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Face-image comparison method, device, computer 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 and affecting the speed of face image comparison, so as to improve accuracy, increase calculation speed, and simplify the data calculation process Effect

Pending Publication Date: 2019-01-15
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, device, computer device and storage medium
  • Face-image comparison method, device, computer device and storage medium
  • Face-image comparison method, device, computer 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 of , wherein, the client communicates with the server through the network, the server receives the face images to be compared sent by the client, and then extracts the feature vectors to be compared of each face image to be compared and pre-stored in The base library matrix on the server side is normalized to the fe...

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Abstract

The invention discloses a face image comparison method, a device, a terminal device and a storage medium. The method comprises the following steps: obtaining a face image to be compared and extractinga feature vector to obtain a feature vector to be compared; the feature vector to be compared is normalized to obtain a comparison normalized vector; obtaining a base library matrix, calculating thecosine similarity between the feature vectors to be compared and the N standard feature vectors of the base library by a parallel calculation method based on the comparison normalized vector and the base library matrix, and obtaining N cosine similarity values; the maximum cosine similarity value is retrieved from the N cosine similarity values, and the comparison result is obtained according to the maximum cosine similarity value and the preset similarity threshold. The face image comparison method calculates the similarity of the face images by using a matrix operation library and a parallelcalculation mode, thereby speeding up the running speed of the computer and improving 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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IPC IPC(8): G06K9/00
CPCG06V40/172G06V40/168
Inventor 戴磊
Owner PING AN TECH (SHENZHEN) CO LTD
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