Multi-stage fingerprint database search method

A database and fingerprint technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as fingerprint image displacement and rotation changes, achieve overcoming rotation and displacement, high academic application value, improve reliability and The effect of stability

Inactive Publication Date: 2012-03-07
CHANGZHOU LENCITY INFORMATION TECH
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to propose a multi-level fingerprint database retrieval method, which can overcome the shortcomings of the traditional fingerprint database retrieval method based on minutiae and texture features, and through wavelet-based multi-resolu

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-stage fingerprint database search method
  • Multi-stage fingerprint database search method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The present invention will now be described in further detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0015] The embodiment of the multi-level fingerprint database retrieval method based on the invariant moment feature of the present invention, based on the invention research plan and theoretical block diagram, we perform three-level retrieval on the fingerprint database, that is, use the singular point to perform the first-level classification, and use the singular point The second-level classification is carried out on the information between points, and the third-level classification is carried out by using the invariant moment feature, so as to achieve the purpose of fast and accurate retrieval. The following are respect...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a multi-stage fingerprint database search method. The method comprises the following steps of: performing first-stage classification by using singular points; performing second-stage classification by using information between the singular points; and performing third-stage classification based on invariant moment characteristic. In the invariant moment characteristic-based multi-stage fingerprint database search method, the invariant moment characteristic is introduced on the existing basis to establish a three-stage search mechanism; and at the third stage, the defect of being influenced by rotation and displacement of an input image is overcome by extracting orthogonal invariant moment characteristic of a fingerprint image ROI (Region Of Interest) with the same reference point, so that the reliability and the stability of the system are improved. A research result has a higher academic application value in the fields of fingerprint image analysis, recognition, image retrieval, information security and the like.

Description

technical field [0001] The invention relates to a multi-level fingerprint database retrieval method, which performs fingerprint database indexing through fingerprint categories, information between singular points and invariant moment features. Background technique [0002] Image database technology is the product of the combination of image processing technology and database technology. Traditional databases mainly process text and numbers. With the development of image database technology, indexing technology based on relational databases can no longer efficiently process image databases. The indexing mechanism and matching method of the fingerprint database are also very different from those of the image database. Practice has shown that fingerprint identification technology has high accuracy and reliability today. The application of various fingerprint identification technologies needs to be connected with the fingerprint database, and the scale of the fingerprint data...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F17/30
Inventor 吴军刘华平周一峰张辉
Owner CHANGZHOU LENCITY INFORMATION TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap