Original ResearchPublished 7 October 2026Footprint to prediction: low-cost, three-class foot arch screening using a Harris matHariprasad Ramachandran · Srivardan Balu · Kaushik Ramakrishna Haran · Sanjay Murugan Selvi · Sharmila NageswaranFrontiers in Artificial Intelligencedoi 10.3389/frai.2026.1849098