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Under-screen fingerprint image generation method and device

A fingerprint image and image technology, applied in the field of image processing, can solve the problem of insufficient training samples of fingerprint images under the screen, and achieve the effect of alleviating the insufficient number

Pending Publication Date: 2021-01-05
XIAMEN UNIV
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AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method that can generate off-screen fingerprint images by using a large number of existing non-screen fingerprint images, and solve the problem of insufficient training samples of off-screen fingerprint images in the algorithm training process of fingerprint recognition devices based on neural networks. Method and device for generating fingerprint image under screen

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  • Under-screen fingerprint image generation method and device
  • Under-screen fingerprint image generation method and device

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Embodiment Construction

[0032] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and fully incorporate the concepts of example embodiments communicated to those skilled in the art.

[0033] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the invention. However, those skilled in the art will appreciate that the technical solutions of the present invention may be practiced without one or more of the specific details, or other methods, components, means, steps, etc. may be employed. In other instance...

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Abstract

The invention discloses an under-screen fingerprint image generation method and device, and relates to the technical field of image processing. The generation method comprises the following steps: training a generative adversarial neural network for mutual style conversion between a non-under-screen fingerprint image and an under-screen fingerprint image; and performing image conversion by using the trained generative adversarial neural network, and converting the input non-under-screen fingerprint image into a generated under-screen fingerprint image. The generation device is sequentially provided with an acquisition unit, a conversion unit and an output unit; the acquisition unit is used for acquiring the non-under-screen fingerprint image; the output end of the acquisition unit is connected with the conversion unit, and the conversion unit is used for converting the acquired under-screen fingerprint image into the generated under-screen fingerprint image; and the output end of the conversion unit is connected with the output unit, and the output unit is used for outputting the generated under-screen fingerprint image. According to the method, a large number of existing non-under-screen fingerprint images are used for generating the under-screen fingerprint images, and the problems that in the fingerprint recognition field, the number of existing under-screen fingerprint image samples is insufficient, collection is difficult, and privacy is leaked are solved.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an off-screen fingerprint image generation method and generation device. Background technique [0002] At present, fingerprint collection methods include optical, ultrasonic, and capacitive collection. In recent years, due to the development of full-screen smartphones, under-screen fingerprint sensors have begun to be used. The under-screen fingerprint sensor is also based on an optical fingerprint biometric information collection sensor. However, since the imaging process of the under-display fingerprint sensor is different from that of the non-display fingerprint sensor, the image quality and image characteristics of the under-display fingerprint image collected by the under-display fingerprint sensor and the non-display fingerprint image collected by the non-display fingerprint sensor are different. different. Since the under-screen fingerprint sensor is no...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06N3/04G06N3/08
CPCG06N3/08G06V40/1347G06N3/045
Inventor 周剑扬庄铭泳吴晓芳黄敏君
Owner XIAMEN UNIV
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