Fig. 3From: A method of two-dimensional correlation spectroscopy combined with residual neural network for comparison and differentiation of medicinal plants raw materials superior to traditional machine learning: a case study on Eucommia ulmoides leavesOriginal spectrum of different drying methods A and regions B for E. ulmoides leaves based on FT-NIR. C, D, E, F: different regions of 40℃, 60℃, sun drying, and shade drying, respectivelyBack to article page