2017

The Perception-Distortion Tradeoff

Blau, Yochai, Michaeli, Tomer

Understand

Image restoration algorithms are typically evaluated by some distortion measure (e.g.

  • PSNR, SSIM, IFC, VIF) or by human opinion scores that quantify perceived perceptual quality.
  • In this paper, we prove mathematically that distortion and perceptual quality are at odds with each other.
  • Specifically, we study the optimal probability for correctly discriminating the outputs of an image restoration algorithm from real images.

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