Fingerprint template registration method based on sliding type sampling and fingerprint identification device

A fingerprint template and fingerprint recognition technology, which is applied in character and pattern recognition, acquisition/organization of fingerprints/palmprints, instruments, etc., can solve the problems of increasing the difficulty of fingerprint image splicing processing, increasing the time of fingerprint image recognition, and increasing the time of data processing, etc. , to achieve the effect of improving the user fingerprint entry experience, reducing the amount of data processing, and improving the efficiency of data processing

Pending Publication Date: 2019-07-16
FOCALTECH ELECTRONICS
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Problems solved by technology

However, sliding entry will still generate a large number of fingerprint images with a high degree of coincidence, increasing the difficulty of fingerprint image stitching in the process of fingerprint registration, resulting in increased data processing time, and after fingerprint image stitching, the image area is large, resulting in fingerprint image recognition time. increase

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  • Fingerprint template registration method based on sliding type sampling and fingerprint identification device
  • Fingerprint template registration method based on sliding type sampling and fingerprint identification device
  • Fingerprint template registration method based on sliding type sampling and fingerprint identification device

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[0134] In order to solve the problem that the adjacent fingerprint images collected in the middle stage of finger sliding still tend to have a large overlap area, the fingerprint image selection process 634 should perform image overlap screening on the images in the candidate image group, and the image comparison image can be used Matching method, feature point discrimination method of feature point data comparison, etc. The first embodiment of the present invention adopts sampling extraction method, specifically as follows:

[0135] In the candidate image group comprising sn fingerprint images obtained from the start image to the end image, each fingerprint image is sequentially numbered in the order of fingerprint collection time from front to back;

[0136] The number of valid images valid_n is determined according to the operating parameters of the fingerprint identification device; the operating parameters of the fingerprint identification device include sampling frequenc...

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Abstract

The invention provides a fingerprint template registration method based on sliding type sampling and a fingerprint identification device. The fingerprint template registration method comprises a fingerprint template input process based on sliding type sampling, the process comprises the following screening process of n fingerprint images, and the screening process comprises an initial image selection process, a terminated image selection process and a fingerprint image selection process. According to the invention, the collected fingerprint images are screened; the method has the advantages ofreducing coincident fingerprint images in the registered fingerprint image data processing process, eliminating incomplete pressing fingerprint images, screening the fingerprint images, reducing thedata processing amount in the fingerprint image registration process, improving the data processing efficiency, being beneficial to realizing rapid input of a fingerprint template, and improving the user fingerprint input experience; a sliding and pressing combined sampling mode is adopted, the advantages of the sliding and pressing combined sampling mode are combined, the defects of the sliding and pressing combined sampling mode are overcome through the screening process, and user experience and the fingerprint recognition rate are better improved.

Description

technical field [0001] The invention relates to a data processing method and device, in particular to a fingerprint data collection and processing method and a fingerprint identification device. Background technique [0002] In the implementation scheme of fingerprint identification based on a small-area sensor, the fingerprint entry methods used for fingerprint template registration include push-type entry and slide-type entry. [0003] In the prior art, the push-type entry collects the fingerprint data to be registered through multiple presses. Due to the position difference of each press, the collected fingerprint templates tend to form template islands; In addition, the push-type fingerprint entry process requires the user to perform more than a dozen or even dozens of press operations, and the user experience is poor. [0004] In the prior art, the sliding type entry collects a plurality of continuous fingerprint image data through the process of sliding a finger acros...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/13G06V40/1365
Inventor 翟剑锋龙文勇李进
Owner FOCALTECH ELECTRONICS
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