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Fingerprint image noise reduction method and device

A fingerprint image and noise reduction technology, applied in the field of image processing, can solve problems such as user inconvenience, fingerprint recognition impact, misrecognition, etc., and achieve the effect of low error rate, high recognition rate, and noise reduction.

Pending Publication Date: 2022-03-22
上海海栎创科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the images collected by the fingerprint collection modules currently on the market often contain noise such as stripe noise, white noise, and Gaussian noise, which will affect the final fingerprint recognition, and even cause misidentification in severe cases, causing harm to users. inconvenient

Method used

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  • Fingerprint image noise reduction method and device

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Embodiment Construction

[0055] In the following description, in order to enable the reader to better understand the application and made many technical details. However, those of ordinary skill in the art can be appreciated, without these technical details and various changes and modifications based on the following embodiments, the present application may also be implemented as claimed in claim technical solution.

[0056]In order to make the objects, technical solutions, and advantages of the present invention, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0057] One embodiment of the present application discloses a fingerprint image noise reduction device, reference figure 1 As shown, the apparatus includes: image input module 110, a first feature extractor (a) 121, a second feature extractor (B) 122, a third feature extractor (C) 123, and a fourth feature extractor (D) 124, the fifth feature extractor (C1) 125, the si...

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Abstract

The invention discloses a fingerprint image noise reduction method and a fingerprint image noise reduction device, which are used for reducing noise interference. Comprising the following steps: extracting a first graph with the height of h, the width of w and the number of channels na; sampling to obtain a second graph with the height of h / 2, the width of w / 2 and the number of channels na; extracting a third graph with the height of h / 2, the width of w / 2 and the number of channels nb; sampling to obtain a fourth graph with the height of h / 4, the width of w / 4 and the number of channels nb, extracting a fifth graph with the height of h / 4, the width of w / 4 and the number of channels nc, and sampling to obtain a sixth graph with the height of h / 8, the width of w / 8 and the number of channels nc; extracting a seventh image with the height of h / 8, the width of w / 8 and the number of channels nd, and sampling to obtain an eighth image with the height of h / 4, the width of w / 4 and the number of channels nd; extracting a ninth image with the height of h / 4, the width of w / 4 and the number of channels nc from the fifth image and the eighth image, and sampling to obtain a tenth image with the height of h / 2, the width of w / 2 and the number of channels nc; extracting an eleventh graph with the height of h / 2, the width of w / 2 and the number of channels nb from the third graph and the tenth graph, and sampling to obtain a twelfth graph with the height of h, the width of w and the number of channels nb; a thirteenth graph with the height h, the width w and the channel number na is extracted from the first graph and the twelfth graph.

Description

Technical field [0001] The present invention belongs to the technical field of image processing, to a fingerprint image denoising method and apparatus. Background technique [0002] With the development of science and technology, fingerprint recognition technology more widely. But now the market saw the fingerprint image acquisition module collected there is often a stripe noise, white noise, Gaussian noise and other noise, it will eventually affect fingerprint recognition, even when serious cause false consciousness, causing the user inconvenient. Inventive content [0003] Object of the present invention is to provide a fingerprint image denoising method and apparatus capable of reducing noise of the fingerprint image, the fingerprint recognition algorithm identifies such higher rates, lower error rates. [0004] One embodiment of the present application discloses a fingerprint image noise reduction apparatus, comprising: an image input module, the first to seventh feature ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06V40/12G06V10/30G06V10/44G06V10/82G06N3/04G06N3/08
CPCG06N3/084G06N3/048G06N3/045
Inventor 赵晓刚吉贝贝夏军营
Owner 上海海栎创科技股份有限公司
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