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Identity card element extraction method and device

A technology of ID card and ID card number, applied in the field of ID card identification, can solve the problems of background interference and large results.

Pending Publication Date: 2020-11-06
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a method and device for extracting elements of an ID card to at least solve the problem in the related art that the method of segmenting character lines based on binary image projection is greatly affected by background interference

Method used

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  • Identity card element extraction method and device
  • Identity card element extraction method and device
  • Identity card element extraction method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] The method embodiment provided in Embodiment 1 of the present application may be executed in a mobile terminal, a computer terminal, or a similar computing device. Taking running on a mobile terminal as an example, figure 1It is a block diagram of the hardware structure of the mobile terminal of the ID card element extraction method of the embodiment of the present invention, as figure 1 As shown, the mobile terminal may include one or more ( figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data. Optionally, the above-mentioned mobile terminal also A transmission device 106 for communication functions as well as input and output devices 108 may be included. Those of ordinary skill in the art can understand that, figure 1 The shown structure is only for illustration, and does not limit the structu...

Embodiment 2

[0181]According to another aspect of the embodiments of the present invention, an ID card element extraction device is also provided, Figure 7 is a block diagram of an ID card element extraction device according to an embodiment of the present invention, as Figure 7 As shown, it includes: a correction module 72, a determination module 74, and an extraction module 76, wherein the correction module 72 corresponds to the above-mentioned image correction module 32, and the functions of the determination module 74 and the extraction module 76 pass through the above-mentioned text detection module 34 and layout analysis module 36 and a partial or full implementation of the text recognition module 38, wherein,

[0182] Correction module 72, for correcting the acquired ID card image, to obtain a target image matched with a pre-stored standard ID card template;

[0183] A determining module 74, configured to determine the character block detection frame of the target image by perfor...

Embodiment 3

[0226] Embodiments of the present invention also provide a computer-readable storage medium, in which a computer program is stored, wherein the computer program is set to execute the steps in any one of the above method embodiments when running.

[0227] Optionally, in this embodiment, the above-mentioned storage medium may be configured to store a computer program for performing the following steps:

[0228] S1, correcting the acquired ID card image to obtain a target image matching the pre-stored standard ID card template;

[0229] S2. Determine a character block detection frame of the target image by performing character block detection on the target image;

[0230] S3, extracting ID card elements based on the character block detection frame.

[0231] Optionally, in this embodiment, the above-mentioned storage medium may include but not limited to: U disk, read-only memory (Read-Only Memory, ROM for short), random access memory (Random Access Memory, RAM for short), Vario...

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Abstract

The invention provides an identity card element extraction method and device, and the method comprises the steps of correcting an obtained identity card image, and obtaining a target image matched with a pre-stored standard identity card template; determining a character block detection box of the target image by performing character block detection on the target image; extracting identity card elements based on the character block detection box. The invention can solve a problem that a mode of character line segmentation based on binary image projection is greatly affected by background interference in the prior art. Through correction, the identity card image with rotation and perspective can also have a good recognition effect, identity card elements are extracted based on the characterblock detection box, high-quality text line positioning information is provided for text recognition, and the recognition stability is improved.

Description

technical field [0001] The invention relates to the technical field of ID card identification, in particular to a method and device for extracting elements of an ID card. Background technique [0002] An ID card is a document used to prove the identity of the holder, and is mostly granted to citizens by the governments of various countries or regions. As an important identity certificate, it plays a very important role in the actual life and job selection of citizens, for example, when citizens handle household registration, marriage registration, school enrollment, employment, notarization, going to border management areas, In the process of applying for exit procedures, etc., submitting identity documents is an indispensable and important step. [0003] At present, the ID card reader used in the main application scenarios is completed by identifying the internal chip of the ID card. The core chip of the card reader is expensive and the cost is relatively high. [0004] A...

Claims

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Application Information

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IPC IPC(8): G06K9/32G06K9/34G06K9/00
CPCG06V30/414G06V10/242G06V20/62G06V10/267G06V30/10
Inventor 曾强陈媛媛熊剑平
Owner ZHEJIANG DAHUA TECH CO LTD
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