This project will undertake a number of activities in three key sites in Cambodia, Tanzania and Australia.
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.
Following formative evaluation we will assess the criterion validity (urinary biomarkers) and the relative validity (24-hr recalls) of the VISIDA system for measuring individual dietary assessment. Usability acceptability of the system will also be measured.
The VISIDA system will be implemented in Tanzania in two smaller studies involving nutritionists and pregnant women. Findings from this study will be used to refine the VISIDA system implementation framework to facilitate the system's use in other countries.