n. in visual perception, refers to the minimum amount of light intensity required for a designated wavelength in order that an object may be detected against its background or surrounding field. See brightness. Also brightness contrast.

BRIGHTNESS THRESHOLD: "The brightness threshold varies, mostly in relation to wavelength and color."
Cite this page: N., Pam M.S., "BRIGHTNESS THRESHOLD," in, April 7, 2013, (accessed September 23, 2021).