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Card image fuzzy detection method and device

A fuzzy detection, image technology, applied in the field of image processing, can solve problems such as errors, related information input failure, information cannot be recognized and recognized results, etc., and achieve the effect of high detection accuracy

Active Publication Date: 2019-05-14
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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AI Technical Summary

Problems solved by technology

However, if the obtained image is blurred, the information will not be recognized or the recognition result will be wrong, which may eventually lead to the failure of relevant information entry

Method used

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  • Card image fuzzy detection method and device
  • Card image fuzzy detection method and device
  • Card image fuzzy detection method and device

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Embodiment Construction

[0090] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0091] The embodiments of the present disclosure can be applied to the scene where the verification information is uploaded after taking pictures of card-type documents such as certificates, and is especially suitable for the scene where the certificate is photographed with a hand-held terminal device or the certificate is photographed with a hand-held terminal device, because in both cases, the ...

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Abstract

The disclosure relates to a card image blur detection method and device, and belongs to the technical field of image processing. The method includes: acquiring a card image; determining each line of character areas in the card image; calculating the gradient of each pixel in each line of the character area, the gradient including gradients in at least two directions; according to the calculated the gradient, generating at least two gradient distribution maps of the card image, each gradient distribution map corresponding to one of the at least two directions; based on the at least two gradient distribution maps, determining whether the card image is blurred . The device includes an image acquisition module, a character area determination module, a gradient calculation module, a generation module and a blur determination module. The embodiments of the present disclosure can effectively detect whether the card image is blurred.

Description

technical field [0001] The present disclosure relates to the technical field of image processing, in particular to a card image blur detection method and device. Background technique [0002] In people's daily life, it is often necessary to obtain relevant information from card-type documents such as certificates. With the rapid development of technologies such as computers and image processing, the use of computers to automatically identify and enter relevant information has become more and more popular. [0003] In related technologies, images of card-type files are usually captured by shooting or scanning, and then the captured images are processed and analyzed to automatically identify and extract relevant information in the images. However, if the obtained image is blurred, the information will not be recognized or the recognition result will be wrong, which may eventually lead to the failure of relevant information entry. Therefore, it is particularly important to de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06K9/46
CPCG06T7/0002G06T2207/30168G06V10/507G06V30/10
Inventor 王百超范金松杨松
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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