"Lena" Image with Different Types of Distortions
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(a) Original "Lena" image, 512 by 512, 8bits/pixel MSE = 0, Q = 1 |
(b) Impulsive Salt-Pepper Noise MSE = 225, Q = 0.6494 |
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(c) Additive Gaussian Noise MSE = 225, Q = 0.3891 |
(d) Multiplicative Speckle Noise MSE = 225, Q = 0.4408 |
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(e) Mean Shift MSE = 225, Q = 0.9894 |
(f) Contrast Stretching MSE = 225, Q = 0.9372 |
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(g) Blurring MSE = 225, Q = 0.3461 |
(h) JPEG Compression MSE = 215, Q = 0.2876 |
MSE: mean squared error; Q: the proposed
universal image quality indexNote: All distorted images have nearly identical MSE, but with drastically different visual quality.
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LIVELast updated Feb. 27, 2001
