This project will undertake a number of activities in three key sites in Cambodia, Tanzania and Australia.
The target population group consists of mothers and their children aged ≤5 years.
The VISIDA system will undergo an iterative development and piloting processes for the image-voice food record app, wrist sensor and web-based analysis platform. In addition the machine learning models for wrist sensor and video cameras will be developed and evaluated during this phase.
Ground truth study: Mothers and children will undergo an observational feeding study where we test the VISIDA system for measuring true intake versus self-reported intakes.
Evaluation study: The criterion validity (urinary biomarkers), relative validity (24-hr recalls) and reliability (repeat VISIDA) of the VISIDA system will be established.
During the process of the development, piloting and evaluation of the VISIDA system in Cambodia and Australia we will design a knowledge translation framework to facilitate the implementation of the VISIDA system in other low and lower-middle income countries. This framework will then be evaluated during this phase in Tanzania.