|
"Lena" Image with Different Types of Distortions
| 
|
|
|
(a) Original "Lena" image, 512 by 512, 8bits/pixel
MSE = 0, Q = 1
|
(b) Impulsive Salt-Pepper Noise
MSE = 225, Q = 0.6494
|
| 
|
|
|
(c) Additive Gaussian Noise
MSE = 225, Q = 0.3891
|
(d) Multiplicative Speckle Noise
MSE = 225, Q = 0.4408
|
| 
|
|
|
(e) Mean Shift
MSE = 225, Q = 0.9894
|
(f) Contrast Stretching
MSE = 225, Q = 0.9372
|
| 
|
|
|
(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 index
Note: All distorted images have nearly identical MSE, but with
drastically different visual quality.
|
