Authentication method based on fingerprints

An authentication method and fingerprint technology, applied in the field of image processing, can solve the problems affecting the extraction and recognition of fingerprint information, the elimination of false feature points in fingerprint images is not good enough, and it is not enough to reflect the global information of fingerprint images, etc., so as to achieve high execution efficiency, Easy to implement and improve the recognition success rate

Inactive Publication Date: 2015-07-29
CHENGDU YINGLITUO INFORMATION TECH
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  • Summary
  • Abstract
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Problems solved by technology

In the fingerprint image quality evaluation, the existing technology evaluates the fingerprint image quality by extracting the contrast and curvature feature quality of each sub-block of the fingerprint image, but this method only analyzes the local texture of the fingerprint image, which is not enough to reflect the global information of the fingerprint image; When the image noise is large, the orientation map of the fingerprint image cannot be obtained very well. In addition, the elimination of false feature points for non-uniformly collected fingerprint images is not good, which affects the final fingerprint information extraction and recognition.

Method used

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Embodiment Construction

[0023] The following and accompanying appendices illustrating the principles of the invention Figure 1 A detailed description of one or more embodiments of the invention is provided together. The invention is described in connection with such embodiments, but the invention is not limited to any embodiment. The scope of the invention is limited only by the claims and the invention encompasses numerous alternatives, modifications and equivalents. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. These details are provided for the purpose of example and the invention may be practiced according to the claims without some or all of these specific details.

[0024] One aspect of the present invention provides a fingerprint-based authentication method. figure 1 It is a flow chart of the fingerprint-based authentication method according to the embodiment of the present invention. The presen...

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Abstract

The invention provides an authentication method based on fingerprints. The method comprises the step of: collecting the fingerprints by utilizing a fingerprint identification device. When a quality evaluation parameter of a collected fingerprint image is less than a preset quality threshold, a user is prompted, and the fingerprints are recollected. The invention provides the authentication method based on the fingerprints, so that the user visually knows about the image quality, the identification success rate is increased, the implementation is easy, and the execution efficiency is high.

Description

technical field [0001] The invention relates to image processing, in particular to a fingerprint-based authentication method. Background technique [0002] Fingerprints are widely used in personal identification devices all over the world. Fingerprint recognition has become a key technology for personal affairs and information security. In the fingerprint image quality evaluation, the existing technology evaluates the fingerprint image quality by extracting the contrast and curvature feature quality of each sub-block of the fingerprint image, but this method only analyzes the local texture of the fingerprint image, which is not enough to reflect the global information of the fingerprint image; When the image noise is large, the orientation map of the fingerprint image cannot be obtained very well. In addition, the elimination of false feature points for the non-uniformly collected fingerprint image is not good, which affects the final fingerprint information extraction and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/1359
Inventor 田野夏梅宸刘志才祝昌宇卢力君
Owner CHENGDU YINGLITUO INFORMATION TECH
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