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Fingerprint acquisition method, fingerprint acquisition device and electronic device

An electronic device and fingerprint collection technology, which is applied in print image collection, fingerprint/palmprint acquisition/organization, instruments, etc., can solve the problems of low recognition rate, many user entry times, invalid fingerprint entry, etc., and achieve good user experience, The effect of overcoming the problem of invalid entry

Inactive Publication Date: 2016-03-02
DONGGUAN COOLPAD SOFTWARE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing technologies generally collect fingerprints based on a push-type fingerprint sensor. Push-type fingerprint collection is prone to the problem of invalid fingerprint entry. For example, there is no overlap between the fingerprint areas pressed multiple times, that is, island fingerprints, or the overlapping area is too large. At this time, it is difficult to Stitching out a complete fingerprint, resulting in the need for the user to press the sensor multiple times to collect fingerprint information that meets normal needs. For example, for a sensor with a larger sensing area (the larger the sensor area, the more fingerprint information obtained by a single press) ), a fingerprint collection generally requires the user to press 5-6 times, and for a sensor with a smaller sensing area, more pressing operations are required. For example, the user may need to press up to 20 times to obtain a complete fingerprint. fingerprint information
[0004] It can be seen that the following problems exist in the existing fingerprint collection scheme based on the pressing method: the required number of user entries is large, especially for sensors with a small fingerprint sensing area, and when the number of user entry operations is small, it is easy to appear. The problem of low recognition rate

Method used

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  • Fingerprint acquisition method, fingerprint acquisition device and electronic device
  • Fingerprint acquisition method, fingerprint acquisition device and electronic device
  • Fingerprint acquisition method, fingerprint acquisition device and electronic device

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Embodiment 1 of the present invention discloses a fingerprint collection method, which can be applied to electronic devices including fingerprint sensors, such as smartphones, tablet computers, notebook computers, etc., refer to figure 1 , the method may include the following steps:

[0044] S101: Acquire multiple frames of fingerprint images generated when a user's finger slides on the fingerprint sensor.

[0045] The present application provides a fingerprint collection scheme based on a sliding method (sliding fingerprint entry) to solve the problems of low recognition rate and high number of required user entry times in the existing push-type fingerprint collection scheme.

[0046] The fingerprint sensor used in this application to realize fingerprint collection may specifically be a capacitive fingerprint identification sensor. When the user's finger slides within the effective sensing area of ​​the fingerprint sensor, the fingerprint sensor periodically captures ...

Embodiment 2

[0054] This embodiment two continues to supplement the scheme of embodiment one, refer to figure 2 , in this embodiment, the fingerprint collection method may also include the following steps:

[0055] S104: Determine whether the user's fingerprint reaches a preset standard;

[0056] S105: If the preset standard is met, encrypt and store the fingerprint template composed of the user fingerprint features of the user fingerprint, or identify the user fingerprint based on the user fingerprint features;

[0057] S106: If the preset standard is not met, prompt the user to continue to register fingerprints.

[0058] After extracting the feature points of the spliced ​​user fingerprints and realizing the fingerprint collection, this embodiment continues to judge whether the collected user fingerprints are complete and up to standard based on the preset fingerprint standards, specifically, for example, judging the texture clarity of the user fingerprints Whether it reaches the pres...

Embodiment 3

[0062] This embodiment discloses a fingerprint collection device, which corresponds to the fingerprint collection methods disclosed in the above embodiments.

[0063] Corresponding to embodiment one, refer to image 3 , the fingerprint collection device may include an acquisition module 100 , a splicing processing module 200 and a feature point extraction module 300 .

[0064] The acquiring module 100 is configured to acquire multiple frames of fingerprint images generated when the user's finger slides on the fingerprint sensor.

[0065] The acquisition module 100 includes an image capture unit, configured to periodically capture multiple frames of fingerprint images generated when the user's finger slides on the fingerprint sensor based on a set time interval.

[0066] The splicing processing module 200 is configured to perform preset splicing processing on the multiple frames of fingerprint images to obtain user fingerprints.

[0067] The stitching processing module 200 in...

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Abstract

The present invention discloses a fingerprint acquisition method, a fingerprint acquisition device and an electronic device. The fingerprint acquisition method comprises: obtaining multi-frame fingerprint images formed by sliding a user's finger on a fingerprint sensor; performing the preset splicing processing of the multi-frame fingerprint images; and extracting feature points from the user fingerprints obtained by splicing to obtain the user's fingerprint features. The present invention provides a fingerprint acquisition scheme on the basis of a sliding mode (recording fingerprints through sliding), compared with a pressing mode, the sliding mode is able to acquire each frame image having better continuity, and generally, there are provided necessary and appropriate overlapping regions, and island fingerprints are not easy to appear, therefore the problem of invalid recording in the pressing mode is overcome; and multi-frame continuous images may be obtained in one sliding process, and complete and comprehensive fingerprint information may be obtained with no need for repeated recording, therefore the number of times of operating a sensor by a user may be effectively reduced on the premise of supporting a higher recognition rate and the user experience is better.

Description

technical field [0001] The invention belongs to the technical field of fingerprint collection and processing, and in particular relates to a fingerprint collection method, device and electronic equipment. Background technique [0002] Fingerprint identification technology is currently the most widely used biometric identification technology. This technology realizes fingerprint identification based on various feature points such as end points, bifurcation points, bifurcation points, isolated points, ring points, and short lines contained in fingerprints. At present, some electronic devices such as high-end mobile phones and tablet computers have integrated fingerprint recognition functions. [0003] Fingerprint identification technology includes two stages: fingerprint acquisition (referring to acquiring fingerprint images and extracting fingerprint features, including the acquisition of fingerprint templates during registration and the acquisition of subsequent fingerprints...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/1335G06V40/1347G06V40/1306
Inventor 牛溢华金锋
Owner DONGGUAN COOLPAD SOFTWARE TECH
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