Spectral technology and multispectral imaging for estimating the photosynthetic pigments and SPAD of the Chinese cabbage based on machine learning. - Jun Zhang 084; Dongfang Zhang; Zhenjiang Cai; Linbai Wang; Jing Wang; Lei Sun 004; Xiaofei Fan; Shuxing Shen; Jianjun Zhao (Comput. Electron. Agric., 2022)