Fingerprint recognizer for automatic adjustment processing and its recognition method

A fingerprint reader and automatic adjustment technology, which is applied in the direction of acquiring/arranging fingerprints/palmprints, character and pattern recognition, instruments, etc., can solve the problems of multiple cost and large size of sensing elements, and achieve fast adjustment speed and good image quality , The effect of high image completion

Active Publication Date: 2019-02-12
世维人工智能(嘉兴)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above-mentioned existing problems in the prior art that optical fingerprint identification requires a relatively large volume and requires a large number of sensing elements and high cost, and provides an automatic adjustment processing fingerprint reader and its identification method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A fingerprint recognizer for automatic adjustment processing, comprising a sensing surface, an analog-to-digital conversion unit, a processor, a random read-write memory, a bus interface and a computer, the sensing surface is provided with an array of sensing elements, and the array of sensing elements passes through a module The digital conversion unit is electrically connected to the processor, the processor is electrically connected to the computer through a bus interface, the random access memory is electrically connected to the processor, and the sensing element is a capacitive sensing element.

[0024] An automatic adjustment processing fingerprint identification method is applicable to the above-mentioned automatic adjustment processing fingerprint identification device, comprising the following steps:

[0025] Step 1, each time the fingerprint reader with automatic adjustment processing is restarted, the initialization is performed, and the initial adjustment of ...

Embodiment 2

[0038] It is basically the same as Example 1, the difference is that there is a contrast difference between the images of all contrast areas after denoising, and it is determined that there is the most average gray value in the image of the contrast area, and the gray value is averaged according to the preset The value is expanded to a range value and this range value is determined as the reference gray value, the overall gray value of the contrast area close to the reference gray value is maintained, and then the overall gray value of the contrast area far from the reference gray value is adjusted , adjust the gray values ​​of all images in the comparison area to be consistent and then merge them to obtain the reference image; at the same time, determine that there is an average gray value in the image of the comparison area that is the second-to-last least, and expand the second-to-last least to range value and determine this range value as the anti-reference gray value, then...

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PUM

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Abstract

The invention relates to a fingerprint reader with automatic adjustment processing, which solves the deficiencies in the prior art. The technical solution is: including a sensing surface, an analog-to-digital conversion unit, a processor, a random read-write memory, a bus interface and a computer. The surface is provided with an array of sensing elements, the array of sensing elements is electrically connected to the processor through an analog-to-digital conversion unit, the processor is electrically connected to the computer through a bus interface, and the random read-write memory is connected to the processing electrical connection. The present invention has a small overall volume and is suitable for fingerprint unlocking of mobile phones. It only needs to add a sensing surface at a specific part to achieve the corresponding purpose of the invention, and can obtain high recognition degree and fast recognition speed while being small in size.

Description

technical field [0001] The invention relates to a fingerprint recognizer, in particular to a fingerprint recognizer with automatic adjustment processing and a recognition method thereof. Background technique [0002] At present, most of the domestic fingerprint recognition technologies are based on image recognition technology. Generally speaking, when the finger is photographed on the recognizer, the image of the finger is obtained and then compared. However, fingerprint identification in optical form requires a larger volume, more sensing elements, and higher cost. Although the recognition rate is high, there are many problems in some places where the volume of the elements is required, for example, Nowadays, it is difficult to achieve correct identification through optical identification for fingerprint unlocking of mobile phones. Under normal circumstances, it is difficult to achieve such a small volume. In the case of mobile phones with a high degree of integration, it ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
CPCG06V40/1347G06V40/1306G06V40/1365
Inventor 吴洋
Owner 世维人工智能(嘉兴)有限公司
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