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Fingerprint comparison method and device

A comparison and fingerprint technology, applied in the field of image processing, can solve problems such as reducing the comparison efficiency and prolonging the comparison time.

Active Publication Date: 2019-03-26
BYD SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] However, when the user often uses a certain finger, such as a finger that matches the fifth fingerprint template image, it is necessary to compare the fingerprint image to be compared with the above five fingerprint template images to determine whether there is a fingerprint that matches the fifth fingerprint template image in the fingerprint template library. Compare the fingerprint image with the matching fingerprint template image, which reduces the comparison efficiency and prolongs the comparison time

Method used

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  • Fingerprint comparison method and device
  • Fingerprint comparison method and device

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Embodiment Construction

[0070] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0071] The fingerprint matching method and device according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0072] figure 1 It is a schematic flowchart of a fingerprint matching method provided by an embodiment of the present invention.

[0073] Such as figure 1 As shown, the fingerprint comparison method includes the following steps:

[0074] Step 101, collecting fingerprint images to be compared.

[0075] The fingerprint comparison method provided in this em...

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Abstract

The invention provides a fingerprint comparison method and device, wherein, the method comprises the following steps: acquiring a fingerprint image to be compared; According to the ridge distance andcurvature in the fingerprint image to be compared, the type of the fingerprint image to be compared, the ridge distance and curvature in each fingerprint template image in the preset fingerprint template library, the type of each fingerprint template image and the comparison success rate, calculating the matching score between the fingerprint image to be compared and each fingerprint template image; The fingerprint template images are sorted according to the matching scores, The fingerprint images to be compared and the fingerprint template images in the sorting result are sequentially compared to determine whether there are fingerprint template images matched with the fingerprint images to be compared in the fingerprint template library, so that the average number of fingerprint templateimages to be compared each time can be reduced, the average matching time can be shortened, and the matching efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a fingerprint comparison method and device. Background technique [0002] At present, in the fingerprint comparison technology, the fingerprint image to be compared is usually compared with the fingerprint template images in the fingerprint template library in a fixed order. For example, the fingerprint template library has the first fingerprint template image, the For the second fingerprint template image, the third fingerprint template image, the fourth fingerprint template image and the fifth fingerprint template image, the fingerprint image to be compared is compared with the above-mentioned fingerprint template images in sequence. [0003] However, when the user often uses a certain finger, such as a finger that matches the fifth fingerprint template image, it is necessary to compare the fingerprint image to be compared with the above five fingerprint template image...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/1376
Inventor 雷磊徐坤平杨云
Owner BYD SEMICON CO LTD
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