posterized

adjective
  1. reduced to a small number of distinct colors or tones, creating a flat, graphic appearance similar to a poster
  2. Usage: commonly used in photography, digital art, and image editing
verb
  1. to apply a posterization effect to an image, reducing its color palette to create a bold, graphic look
  2. Usage: past tense and past participle of posterize; used in photography and digital design

Examples