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Focusing method and apparatus in the mode of holding certificate in hands

A focusing method and certificate technology, applied in the field of image processing, can solve problems such as unclear information, poor user experience of users, network authentication failure, etc., and achieve the effect of improving recognition speed, reducing the number of calculations, and increasing speed

Active Publication Date: 2016-06-15
XIAOMI INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the related technology, in the shooting mode of the handheld certificate, the information on the certificate is often not clear enough in the captured image, which easily leads to network authentication failure, thereby bringing a bad user experience to the user

Method used

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  • Focusing method and apparatus in the mode of holding certificate in hands
  • Focusing method and apparatus in the mode of holding certificate in hands
  • Focusing method and apparatus in the mode of holding certificate in hands

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0120] Example 1: The terminal device determines the document candidate area in the image to be focused according to the position distribution relationship between the face of the subject to be photographed and the document to be photographed.

[0121] In the handheld document shooting mode, in order to make the face of the subject to be photographed and the document to be photographed fall into the captured image, there is a certain positional relationship between the face and the document. Generally, the document is located on the left or right side of the face in the area.

[0122] After the terminal device determines the face area from the image to be focused, it demarcates the ID candidate area in the left and right preset ranges of the face area, and determines the ID area from the ID candidate area.

example 2

[0123] Example 2: The terminal device determines whether there is a portrait of the subject to be photographed on the document to be photographed, and if so, determines the position of the portrait of the subject to be photographed in the image to be focused on; according to the position of the portrait of the subject to be photographed, determines the candidate document in the image to be photographed area.

[0124] In the hand-held ID shooting mode, sometimes there will be a portrait of the subject to be photographed on the document to be photographed, and the general portrait of the subject to be photographed is relatively easy to identify. At this time, you can first determine the position of the portrait on the document, and then focus on the subject according to the position of the portrait. Identify document candidate areas in the image.

[0125] In step 204, N scan images are obtained from the candidate area of ​​the certificate by adopting a pyramid level traversal sc...

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PUM

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Abstract

The invention belongs to the image processing field, and specifically relates to a focusing method and apparatus in the mode of holding certificate in hands. The focusing method in the mode of holding certificate in hands comprises the steps: acquiring an image to be focused; determining a face region from the image to be focused; according to the face region, utilizing a certificate identification model to determine a certificate region in the image to be focused, wherein the certificate identification model is obtained through training of a training sample set and is used for identifying the character content in the image; and determining the face region and the certificate region as the focusing regions to carry out focusing. The focusing method can determine the face region and the certificate region in the image to be focused and focus the face region and the certificate region so as to improve the definition of the information on the certificate in the taken image.

Description

technical field [0001] The present disclosure relates to the field of image processing, and in particular to a focusing method and device in a hand-held certificate mode. Background technique [0002] With the development of information technology, there are more and more applications of non-contact authentication based on the network. In various non-contact authentication application scenarios, it is often necessary for the user to hold the relevant certificate to take pictures. [0003] In related technologies, in the shooting mode of holding a certificate, the information on the certificate is often not clear enough in the captured image, which easily leads to network authentication failure, thus bringing a bad user experience to the user. Contents of the invention [0004] In order to overcome the problems in the related technologies, the present disclosure provides a focusing method and device in the mode of holding a certificate, so as to improve the clarity of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/161G06V40/172
Inventor 张涛王百超张胜凯
Owner XIAOMI INC
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