Multi-neural network cascaded face recognition method based on human face key points

Abstract

The invention discloses a multi-neural network cascaded face recognition method based on human face key points. The multi-neural network cascaded face recognition method comprises the steps of: detecting a face image by adopting an MTCNN algorithm, and then utilizing affine transformation to rotate, translate and zoom a human face for subsequent processing; and utilizing a convolutional neural network for detecting human face contour key points and human face internal key points respectively, and performing feature dimensionality reduction by adopting a PCA algorithm. When performing dimensionality reduction, methods based on a category pattern can be adopted according to different categories, the problems that the traditional PCA algorithm cannot effectively utilize category information between categories and the robustness is poor in the presence of illumination and facial expression changes can be overcame, and finally, the BP neural network is used for recognition. Since advanced or improved methods are used in many links, good effect can be obtained when face recognition is performed.

Description

Technical field [0001] The invention belongs to the technical field of face recognition, and more specifically, relates to a method for cascading multiple neural networks based on key points of the face to recognize faces. Background technique [0002] Face recognition is a kind of biometric recognition technology based on human facial feature information. A series of related technologies that use a camera or camera to collect images or video streams containing human faces, and automatically detect and track human faces in the images, and then perform facial recognition on the detected faces, usually also called face recognition and facial recognition . [0003] Modern research on face recognition began in the late 1960s. In the past 20 years, with the improvement of computer performance and the continuous development of algorithms, face recognition has made a major breakthrough and has truly entered the stage of automatic recognition. Nowadays, face recognition has been widely ...

AI Technical Summary

Problems solved by technology

When the light is too bright or too dark, the picture is blurred, etc., the traditional recognition method cannot accurately detect the face

[0012] (2) Extremely sensitive to face occlusion

In many occasions, it is inevitable that the face is occluded, and the application of traditional methods in this situation is very limited.

[0013] (3) Due to the limitations of algorithms and computer performance, there is no ability to train large-scale face datasets, and the calculation time is too long, making it difficult to achieve real-time processing

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