Face image comparison method and device, compute device and storage medium

A face image and computer program technology, applied in the field of image processing, can solve the problems of time-consuming comparison process, affecting the speed of face image comparison, etc., to achieve the effect of improving accuracy, improving efficiency, and simple and convenient calculation.

Pending Publication Date: 2018-12-11
PING AN TECH (SHENZHEN) CO LTD
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Problems solved by technology

Due to the large number of feature vectors in the database system, the comparison process is very time-consuming, which affects the speed of face image comparison

Method used

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  • Face image comparison method and device, compute device and storage medium
  • Face image comparison method and device, compute device and storage medium
  • Face image comparison method and device, compute device and storage medium

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts all belong to the protection scope of the present invention.

[0028] The face image comparison method provided by this application can be applied in such as figure 1 In the application environment, the client communicates with the server through the network, and the server receives the face images to be compared sent by the client, and then extracts the feature vectors of each face image and the pre-stored in the bottom library of the server The feature vectors of N standard face images, and then compare the ...

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Abstract

The invention discloses a face image comparison method and device, a terminal device and a storage medium. The method comprises the following steps: obtaining a face image to be compared and extracting a feature vector to obtain a feature vector to be compared; normalizing the feature vector to be compared to obtain a comparison normalized vector; obtaining a standard normalized vector, calculating the cosine similarity between the feature vector to be compared and the N standard feature vectors in the base library based on the comparison normalized vector and the standard normalized vector, and obtaining N cosine similarity values; retrieving the maximum cosine similarity value from the N cosine similarity values, and obtaining the comparison result according to the maximum cosine similarity value and the preset similarity threshold. By normalizing the feature vector of the face image in advance, the face image comparison method improves the speed of obtaining the comparison result and the efficiency of the face image comparison.

Description

technical field [0001] The present invention relates to the field of image processing, in particular to a face image comparison method, device, computer equipment and storage medium. Background technique [0002] Face image comparison refers to extracting the features of the face image and comparing them with the features of the face image in the database to judge the identity of the face image, including 1:1 face image comparison and 1:1 face image comparison. N face image comparison. Among them, 1:N face image comparison refers to comparing the feature vector of the input face image with the N feature vectors in the database system, which is used in 1:N face recognition applications that need to use a larger N library. Both can play a role, such as VIP personnel identification systems in banks and airports. Due to the large number of feature vectors in the database system, the comparison process is very time-consuming, which affects the speed of face image comparison. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62
CPCG06V40/168G06F18/22
Inventor 戴磊
Owner PING AN TECH (SHENZHEN) CO LTD
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