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Compression method and system for fingerprint descriptor

A compression method and descriptor technology, applied in image data processing, instrument, character and pattern recognition, etc., can solve the problems of space efficiency and time efficiency to be improved, large templates, redundant coding methods, etc., to reduce time and space. complexity, reducing complexity, and reducing the effect of redundant information

Inactive Publication Date: 2017-07-28
TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

However, the existing minutiae descriptor MCC (Minutiae Cylinder Code, minutiae cylinder code) contains a lot of useless fingerprint features due to the redundant coding method, resulting in too large a template, and the space efficiency and time efficiency need to be improved. needs to be improved

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  • Compression method and system for fingerprint descriptor
  • Compression method and system for fingerprint descriptor
  • Compression method and system for fingerprint descriptor

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Embodiment Construction

[0031] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be construed as limiting the present invention.

[0032] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and are not intended to limit the invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and c...

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Abstract

The present invention disclose a compression method and system for fingerprint descriptor. Among them, the compression method includes the following steps: obtaining the posture information of the training fingerprint image;The details of the details of multiple details describing the sub -MCC of the sub -fingerprint image of the fingerprint of the fingerprint with statistical details; the details describing the sub -MCC of the details of the sub -node MCC according to the distribution rules, and according to the compressed details of the details, the description of the fingerprint recognition of the fingerprint recognition of the fingerprint identificationEssenceAccording to the compression method of the fingerprint descriptor of the embodiment of the present invention, the distribution rules of the fingerprint image by training the statistical details of the fingerprint image, and compress the details of the descriptor MCC according to the distribution rules, for fingerprint recognition to remove the redundant redundant redundantFeatures, which improves spatial efficiency and time efficiency, not only ensure fingerprint recognition accuracy, but also improve fingerprint recognition efficiency.

Description

Technical field [0001] The present invention relates to the technical field of fingerprint feature description, in particular to a method and system for compressing fingerprint descriptors. Background technique [0002] Because fingerprints have important properties such as uniqueness, universality and lifetime immutability, the use of fingerprint images for identity recognition has a long history. Especially in the field of public security criminal investigation, since the early 20th century, fingerprints have gradually become one of the most important evidence for law enforcement agencies to arrest and convict criminals. In recent years, the development and maturity of automatic fingerprint identification technology has made fingerprint identification widely used in public security criminal investigations, immigration, access control systems, and authorization control of important equipment. [0003] Specifically, commonly used fingerprint features can be roughly divided into th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62G06T9/00G06T7/44
Inventor 周杰冯建江苏毅婧
Owner TSINGHUA UNIV
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