Adaptive Thresholding
A binarization method that chooses a different cutoff for every pixel based on its local neighborhood. It handles uneven lighting that defeats a single global threshold, making it a go-to for scanned documents and handwriting.
Spot it
- 01Crisp black on white
- 02Even background despite shadows
- 03Speckle in flat areas
Why it happens
Compares each pixel to the mean or Gaussian-weighted average of its surrounding window minus a small constant, turning it black or white accordingly.
Recreate it in Pixio
Image edit prompt“Apply adaptive thresholding to this image: pure black and white only, no gray. Local contrast decides each pixel, so shadows and gradients do not wash out detail; text, edges and textures come out as crisp black marks on a white background with slight speckle in flat areas. Keep the original subject and composition recognizable.”
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