Table 3.
The model with the best fit for RGB images with manual detection includes the variables camera angle and canopy density.
| Estimate | 95% Confidence Intervals | p-Value | |
|---|---|---|---|
| (Intercept) | 0.891 | 0.615, 1.175 | 4.13 × 10−10 |
| Camera angle (90°) | −0.356 | −0.622, 0.0906 | 0.00868 |
| Canopy density (low) | −0.633 | −0.967, −0.303 | 0.000185 |
| Canopy density (med) | −1.382 | −1.726, −1.044 | 1.84 × 10−15 |
| Canopy density (high) | −3.906 | −4.582, −3.319 | <2 × 10−16 |
| Canopy density (open to low) | −0.268 | −0.689, 0.155 | 0.214 |
| Canopy density (low to med) | −1.140 | −1.567, −0.713 | 2.20 × 10−7 |
| Canopy density (med to high) | −2.467 | −3.044, −1.934 | <2 × 10−16 |
| Canopy density (high to med) | −1.739 | −2.193, −1.297 | 2.58 × 10−14 |
| Canopy density (med to low) | −0.785 | −1.212, −0.360 | 0.000299b |
| Canopy density (low to open) | −0.758 | −1.185, −0.333 | 0.000481 |