CN-122024339-A - Multi-mode biological characteristic acquisition method and integrated machine

CN122024339ACN 122024339 ACN122024339 ACN 122024339ACN-122024339-A

Abstract

The application discloses a multi-mode biological feature acquisition method and an integrated machine, the method comprises the steps of guiding a user to conduct face pre-positioning through a face positioning frame displayed by a main display screen and face positioning prompt information displayed by an auxiliary display screen, controlling the main display screen to display an iris positioning ring and a virtual glasses frame, guiding the user to coincide the virtual glasses frame with the iris positioning ring through a movable head through the auxiliary display screen, respectively monitoring face images and iris images of the user through a telescope type iris acquisition module and a wide-angle face acquisition camera, evaluating quality scores of the images, and capturing the face images and the iris images of the user at the same moment under the condition that the quality scores of the face images and the iris images which are initially acquired are larger than corresponding thresholds. The method can realize seamless integration of the multi-mode biological characteristic acquisition flow of the user, high self-help of the acquisition process and real-time controllability of the acquisition quality.

Inventors

LI RONG
LI QIWEI
WANG ZILONG
WU DONG
DAI WANBO
TONG LU
HAN YANG
SHAO TIANTIAN
CHEN WEI

Assignees

煤炭科学技术研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20251223

Claims (10)

1. The multi-mode biological characteristic acquisition method is characterized by comprising the following steps of: guiding a user to perform face preset positioning through a face positioning frame displayed by a main display screen and face positioning prompt information displayed by a secondary display screen; After detecting that the face image of the user is positioned in the range of the face positioning frame, controlling the main display screen to display an iris positioning ring and a virtual glasses frame linked with the facial gesture of the user, displaying iris positioning prompt information through the auxiliary display screen, and guiding the user to coincide the virtual glasses frame with the iris positioning ring through moving the head so as to enable eyes of the user to be positioned at an iris acquisition target position; the method comprises the steps of respectively monitoring an initial face image and an initial iris image of a user through a telescope type iris acquisition module and a wide-angle face acquisition camera, and evaluating quality scores of the initial face image and the initial iris image; And capturing the face image and the iris image of the user at the same moment under the condition that the quality scores of the initial face image and the initial iris image are larger than the corresponding threshold values.
2. The method of claim 1, wherein the face positioning prompt displayed by the main display screen and the face positioning frame displayed by the auxiliary display screen guides the user to perform the face positioning, comprising Displaying prompt information guiding a user to be over against the main display screen on the auxiliary display screen; the wide-angle face acquisition camera is used for monitoring face information of a user in real time, and the distance sensor is used for detecting the real-time distance between the user and the main display screen; And under the condition that the real-time distance is greater than a distance threshold value, guiding a user to adjust the position through the position adjustment prompt information displayed by the auxiliary display screen until the face image of the user is positioned in the range of the face positioning frame.
3. The method of claim 1, wherein the controlling the primary display to display an iris positioning collar and a virtual eyeglass frame in linkage with a facial pose of a user comprises: Displaying the iris positioning ring at the central position of the main display screen, and displaying the virtual glasses frame corresponding to the current facial gesture of the user on the main display screen based on the face key point detection technology; The iris positioning prompt information is displayed through the auxiliary display screen, and the method comprises the following steps: And displaying prompt information for guiding the user to move the head so as to align the eyes to the iris positioning ring on the auxiliary display screen, wherein the physical ray axis of the telescope type iris acquisition module corresponds to the positions of the eyes of the user at the iris acquisition target position.
4. The method of claim 1, wherein said evaluating the quality scores of the initial face image and initial iris image comprises: analyzing the definition of the initial iris image, judging whether a shielding object exists in the initial iris image, and calculating the central offset of the pupil; calculating the quality fraction of the initial iris image according to the definition, the shielding condition of the shielding object and the pupil center offset; and calculating the quality score of the initial face image according to the angle information, illumination information and five sense organs state information of the face in the initial face image.
5. The method of claim 4, further comprising, after said evaluating the quality scores of the initial face image and initial iris image: displaying guide prompt information aiming at the failed evaluation image on the auxiliary display screen again under the condition that the quality score of the initial face image or the initial iris image fails to pass the evaluation; and according to the updated face image and iris image, performing quality evaluation and self-adaptive adjustment in a circulating way.
6. The system of claim 1, further comprising, after said capturing of the face image and the iris image of the user at the same time, the steps of: packaging the captured face image and iris image with identity information, fingerprint information and high-definition photo data of a user acquired by external equipment; The packaged data is printed by a thermal printer to output a service voucher.
7. A multi-mode biological feature acquisition all-in-one machine is characterized by comprising a shell, a main display screen, an auxiliary display screen, a telescope type iris acquisition module, a wide-angle face acquisition camera and a control unit, wherein the main display screen, the auxiliary display screen, the telescope type iris acquisition module, the wide-angle face acquisition camera and the control unit are arranged in the shell, The main display screen is used for displaying animation images required by face positioning and iris positioning; the auxiliary display screen is used for displaying prompt information required by guiding a user to perform face positioning and iris positioning; The telescope type iris acquisition module is used for acquiring face images of users; The wide-angle face acquisition camera is used for acquiring iris images of a user; The control unit is respectively in communication connection with each module in the shell, and is used for carrying out cooperative control on each module so as to realize the multi-mode biological characteristic acquisition method as claimed in claim 1.
8. The all-in-one machine of claim 7, further comprising: and the distance sensor is used for detecting the real-time distance between the user and the main display screen.
9. The all-in-one machine of claim 7, further comprising: the identity card reader is used for collecting identity information; The fingerprint acquisition instrument is used for acquiring fingerprint information of a user; the high-definition photo taking instrument is used for collecting high-definition photo data of related articles carried by a user; the thermal printer is used for printing various data acquired by the multi-mode biological characteristic acquisition all-in-one machine and outputting service certificates.
10. A computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the multi-modal biometric acquisition method of any one of claims 1-6.

