Fig. 4
From: Detecting spikes of wheat plants using neural networks with Laws texture energy
Example results from measuring spike growth under different nitrogen treatments: the measurement was carried on the first spike of plant for 2 genotypes (Gladius and Kukri) under 5 nitrogen treatments (n1, n2, n3, n4, n5). The end point is the last imaging day (49th day after planting), while the start point is the 4th day after the spike became visible in the plant image. Logarithmic model was applied for all the data set to get the curves