From: Efficient robust image interpolation and surface properties using polynomial texture mapping
 | Chrom terms | Lum terms | ||||
---|---|---|---|---|---|---|
 |  | 1 | 4 | 6 | 9 | 16 |
PTM basis | 1 | 19.66 | 24.19 | 26.15 | 28.40 | 31.15 |
 | 4 | 19.84 | 24.50 | 26.53 | 28.74 | 31.55 |
 | 6 | 19.82 | 24.48 | 26.55 | 28.79 | 31.73 |
 | 9 | 19.77 | 24.45 | 26.50 | 28.99 | 32.27 |
 | 16 | 19.75 | 24.37 | 26.45 | 28.96 | 32.59 |
HSH basis | 1 | 19.66 | 24.02 | 25.03 | 26.27 | 27.16 |
 | 4 | 19.81 | 24.20 | 25.19 | 26.39 | 27.28 |
 | 6 | 19.79 | 24.19 | 25.24 | 26.45 | 27.38 |
 | 9 | 19.76 | 24.17 | 25.22 | 26.54 | 27.50 |
 | 16 | 19.75 | 24.14 | 25.21 | 26.54 | 27.57 |