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Detect noise levels in images

  • Gaussian Noise - Noise having PDF equal to the normal distribution. i.e. the pixel values that these noises can take are Gaussian distributed.

  • Impulse Noise - caused by sharp and sudden disturbances in the image signal. It usually occurs as white and black pixels in the image.

real-world noise (also known as blind noise)

img.png

Video Quality Metrics

  1. full-reference (FR) require full access to the reference video.
  • Signal-to-Noise Ratio (SNR)
  • Peak Signal-to-Noise Ratio (PSNR)
  • Mean Squared Error (MSE), Structural SIMilarity (SSIM)
  • Visual Information Fidelity (VIF)
  • VSNR
  • Video Quality Metric tools (VQM)
  1. reduced-reference (RR) techniques which need a set of coarse features extracted from the reference video.

References