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Fingerprint recognition method and fingerprint recognition chip for improving fingerprint recognition rate

A fingerprint identification and fingerprint technology, applied in the direction of acquiring/arranging fingerprints/palmprints, character and pattern recognition, instruments, etc.

Pending Publication Date: 2020-03-03
FOCALTECH ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to avoid the deficiencies of the prior art and propose a fingerprint identification method that adds a global verification process to fingerprint samples that do not match the fingerprint comparison, and a fingerprint identification chip using this method, so as to achieve The purpose of improving fingerprint recognition performance

Method used

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  • Fingerprint recognition method and fingerprint recognition chip for improving fingerprint recognition rate
  • Fingerprint recognition method and fingerprint recognition chip for improving fingerprint recognition rate
  • Fingerprint recognition method and fingerprint recognition chip for improving fingerprint recognition rate

Examples

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Effect test

no. 2 example

[0197] For the second embodiment, for the coincident matching fingerprint template Match 1 And matching fingerprint template Match 2 , matching the fingerprint template Match 2 The matching fingerprint template index number index 2 =2 is the largest, thus retaining the matching fingerprint template Match 2 The coincident part, while the matching fingerprint template Match is eliminated 1 The matching feature points in the overlapping part, that is, the matching fingerprint template 121 forms the first matching fingerprint template part 1211 after eliminating the matching feature points in the overlapping part.

[0198] The second feature point elimination rule:

[0199] Index number index of matching fingerprint template based on the third descriptor x , the feature point elimination rule can also be, for the matching fingerprint template Match that constitutes the same overlapping part x The eigenvectors of The matching feature points, retain the matching fingerprint te...

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Abstract

The invention relates to a fingerprint recognition method for improving a fingerprint recognition rate and a fingerprint recognition chip. On the basis of a fingerprint matching standard, performing aglobal verification process on the fingerprint samples which are not matched, and on the basis of a fingerprint matching sub-standard, finding out matched fingerprint templates and splicing the matched fingerprint templates into a global fingerprint template; and comparing the fingerprint sample with the global fingerprint template based on a fingerprint matching standard. The overlapping area ofthe fingerprint sample and the global fingerprint template is increased, the comparison and matching success rate is improved, the fingerprint recognition rate is increased, the FRR performance and the FAR performance are improved, and especially for a fingerprint recognition chip adopting a small-area fingerprint collection sensor, the fingerprint recognition unlocking experience effect is improved.

Description

technical field [0001] The invention relates to a data processing method, that is, a device for realizing the method, in particular to a fingerprint recognition data processing method and a fingerprint recognition device. Background technique [0002] The fingerprint identification method in the prior art usually traverses and compares the fingerprint sample collected by the fingerprint acquisition sensor with the fingerprint template stored in the fingerprint identification chip. If a fingerprint template matching the fingerprint sample is found, the fingerprint is compared and matched, and the fingerprint identification is successful; Find a fingerprint template that matches the fingerprint sample, if the fingerprint comparison does not match, the fingerprint recognition fails. One of the relevant factors affecting the fingerprint recognition rate is the overlapping area of ​​the fingerprint sample and the fingerprint template. Generally, when the overlapping area of ​​th...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/12G06V40/1365
Inventor 龙文勇翟剑锋张靖恺
Owner FOCALTECH ELECTRONICS
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