Table. 1 CR and PSNR values obtained for DB1 (codebook size = 256)
From: Lossy image compression based on prediction error and vector quantisation
Image | PSNR | ||||
|---|---|---|---|---|---|
10:1 | 20:1 | 40:1 | 60:1 | 80:1 | |
Chest (100) | 58.01 | 54.19 | 47.65 | 45.54 | 43.07 |
Leg (100) | 55.11 | 50.57 | 45.44 | 43.83 | 42.07 |
Radius and Ulna bones (100) | 54.67 | 49.75 | 44.39 | 42.42 | 40.34 |
Pelvic girdle (100) | 55.38 | 51.16 | 45.55 | 43.78 | 41.66 |
Skull front view (100) | 59.53 | 54.02 | 49.23 | 46.99 | 44.74 |
Skull right view (50) | 58.14 | 53.5 | 48.32 | 46.06 | 43.68 |
Skull left view (100) | 57.63 | 54.07 | 48.02 | 45.13 | 42.4 |
Mammogram left (100) | 61.35 | 56.37 | 51.45 | 48.36 | 45.34 |
Mammogram right (100) | 60.14 | 55.8 | 51.07 | 48.36 | 45.87 |
Hand X-ray images (50) | 56.25 | 51.7 | 46.2 | 44.12 | 41.74 |
Pelvic + back bone (50) | 55.23 | 51.06 | 45.51 | 43.05 | 40.36 |
Neck (50) | 53.99 | 49.68 | 45.08 | 42.58 | 40.13 |
Average = | 57.12 | 52.66 | 47.33 | 45.02 | 42.62 |