Description

Multi-mode biological characteristic acquisition method and integrated machine Technical Field The application relates to the technical field of biological feature recognition, in particular to a multi-mode biological feature acquisition method and an integrated machine. Background At present, in the fields of security protection, identity authentication and the like, the combined acquisition of multi-mode biological characteristics (such as iris and face) has become an important means for improving the accuracy and safety of identification. By fusing multiple biological characteristics, the defects of single biological characteristic identification in the aspects of stability, safety and the like can be effectively overcome, and the application requirements of high-safety-level scenes are met. However, in the related art, a multi-modal biometric feature is generally acquired by individually acquiring a biometric feature in each data acquisition process, and the multi-modal biometric feature is acquired by dividing the multi-modal biometric feature into a plurality of acquisition processes. The collection mode in the related art causes the rupture of the collection flow, the collection efficiency is low, the collection process is required to rely on manual guidance, and the quality of the collected data is poor. Disclosure of Invention The object of the present application is to solve at least to some extent one of the above-mentioned technical problems. Therefore, a first object of the present application is to provide a multi-mode biometric feature collection method, which can realize seamless integration of a multi-mode biometric feature collection process of a user, high self-help of a collection process, and real-time controllability of collection quality, and solve the problems of splitting, relying on manpower, uncontrollable quality, and the like of the multi-mode biometric feature collection process. The second object of the present application is to provide a multi-modal biometric acquisition all-in-one machine. A third object of the present application is to propose a computer readable storage medium. To achieve the above objective, an embodiment of a first aspect of the present application provides a multi-modal biometric feature acquisition method, including the steps of: guiding a user to perform face preset positioning through a face positioning frame displayed by a main display screen and face positioning prompt information displayed by a secondary display screen; After detecting that the face image of the user is positioned in the range of the face positioning frame, controlling the main display screen to display an iris positioning ring and a virtual glasses frame linked with the facial gesture of the user, displaying iris positioning prompt information through the auxiliary display screen, and guiding the user to coincide the virtual glasses frame with the iris positioning ring through moving the head so as to enable eyes of the user to be positioned at an iris acquisition target position; the method comprises the steps of respectively monitoring an initial face image and an initial iris image of a user through a telescope type iris acquisition module and a wide-angle face acquisition camera, and evaluating quality scores of the initial face image and the initial iris image; And capturing the face image and the iris image of the user at the same moment under the condition that the quality scores of the initial face image and the initial iris image are larger than the corresponding threshold values. In addition, the multi-mode biological feature acquisition method of the embodiment of the application has the following additional technical features: Optionally, in some embodiments, the face positioning prompt information displayed by the main display screen and the face positioning prompt information displayed by the auxiliary display screen guides the user to perform face positioning, including displaying prompt information on the auxiliary display screen, which guides the user to face the main display screen, collecting the face information of the user in real time through the wide-angle face acquisition camera, detecting a real-time distance between the user and the main display screen through the distance sensor, and guiding the user to adjust the position through the position adjustment prompt information displayed by the auxiliary display screen when the real-time distance is greater than a distance threshold value until the face image of the user is located within the range of the face positioning frame. Optionally, in some embodiments, the controlling the main display screen to display an iris positioning ring and a virtual glasses frame linked with the facial gesture of the user includes displaying the iris positioning ring at a central position of the main display screen and displaying the virtual glasses frame corresponding to the current facial gesture of the user on the main di