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Single character area detection method and bill content identification method

A technology of character area and detection method, which is applied in the field of single character area detection and bill content recognition, can solve the problems of low recognition accuracy of bill content, and achieve high recognition accuracy, improved accuracy, and strong pertinence

Active Publication Date: 2019-11-22
西安网算数据科技有限公司
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Problems solved by technology

[0003] The invention proposes a single character area detection method and a bill content recognition method, which solves the problem of low recognition accuracy of bill content in the prior art

Method used

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  • Single character area detection method and bill content identification method
  • Single character area detection method and bill content identification method
  • Single character area detection method and bill content identification method

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Embodiment Construction

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0049] Such as Figure 1-Figure 3 shown, including

[0050] S10: Obtain a picture of a field area to be recognized, and mark a single character area in the picture of a field area to be recognized, to obtain a picture of a single character area;

[0051] S11: Scale the pictures of different sizes of the field area to be identified to a fixed size to obtain a picture of a uniform size. Note that the height of the picture of the same size is H pixels, and the width is W pixels, whi...

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Abstract

The invention belongs to the technical field of intelligent account making, and provides a single character region detection method and a bill content recognition method. The method comprises the steps: obtaining a to-be-recognized field region picture, and marking a single character region in the to-be-recognized field region picture, and obtaining a single character region picture; scaling the to-be-identified field area pictures of different sizes to a fixed size; obtaining a first-layer feature map through convolution and pooling operation; extracting a field region feature map through a VGG-Net16 network; setting an initial detection frame, sending the initial detection frame to a softmax layer, and selecting a proposal window by outputting a probability score; pooling the proposal window, and normalizing the proposal window into a feature vector with a fixed size and a unified dimension; and sending the feature vector to a full connection layer, and calculating frame regression to obtain a frame offset. Through the technical scheme, the problem of low bill content identification accuracy in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of intelligent accounting, and relates to a single character area detection method and a bill content recognition method. Background technique [0002] In the field of finance and taxation, accountants need to scan or photograph various types of bills before making accounts, and identify important text content in the photographed bill pictures, such as amount, date, and name of the billing company. Because the scanner or various imaging devices will take in a lot of background information that has nothing to do with the bill when taking pictures of the bill, and due to the influence of external factors such as various types of bills, unclear content, complex shooting scenes, etc., the content of the field to be recognized There will be blurring or deformation, which will lead to low recognition accuracy of the bill content. Contents of the invention [0003] The invention proposes a single character area ...

Claims

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Application Information

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IPC IPC(8): G06K9/32G06K9/54
CPCG06V20/62G06V10/20G06V30/10
Inventor 张汉宁苏斌廖野李煜田福康弋渤海王长辉杨宏德张俊杰方红超
Owner 西安网算数据科技有限公司
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