Table 3 Measured relative reflectance of the six reference materials of the Raspberry Pi calibration board, of Red (620–680 nm) and NIR (720–750 nm) light, derived from Additional file 1: Fig. S3
From: Development of an accurate low cost NDVI imaging system for assessing plant health
# (Colour) | Red reflectance (%) | NIR reflectance (%) |
|---|---|---|
1 (White) | 92.69 | 87.62 |
2 (Sand) | 63.59 | 60.85 |
3 (Brown) | 16.29 | 16.13 |
4 (Indian Burch) | 66.72 | 62.69 |
5 (Forest Green) | 4.90 | 5.88 |
6 (Burgundy) | 25.53 | 39.40 |