Construction and analysis of foreign language online guiding model based on classroom network environment and face recognition

Because network teaching is different from traditional classroom teaching and other forms of teaching, some new theories and methods need to be adopted in network teaching. Network teaching goes beyond the limitation of time, space and region, which makes it difficult to supervise the effectiveness of network teaching. The old method of testing the effectiveness of network teaching only through the stage test and the test after the end of learning can not effectively supervise the effectiveness of network teaching. New methods are needed to supervise the effectiveness of network teaching. At the same time, the maturity of face perception theory, technology and application makes it possible to supervise the effectiveness of online teaching based on face perception. Face perception includes face detection, face feature extraction, face contour detection, face recognition and so on. This paper will combine the relevant theories of educational ecology and online education to study the necessity of carrying out ecological classroom teaching, and explore the construction strategy of ecological classroom of intelligent teaching in online live classroom. In this paper, combined with face recognition verification, online instruction model is used to build online classroom platform.