Sharing some resources that may help with the challenge:
Food Recognition
https://arxiv.org/pdf/2004.13188v1.pdf 2020 portion + food detection
https://arxiv.org/pdf/2010.01412v2.pdf 2021 state of the art on food101
https://arxiv.org/pdf/2012.03368v1.pdf end2020 viper dataset
https://onlinelibrary.wiley.com/doi/full/10.1111/1541-4337.12492 2019 Broad survey of the field
Datasets:
https://www.tensorflow.org/datasets/catalog/food101 food 101
https://kuanghuei.github.io/Food-101N/ food 101N
https://paperswithcode.com/paper/foodx-251-a-dataset-for-fine-grained-food foodX 251
http://www.ivl.disco.unimib.it/activities/food524db/ food 524 Ciocca et al
http://www.ivl.disco.unimib.it/activities/food475db/ food 475 Ciocca et al
miscellanoues food datasets: https://hackernoon.com/machine-learning-food-datasets-collection-db21e38ea225
http://pic2recipe.csail.mit.edu/ Recipe 1M+ recipes + pics
http://vireo.cs.cityu.edu.hk/VireoFood172/ vireo172
https://iplab.dmi.unict.it/UNICT-FD889/
https://arxiv.org/pdf/2012.03368v1.pdf vfn viper
http://123.57.42.89/FoodComputing-Dataset/ISIA-Food500.html isia food 500