According to CNBC the Ukrainian startup "Petiole" is ranked one of the brightest ideas around the globe of 2015.
Petiole is a mobile-based recommendation system for precision
agriculture. It's the tool to measure plant leaf area. It monitors dynamics of plant growth using leaf-area measurement, helping to understand how a plant reacts to different factors (weather, growth promoters, etc.). It is like a smart tracker for plant growth.
Time of measuring the plant leaf area is less than one second. It is 1000 times faster than using graph paper and 100 times faster than scanning and processing leaf image in Photoshop.
Petiole has a mobile app to make leaf-area measurement and data cloud service to collect, process data and show dynamics of growth in an affordable manner. After tweaking this service, the next steps for Petiole are to quantify leaf greenness and make diagnostics of leaf disease.