Design And Implementation Of Invoice Verification Mini Programs Based On OCR Technology

With the establishment of more and more companies,it is indispensable for financial personnel to sort out invoice information,manual sorting is time-consuming and labor-intensive,and the accuracy rate is not high.In addition,invoices also need to be managed.Paper-based invoices are difficult to manage for a long time,causing a certain impact.At this time,the invoice verification system based on OCR technology can greatly reduce the burden on the company,and can speed up the work efficiency of financial personnel.In response to this problem,the invoice verification system is mainly implemented from a scan code recognition module,a photograph recognition mode,a payment module,and a model module.First,through the research on the current status of optical character recognition technology and invoice recognition at home and abroad,the front and back office and database design of the scan code recognition module,photo recognition module and payment module are realized.Secondly,this topic uses the CTPN network to locate the characters in the invoice and the related verification code fields,start graying out the pictures and other related preprocessing,and then build a connection text to propose a network to locate the invoice fields and verification code Training and testing.Then use the CRNN network to realize invoice recognition and verification code recognition,to build the model and complete the training and testing of related functions.In the process,it is also necessary to preprocess the pictures to make the model training effect better.Finally,the two models are combined to complete the complete invoice identification and verification code identification,and the related models are deployed in the background to implement the invoice verification system to call the model,and the related functions of the invoice verification system are realized.The invoice verification system based on OCR technology can completely extract all the relevant information of an invoice and record it into the ticket folder.The method of taking pictures to identify the invoice due to the situation of the picture,the recognition accuracy rate is only 86%.The way to get the invoice field and then make a request to the official website,the accuracy rate of the complete information of the invoice is 96%.In this way,it can support the use of the invoice verification system in terms of function and performance.