Calibration of Abnormal Brightness Area on the LED Display Xin-Yue Mao, Rui-Guang Wang, Hong-Bin Cheng, Jing Miao, Yu Chen and Hui Cao ITM Web Conf., 11 (2017) 02001 Published online: 23 May 2017 DOI: 10.1051/itmconf/20171102001