Prabhakaran R, C Thamilarasi, and Jimin C Jiji. “Implementation of Service Robot Using OCR Technique in Raspberry PI for Visually Impaired Person”. International journal of intellectual advancements and research in engineering computations 7, no. 1 (March 29, 2019): 1433–1437. Accessed April 29, 2024. https://ijiarec.com/ijiarec/article/view/1157.