Method for reducing false reject rate of fingerprint comparison

Abstract

The invention relates to a method for reducing the rejection rate of fingerprint comparison. The fingerprint feature is extracted by a fingerprint sensor, quickly searched among many templates, and compared with the existing templates to obtain the highest comparison score; the comparison is judged according to the comparison passing rules Whether it is passed, the template is replaced or not replaced according to the secondary template replacement rules. The beneficial effects of the present invention are: the auxiliary template is added, and the auxiliary template is dynamically updated during the application process, which greatly improves the adaptability of the sensor to the environment, improves the anti-aging ability, and increases the range of comparison objects to effectively The rejection rate is reduced; at the same time, the fingerprint comparison assists the threshold interval. The fingerprint features in this interval need to be compared with the fingerprint template one by one. If the comparison scores of more than two features are found within this interval, the comparison Yes, this effectively reduces the rejection rate of fingerprint comparison while ensuring that no false identification is made.

Description

Technical field [0001] The invention involves the application field with a high refusal rate of fingerprint sensors, especially a way to reduce fingerprint comparison. Background technique [0002] With the development of society, information security is becoming more and more important, and human characteristics recognition technology is becoming more and more important. Applying fingerprints to notebooks, chassis, and even mouses can protect the files and systems and identify identity.However, because most fingerprint safety products are facing the problem of the fingerprint area of the fingerprint sensor, the fingerprint area is small, each collected fingerprint part, the environmental change, and the aging of the sensor is very high. [0003] The existing solution is concise steps (such as figure 1 Show): [0004] Step 1: The system is powered on. The main controller initializes the fingerprint sensor and sets the preset parameter; [0005] Step 2: Wait for instructions to en...

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to solve the deficiencies of the above-mentioned technologies, that is, to solve the problem that the fingerprint sensor collects fingerprints with a small area, different fingerprints are collected each time, environmental changes, sensor aging and other factors cause a very high rejection rate when comparing fingerprints. , and provide a method to reduce the rejection rate of fingerprint comparison

Images