., 2018). The difference in the perception of the image’s brightness is background’s color. For instance, we view a grey object differently when it is in white and dark backgrounds. According to Bernstein et al. (2018, p. 182), “the brightness of an object is perceived in relation to its background.” Therefore, based on the background, humans can perceive an object as bright, medium, or dark (Wilms & Oberfeld, 2018). Correspondingly, people perceive an image’s brightness in diverse ways depending on how their brains process the color type and intensity of the involved background.

Color saturation is the perception of the color’s intensity. Individuals can describe color saturation as high, low, or medium (Wilms & Oberfeld, 2018). It is critical to note that color saturation is responsible for how people describe a color’s degree, like true, light, or dark blue. As such, color intensity is directly proportional to saturation. Thus, as saturation increases, the color becomes brighter. Brightness affects saturation’s perception, which in turn influences how the brain interprets the light’s wavelength. Notably, people who hardly distinguish hue levels, such as perceiving an image as similar under different lighting conditions have a poor color saturation dimension.

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