Face alignment method and device

Abstract

The invention provides a face alignment method and device. The face alignment method and device are used for relieving the problems that during face alignment, the calculated amount is large, the requirement on hardware is high, and faces are hardly transplanted to mobile equipment. The method includes the steps that multiple face alignment models with different deflection angles are established;when the face alignment models with different deflection angles carry out prediction of T stages on a to-be-detected face image, the confidence coefficient of prediction shape, predicted on the current prediction stage by the face alignment models with different deflection angles, of the to-be-detected face image is determined, wherein T is a positive integer; the face alignment models with the confidence coefficients smaller than a preset threshold value are removed, and the remaining face alignment models continue to be used for carrying out next-stage prediction on the to-be-detected face image; according to the prediction shape, predicted in the Tth stage by the remaining face alignment models in the (T-1) stage, of the to-be-detected face image, the final prediction shape of the to-be-detected face image is determined.

Description

technical field [0001] The present application relates to the field of image processing and face recognition, in particular to a face alignment method and device. Background technique [0002] Face recognition is currently a popular technology in the field of computer vision and pattern recognition, and it has a wide range of applications in various occasions. Face alignment refers to obtaining the position information of key parts of the face such as eyes, eyebrows, and mouth in the form of coordinate points through algorithms. [0003] In the actual operation process, the face image to be detected is not always facing the camera. In many cases, the eyes and other parts will be blocked due to the side faces at different angles, resulting in unsatisfactory face alignment. [0004] When performing face alignment in the prior art, since the real face deflection is not known, it is usually necessary to establish multiple models with different angles, so the detection results o...

AI Technical Summary

Problems solved by technology

[0005] This application provides a method and device for face alignment, which are used to improve the problems of large amount of calculation, high hardware requirements, and difficulty in porting to mobile devices when face alignment is performed.

Images