Feature Article: A Design of Smart UVM for New Retail A Design of Smart Unmanned Vending Machine for New Retail Based on Binocular Camera and Machine Vision Lizheng Liu Fudan University Royal Institute of Technology Jianjun Cui Fudan University Yuxiang Huan Fudan University Zhuo Zou Fudan University Xiaoming Hu Royal Institute of Technology Lirong Zheng Fudan University Abstract-The smart unmanned vending machine using machine vision technology suffers from the sharp decrease of detection accuracy due to the incomplete image collection of items by monocular camera in complex environment, and the lack of obvious features in dense stacking of items. In this article, a binocular camera system is designed to effectively solve the problems of distortion and coverage caused by monocular camera. Besides, an image-stitching algorithm is developed to splice the images captured by the camera, which reliefs the burden of computation for back-end Digital Object Identifier 10.1109/MCE.2021.3060722 Date ofpublication 19 February 2021; date ofcurrent version 7June 2022. July/August 2022 Published by the IEEE Consumer Technology Society 2162-2248 ß 2021 IEEE 21