Face recognition method and recognition device based on on-site photos and ID photos

Abstract

The invention discloses a face recognition method and recognition device based on on-site photos and certificate photos. The method includes: establishing training data; preprocessing the training data; using DCNN to converge the preprocessed data corresponding to the first data set training to obtain the first network parameter model; performing convergence training on the parameters of the first network parameter model using the preprocessed data corresponding to the second data set to obtain the second network parameter model; using the second network parameter model to correspond to the second data set The features of the preprocessed data are extracted, the features of multiple patches corresponding to the same image data are connected together as input, and the feature vector of the preset dimension is output, and the error function based on metric learning is used for training to obtain the third network parameters model; in the third network parameter model, the preprocessed data corresponding to the on-site photo and the ID photo are input to obtain the first and second eigenvectors, and the similarity between the ID photo and the on-site photo is judged according to the distance between them.

Description

technical field [0001] The invention relates to the field of biometric identification, in particular to a face recognition method and recognition device based on on-site photos and ID photos. Background technique [0002] Due to the convenience of the face, face recognition technology has become a hot spot in surveillance, security, finance, social security and other fields. With the help of feature learning of deep learning in recent years, face recognition technology has made great progress, and now many factors such as different lighting, posture, and expression are relatively robust. However, there are still many problems in comparing ID card chip photos with on-site photos. Due to the large compression ratio and low resolution of the ID card chip photo, the image size is generally only 102 wide * 126 high, and the interpupillary distance is less than 30 pixels. At the same time, the ID card chip photo is likely to be quite different from the on-site photo due to the a...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a face recognition method and recognition device based on on-site photos and ID photos to solve the problem of the existing face recognition using ID photos as templates due to the large compression ratio and low resolution of the evidence photos, which are not compatible with the scene There are technical problems that the recognition performance needs to be improved due to the large difference in the photos.

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