(original, contrast)
| 10 | import numpy as np |
| 11 | |
| 12 | def psnr(original, contrast): |
| 13 | mse = np.mean((original - contrast) ** 2) |
| 14 | if mse == 0: |
| 15 | return 100 |
| 16 | PIXEL_MAX = 255.0 |
| 17 | PSNR = 20 * math.log10(PIXEL_MAX / math.sqrt(mse)) |
| 18 | return PSNR |
| 19 | |
| 20 | |
| 21 | def main(): |