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A Conservative OCR-Enabled Workflow for R214 Sodium Screening of South African Packaged Foods

arXiv · AI, language, vision and robotics · article · Sep 14, 2026 · UTC

Using food package images to monitor sodium and salt content against South Africa's R214 sodium limits is challenging when screening decisions require product identity, nutrition facts panel evidence, reporting basis, and category-specific thresholds. This study presents a conservative image-based workflow that combines region detection, optical character recognition (OCR), product identity and sodium evidence extraction, R214 category assignment, deterministic threshold comparison, and independent vision language model comparison. The evaluation used 442 packaged food products and 3 929 full

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