Ma, H., Zhao, K., Jin, X., Ji, J., Qiu, Z., & Gao, S. (2019). Spectral difference analysis and identification of different maturity blueberry fruit based on hyperspectral imaging using spectral index. International Journal of Agricultural and Biological Engineering, 12(3), 134–140. https://doi.org/10.25165/ijabe.v12i3.4325