Face recognition method based on a mutual exclusion regularization technology

A technology of face recognition and technology, applied in the field of image processing, can solve the problem of compactness without considering the separability of different types of features, and achieve the effect of improving recognition accuracy, good practical effect, and high flexibility

Active Publication Date: 2019-06-11
NANKAI UNIV
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing face recognition models and methods only consider the compactness between the same type of features under the face classification problem without considerin...

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  • Face recognition method based on a mutual exclusion regularization technology
  • Face recognition method based on a mutual exclusion regularization technology
  • Face recognition method based on a mutual exclusion regularization technology

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing and specific embodiment, the present invention will be described in further detail:

[0018] refer to figure 1 , represents the flow chart of the face recognition method based on mutual exclusion regularization technology, and the steps of the method shown in the figure are:

[0019] a. Import training images: For the data in the existing face recognition data set, perform the preprocessing operation of face alignment, first detect the face target, and cut the image according to the target area to ensure that the face image is under the size of 112×96 , and then import the processed face image data I into the RegularFace network model.

[0020] b. Identity feature extraction: The face image I imported in step a is extracted from the image through the identity feature extraction module composed of residual network, and the feature vector x representing the image is obtained:

[0021] x=G θ (I)

[0022] Among them, G θ (...

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Abstract

The invention discloses a face recognition method based on a mutual exclusion regularization technology, and belongs to the technical field of image processing, and the method comprises the steps: firstly importing a screened and calibrated face image data set into a model; Performing feature extraction on the input image data by using a residual neural network to obtain a feature vector; calculating a classification probability by using the feature vector and the classification parameter matrix to obtain an identification vector; using an A-Softmax loss function calculates a loss difference between the identification vector and the label and using the loss difference as a gradient to carry out back propagation so as to update parameters in the feature extraction network; calculating a partial derivative of the mutually exclusive regularization term with respect to the classification parameter matrix and updating the classification parameter matrix using the partial derivative; considering The intra-class compactness and the inter-class separability at the same time, the method has more practical significance for application of a face recognition model in an open environment, denseclustering of intra-class data and discrete distribution of inter-class data under a face recognition task can be achieved at the same time through the method, and the method is more practical and universal compared with an existing method.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a face recognition method based on mutual exclusion regularization technology. Background technique [0002] Face recognition is one of the most widely studied topics in computer vision. Recently, Convolutional Neural Networks (CNN) have become the workhorse method in the field of artificial intelligence research and have achieved remarkable progress. Generally, there are two test environments for face recognition in face recognition: open and closed. In an open test environment, the identity category to which the test picture belongs may not exist in the training set data. In a closed test environment, there are corresponding identity categories in both the training dataset and the testing dataset. Because it is impossible to collect all possible identity faces for training, face recognition in the open environment is more challenging and closer to real-wo...

Claims

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Application Information

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IPC IPC(8): G06K9/00
Inventor 程明明赵凯
Owner NANKAI UNIV
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