Elevator button recognition using auto-slant correction and projection histogram. - Qinghao An; Jianjie Shi; Jinping Li; Fudong Cai (CISP-BMEI, 2017)

Positioning and Pressing Elevator Button by Binocular Vision and Robot Manipulator. - Tiyu Fang; Huiwu Chen; Jianjie Shi; Jinping Li (SPAC, 2018)