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Biological characteristic multi-modal fusion identification method and device, storage medium and equipment

A technology of biometrics and fusion recognition, applied in the field of biometrics, can solve problems such as uncertainty, difficulty in adjusting the threshold value increase and decrease, poor security and reliability of biometric identification, etc., to achieve Effect of increasing probability, improving safety and reliability

Pending Publication Date: 2022-04-12
BEIJING TECHSHINO TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] That is to say, the existing technology adjusts the comparison threshold of the subsequent biological feature comparison according to the comparison result of the former biological feature. Although this method makes the latter biological feature comparison easier and can improve the comparison pass rate, However, the method of determining the comparison threshold of the latter biometric through the comparison result of the former biometric feature is uncertain, and it is difficult to grasp the magnitude of the increase and decrease of the comparison threshold, which leads to the security of biometric identification. and poor reliability

Method used

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  • Biological characteristic multi-modal fusion identification method and device, storage medium and equipment
  • Biological characteristic multi-modal fusion identification method and device, storage medium and equipment
  • Biological characteristic multi-modal fusion identification method and device, storage medium and equipment

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Embodiment 1

[0089] The embodiment of the present invention provides a biometric multimodal fusion recognition method, such as figure 1 As shown, the method includes:

[0090] S100: Identify the biometric images of each modality in sequence.

[0091] This step is used to acquire biometric images of multiple modalities, and to identify the biometric images of each modality sequentially in chronological order, that is, multi-modal identification.

[0092] S110: When the comparison score of the current modality is not less than the lowest threshold of the current modality, adjust the comparison threshold of the latter modality according to the quality score of the biometric image of the latter modality.

[0093]The minimum threshold of a certain modality is lower than the threshold score set when the modality is normally recognized and passed. For example, under normal circumstances, it is considered that the recognition is passed if the score is greater than or equal to 70 points. In this e...

Embodiment 2

[0146] An embodiment of the present invention provides a biometric multi-modal fusion recognition device, which includes:

[0147] The multimodal recognition module 100 is configured to sequentially recognize biometric images of each modality.

[0148] The comparison threshold adjustment module 110 is configured to adjust the comparison threshold of the latter modality according to the quality score of the biometric image of the latter modality when the comparison score of the current modality is not less than the lowest threshold of the current modality.

[0149] The first judging module 120 is used for when the comparison score of the latter modality is not less than the minimum threshold of the latter modality and the adjusted comparison threshold of the latter modality, and the quality of the biometric image of the latter modality When the score is not less than the decision threshold of the latter mode, it is judged that the identification is passed or the identification ...

Embodiment 3

[0181] The method described in the above-mentioned embodiment 1 provided in this specification can implement business logic through a computer program and record it on a storage medium, and the storage medium can be read and executed by a computer to achieve the effect of the solution described in embodiment 1 of this specification. Therefore, the present invention also provides a computer-readable storage medium for biometric multi-modal fusion recognition, including a memory for storing processor-executable instructions. When the instructions are executed by the processor, the biometric multimodal The steps of state fusion identification method.

[0182] The present invention first dynamically adjusts the comparison threshold according to the quality score of the biometric image, and also uses the quality score of the biometric image to assist decision-making on the recognition result, and at the same time combines the comparison score fusion to gradually increase the probabi...

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Abstract

The invention discloses a biological feature multi-modal fusion recognition method and device, a storage medium and equipment, and belongs to the field of biological recognition. Adjusting a comparison threshold value of the latter modal according to the quality score of the biological characteristic image of the latter modal in the multi-modal identification; when the comparison score of the latter mode is not smaller than the adjusted comparison threshold value of the latter mode and the quality score of the biological feature image of the latter mode is not smaller than the decision threshold value of the latter mode, judging that the recognition is passed or performing the recognition of the subsequent modes; otherwise, fusing the comparison scores of all the identified modals to obtain a fused score; and according to the fusion score, judging whether the identification is passed or carrying out subsequent modal identification. According to the method, the comparison threshold value is dynamically adjusted according to the quality score of the biological feature image, auxiliary decision making is carried out on the recognition result through the quality score of the biological feature image, meanwhile, the probability of identity authentication is gradually increased in combination with comparison score fusion, and the safety and reliability of biological identity recognition are improved.

Description

technical field [0001] The present invention relates to the field of biological identification, in particular to a biological feature multimodal fusion identification method, device, storage medium and equipment. Background technique [0002] Biometric technology is closely combined with high-tech means such as computer, optics, acoustics, biosensors and biostatistics principles, and uses the inherent physiological characteristics of the human body such as fingerprints, faces, irises, and finger veins to identify personal identities. [0003] With the increasing requirements for the accuracy and reliability of social security and identity identification, the limitations of single biometric identification in terms of accuracy and reliability have become increasingly prominent, and it is far from meeting the needs of product and technology development. Currently, multimodal biometric identification is considered to be a research direction with the most potential and advantages...

Claims

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Application Information

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IPC IPC(8): G06V40/10G06K9/62G06V10/774G06V10/80
CPCG06V40/10G06V10/774G06V10/80
Inventor 孙飞杨春林郭秀花江武明周军
Owner BEIJING TECHSHINO TECH
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