salt-and-pepper noise

noun

A form of noise encountered in digital images, caused by defective light sensors at specific pixels, causing those pixels to appear fully black or fully white.

Meanings

nounsalt-and-pepper noise (countable and uncountable, plural salt-and-pepper noises)

plural salt-and-pepper noises

  1. countableuncountableA form of noise encountered in digital images, caused by defective light sensors at specific pixels, causing those pixels to appear fully black or fully white.

Origin

From the appearance of the random white and black noisy pixels, as though salt and pepper grains had been spread across the image.

Full word history & related roots →
Cite this entry
APA

salt-and-pepper noise. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/salt-and-pepper%20noise

MLA

“salt-and-pepper noise.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/salt-and-pepper%20noise. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “salt-and-pepper noise,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/salt-and-pepper%20noise.

Source: salt-and-pepper noise on Wiktionary, CC BY-SA 4.0.