Uniform-Invoice Number Extraction

Abstract

Invoices are widely used in our daily life. Taiwan government uniform-invoice not only proves as the receipt of purchasing, but also is utilized as a lottery for bonus. However, checking the award-winning numbers is generally engaged manually and is a laborious job yet time consuming. This work presents an automatic invoice number extraction system with high accuracy. The proposed extraction system consists of two parts: invoice number detection and candidate invoice number segmentation. The developed system has been evaluated on 191 invoice images and achieved superior correct extraction performance up to 98.42%, while the false positive rate is as low as 0.094 per sample.