Spontaneous Blink Features Extracted from Video for Multi-Class Classification of Parkinson's Disease. - Sahar Hafsi; Linda Marrakchi-Kacem; Sonia Djaziri-Larbi; Farouk Mhamdi; Gaël Mahé; Nicolas Loménie; Youssef Abida; Amal Atrous; Imen Kacem; Amina Gargouri Berrechid; Riadh Gouider (ETRA, 2026)