Numeral instrument recognition (NIR) based on machine vision is a breach for achieving interconnection of all instruments and realizing management-control integration and improving the intelligent management level.
目前，国内对数字识别的研究主要集中在手写数字识别、印刷体数字识别以及车牌识别三方面，而对数显仪表自动读数的研究近几年才出现。
