We help agronomists, agriculture scientists, crop-protection and seed companies to get more valuable plants, yields and insights using leaf area and chlorophyll measurements directly in the field.
Petiole measures plant leaf area and chlorophyll content using a camera of a mobile phone in real time. How does it do this you can watch here.
Also, you can download Petiole for your phone with OS Android and experienced his work by yourself.
Good luck with your measurements.