Table 1 PSNR measures (in dB) with different smoothing function applied to the color table
From: Color reproduction and processing algorithm based on real-time mapping for endoscopic images
Span | 5 | 9 | 15 | 19 |
|---|---|---|---|---|
Smoothing function | ||||
 Moving average | 51.07 | 51.42 | 51.50 | 51.16 |
 Linear local regression | 51.27 | 51.18 | 51.14 | 52.06 |
 Quadratic local regression | 51.11 | 51.94 | 51.50 | 51.22 |
 Savitzky–Golay | 50.46 | 51.16 | 51.22 | 50.91 |
 Robust linear local regression | 51.26 | 49.29 | 49.43 | 49.53 |
 Robust quadratic local regression | 48.82 | 49.85 | 49.40 | 49.16 |