Research Area:  Machine Learning

Abstract:

With commercialization of deep learning (DL) models, daily precision dietary record based on images from smartphones becomes possible. This study took advantage of DL techniques on visual recognition tasks and proposed a suite of big-data-driven DL models regressing from food images to their nutrient estimation. We established and publicized the first food image database from the Chinese market, named ChinaMartFood-109. It contained 10,921 images with 23 nutrient contents, covering 18 main food groups. Inception V3 was optimized using other state-of-the-art deep convolutional neural networks, achieving up to 78 % and 94 % for top-1 and top-5 accuracy, respectively. Besides, this research compared three nutrient estimation algorithms and achieved the best regression coefficient () by normalization + AM compared with arithmetic mean and harmonic mean, validating applicability in practice as well as theory. These encouraging results provide further evidence supporting artificial intelligence in the field of food analysis.

Keywords:  
Deep learning
Nutrients estimation
DL techniques
Regression coefficient
Food analysis

Author(s) Name:  Peihua Ma, Chun Pong Lau, Ning Yu

Publisher name:  Elsevier

DOI:  10.1016/j.foodchem.2021.130994

Volume Information:  Volume 373

Paper Link:   https://www.sciencedirect.com/science/article/abs/pii/S0308814621020008