Method for reducing false reject rate of fingerprint comparison

A technology of rejection rate and fingerprints, applied in the fields of instruments, character and pattern recognition, computer parts, etc., can solve the problems of high rejection rate of fingerprint comparison and small fingerprint area, and achieve improved adaptability and low rejection rate. , the effect of strong environmental adaptability
CN102254167AActive Publication Date: 2011-11-23HANGZHOU SYNOCHIP DATA SECURITY TECH CO LTD
2 Cites 20 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HANGZHOU SYNOCHIP DATA SECURITY TECH CO LTD
Publication Date
2011-11-23

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a method for reducing the false reject rate of fingerprint comparison. The method comprises the following steps of: extracting fingerprint characteristics by a fingerprint sensor; quickly searching in a plurality of templates, and comparing the templates with the existing template to obtain the highest comparison score; and judging whether comparison passes according to acomparison passing rule, and replacing the templates or not according to an auxiliary template replacement rule. The method has the advantages that: an auxiliary template is added and dynamically updated in an application process, so the capacity for environmental adaptation of the sensor is greatly improved, anti-aging capacity is improved, the range of a comparison object is expanded, and the false reject rate is effectively reduced; the fingerprint characteristics in a fingerprint comparison auxiliary threshold interval are required to be compared with fingerprint templates one by one; andwhen more than two characteristic comparison scores are in the fingerprint comparison auxiliary threshold interval, comparison is determined to pass, so the false reject rate of the fingerprint comparison is effectively reduced under the condition that no false accepting is guaranteed.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the application field with a high rejection rate of a fingerprint sensor, in particular to a method for reducing the rejection rate of fingerprint comparison. Background technique

[0002] With the development of society, information security is becoming more and more important, and human body feature recognition technology is also becoming more and more important. Applying fingerprint locks to notebooks, chassis and even mice can protect files and systems and carry out identity recognition. However, most fingerprint security products are faced with the problem of a very high rejection rate during fingerprint comparison due to factors such as the small fingerprint area collected by the fingerprint sensor, different parts of the fingerprint collected each time, environmental changes, and sensor aging.

[0003] Concise steps for existing protocols (such as figure 1 shown):

[0004] Step 1: Power on the system, the main controll...

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