Bill image field positioning method and system based on location template and semantic template

Abstract

The invention provides a bill image field positioning method and system based on a location template and a semantic template. The method comprises the following steps: analyzing four types of locationattributes of the fields in the bill image; respectively formulating different template configuration xml files for different bill types; analyzing the bill type of the bill image through a bill sorting system, and loading the template configuration xml file with the same bill type as the bill image; positioning all field location coordinates in the bill image; performing positioning computationthrough the template configuration xml file and according to four types of location attributes, thereby acquiring the location coordinate of the field needing to recognize in the bill image, and acquiring the field local image, wherein the character recognition system recognizes the field local image as the character string by using the OCR technology. Through the method and system provided by theinvention, the specific location coordinate of the field in the bill image can be effectively acquired, a large number of data about the invoice type characteristic rule is effectively saved, and more data support is provided for the invoice character positioning and character recognition.

Description

technical field [0001] The invention belongs to the fields of image recognition and video analysis, and in particular relates to a bill image field positioning method and system based on a position template and a semantic template. Background technique [0002] Various commercial activities in modern society widely use various bills. Although electronic payments and electronic bills are increasing, traditional paper bills are still widely used, such as various paper invoices and financial bills. At present, the financial department has a large number of invoice images every day on average, and employees in multiple positions need to repeatedly audit the same invoice, which not only consumes manpower, but also reduces the efficiency of reimbursement. Realize the extraction of bill information through image OCR technology, compare the extracted face information with the reimbursement information, and realize automatic audit; the bill information extracted by OCR is stored in t...

AI Technical Summary

Problems solved by technology

[0004] Patent CN201310082322 "Invoice Information Area Automatic Identification and Extraction Method and Equipment" focuses on using cascaded classifiers to classify invoices. In the field positioning module, only fixed positions are used to extract specific fields, and the scope of applicable documents is too small

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