"Couple" Image with Different Types of Distortions


(a) Original "Couple" image, 512 by 512, 8bits/pixel

MSE = 0, Q = 1

(b) Impulsive Salt-Pepper Noise

MSE = 81, Q = 0.8806

(c) Additive Gaussian Noise

MSE = 81, Q = 0.7039

(d) Multiplicative Speckle Noise

MSE = 81, Q = 0.7183

(e) Mean Shift

MSE = 81, Q = 0.9947

(f) Contrast Stretching

MSE = 81, Q = 0.9621

(g) Blurring

MSE = 81, Q = 0.7500

(h) JPEG Compression

MSE = 82, Q = 0.6761

MSE: mean squared error; Q: the proposed universal image quality index

Note: All distorted images have nearly identical MSE, but with different visual quality.


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Last updated Feb. 28, 2001