Non-destructive evaluation of chlorophyll content in tea leaves using hyperspectral reflectance from a compact spectrometer

Chlorophyll content has been used as an indicator for assessing photosynthetic ability, health and defense against a variety of degenerative diseases. Hyperspectral remote sensing offers some non-destructive methods played important role in evaluating vegetation characteristics. However, the prices traditional field portable spectroradiometers, such Ocean Optics Vis-NIR spectroradiometers Analytical Spectral Devices FieldSpec series, have not yet decreased to consumer levels, which prevents much practical use. Recently, fingertip-sized spectrometers developed then they could be powerful tools In present study, compact spectrometer (C12880MA-10, Hamamatsu Photonics) was evaluate chlorophyll tea leaves. Incorporating pre-processing techniques effective obtaining estimated values with high accuracy de-trending best technique this achieving RPD 2.03 RMSE 3.07 μg cm－2. The proposed method is cost effective, consumers apply will enable crop management.