Method partially based on the excellent work described in:
 Kocabey, Enes, et al. "Face-to-BMI: Using computer vision to infer body mass index on social media." Eleventh international AAAI conference on web and social media. 2017.  Chaoran Liu, Face2BMI, (2020), GitHub Repository, https://github.com/6chaoran/face2bmi  Jiang, Min, and Guodong Guo. "Body weight analysis from human body images." IEEE Transactions on Information Forensics and Security 14.10 (2019): 2676-2688.
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