RECI

  The chlorophyll index (CI) is applied to calculate the total amount of chlorophyll in plants. In general, this index contains two separate bands: CIgreen and CIred-edge. These bands are responsive to slight variations in the chlorophyll content and are consistent for most types of plants. In other words, the CI is a relatively accurate indicator of plant health and can be effectively used in nutrient management throughout the season. 

CIred-edge takes advantage of a narrow spectral band between the red and the near-infrared (NIR) bands of the plant reflectance range. The red-edge chlorophyll index is calculated using the following equation:

• RECI = (NIR /RED) – 1

The values range is -1 to +1 and we use the same colour map as the NDVI colour map shown to the right of the image.