Text image detection method, network and device

Abstract

The invention relates to the technical field of image processing, provides a text image detection method, network and equipment, and aims to solve the problem that the existing text image detection method is difficult to accurately locate the position of each item. The text image detection method includes: preprocessing the text image through the basic sub-network to obtain the feature map of the text image; sliding and laying a priori frames of various sizes on the feature map through the recommendation sub-network, each The laying density of the a priori frame in the direction perpendicular to the item is greater than that parallel to the direction of the item, and from multiple a priori frames, select the a priori frame that can reflect the approximate area where the item is located, and use it as a recommendation frame to locate the sub-network , using the recommendation box and the feature map to locate the position of the item in the text image. The text image detection method can be applied to the text image detection with dense line spacing, and more items can be located from the text image with dense line spacing.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a text image detection method, network and equipment. Background technique [0002] The purpose of text image detection is to extract the specific content of each item from the fixed layout text. Wherein, the entry refers to a specific type of information, such as name, date of birth, gender, etc. on a text page (taking an ID card as an example). In a common application scenario, what the user obtains is a photographed image of text, and text image detection needs to extract the specific content of each item from such photographed image by using image processing technology. [0003] The existing detection scheme is: first obtain the position of the certificate or bill in the image through edge trimming correction, target detection and other methods, then intercept the certificate or bill, and normalize the image size, and finally use the template information to ...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a text image detection method, network and equipment, aiming to solve the problem that the existing text image detection method is difficult to accurately locate the position of each item

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