Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Acquisition and splicing method of three-face rolling fingerprint

A fingerprint and fingerprint image technology, which is used in the collection and splicing of three-sided rolling fingerprints, can solve the problems of poor quality, easy damage and difficulty of fingerprints, and achieve the effect of complete fingerprints, easy comparison and accurate collection.

Inactive Publication Date: 2004-11-03
北京海鑫科金信息技术有限公司
View PDF0 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing method of collecting three-sided rolling fingerprints is to use ink printing to collect them, and then make them into fingerprint cards and store them. However, the fingerprints collected by this method are of poor quality and are easily damaged. It is also difficult to compare

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
  • Acquisition and splicing method of three-face rolling fingerprint
  • Acquisition and splicing method of three-face rolling fingerprint
  • Acquisition and splicing method of three-face rolling fingerprint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0037] figure 1 It is the flow chart of the collection and splicing method of the three-sided rolling fingerprint of the present invention, as figure 1 As shown, the collection and splicing method of three-sided rolling fingerprint of the present invention comprise:

[0038] 1) collect the background image, collect a frame of background image before the finger starts printing (S11);

[0039] 2) Collecting serial fingerprints, the finger scrolls on the collection window, and a serial fingerprint image is collected during the scrolling process (S12);

[0040] 3) removing the background from the fingerprint image, and subtracting the collected sequence fingerprint from the background image (S13);

[0041] 4) mapping the histogram of the image obtained in step 3) into a histogram of uniform distribution of all gray levels in an image (S14); ...

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 three-sided rolling fingerprint acquiring and splicing process includes acquiring background image, acquiring serial fingerprint, eliminating background from the fingerprint image, mapping the image histogram to form histogram with homogeneously distributed grey scale, Gaussian smoothing treatment, calculating threshold and binarizing the image with the threshold, judging whether to have fingerprint in the image and acquiring the next image if no or progressing the next step if yes, calculating the center and four boundaries of the fingerprint, acquiring the next sequential image and repeating the forgoing steps, obtaining the maximum correlating block between the two sequential fingerprint image and its center line as the optimal splicing line, eliminating dislocation in the splicing line to splice two fingerprint images, repeating the foregoing steps until no fingerprint input.

Description

technical field [0001] The invention relates to a method for collecting and splicing fingerprints, in particular to a method for collecting and splicing three-sided rolling fingerprints. Background technique [0002] Due to the stability and uniqueness of the fingerprint itself, the fingerprint plays a huge role in identification. Fingerprint collection can be divided into flat fingerprint collection and three-sided rolling fingerprint collection. [0003] Planar fingerprints are usually used in civilian applications. It is mostly used in the case of 1:1 comparison, that is, for verification. When verifying, the system compares the fingerprints collected by the current printing with the fingerprints stored in the database during the original registration. The quality of the fingerprints stored in the database at the time of registration is relatively good and the comparison is 1:1, so when used In the verification technology, relatively few fingerprint feature points are r...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/20G06T5/40
Inventor 陆乃将夏志敏刘晓春虞秀华
Owner 北京海鑫科金信息技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com