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Fingerprint information processing method

An information processing method and a fingerprint technology, which are applied in the field of image processing, can solve the problems that affect the extraction and identification of fingerprint information, the false feature point elimination result of the fingerprint image is not good, and the global information of the fingerprint image cannot be reflected enough, and it is easy to realize, The effect of high execution efficiency and improved recognition success rate

Inactive Publication Date: 2015-07-29
CHENGDU YINGLITUO INFORMATION TECH
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

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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  • Fingerprint information processing method
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Embodiment Construction

[0026] 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.

[0027] One aspect of the present invention provides a fingerprint information processing method. figure 1 is a flowchart of a fingerprint information processing method according to an embodiment of the present invention. The present i...

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Abstract

The invention provides a fingerprint information processing method, which comprises the following steps of uniformly carrying out normalization processing on images and carrying out image segmentation; carrying out image enhancement through image smoothing and median filtering; converting gray level images into binaryzed images by utilizing a dynamic threshold value; carrying out fining processing on the images, and deleting pseudo characteristic points. The invention provides the fingerprint information processing method; a user is enabled to intuitively know image quality; moreover, the identification success rate is improved; the fingerprint information processing method is easy to realize; moreover, the execution efficiency is higher.

Description

technical field [0001] The invention relates to image processing, in particular to a fingerprint information processing 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 an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/54G06K9/40G06K9/46
CPCG06V10/443G06V10/30G06V10/36G06V2201/03
Inventor 田野夏梅宸刘志才祝昌宇卢力君
Owner CHENGDU YINGLITUO INFORMATION TECH
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