A Review of the Vision-based Approaches for Dietary Assessment
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Dietary-related problems such as obesity are a growing concern in todays modern world. If the current trend continues, it is most likely that the quality of life, in general, is significantly affected since obesity is associated with other chronic diseases such as hypertension, irregular blood sugar levels, and increased risk of heart attacks. The primary cause of these problems is poor lifestyle choices and unhealthy dietary habits, with emphasis on a select few food groups such as sugars, fats, and carbohydrates. In this regard, computer-based food recognition offers automatic visual-based methods to assess dietary intake and help people make healthier choices. Thus, the following paper presents a brief review of visual-based methods for food recognition, including their accuracy, performance, and the use of popular food databases to evaluate existing models. The work further aims to highlight future challenges in this area. New high-quality studies for developing standard benchmarks and using continual learning methods for food recognition are recommended.
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