Extraction and Classification of Mouth Shape Features in Oral English Teaching Based on Image Processing

Abstract

Mouth shape identification helps oral English learners discover the features of their lip movements in English speaking, and correct their pronunciation more smoothly. So far, few scholars have applied image processing to identify mouth shape features of oral English learners. Most studies consider little about environmental factors, and ignore the changing mouth shape in pronunciation. Therefore, this paper explores the extraction and classification of mouth shape features in oral English teaching based on image processing. Firstly, an extraction and classification model were established for mouth shape features in oral English teaching. Then, the mouth shape images of oral English teaching were preprocessed. After that, the authors segmented the lips in oral English video frames based on neural network, extracted the lip boundaries from the said frames, and fitted them into curves. The proposed model was proved effective through experiments.

Evaluation of the Information-based Teaching Design Abilities of Educators in Blended Teaching

“…With the arrival of the information age, modern information technologies have seen unprecedented development, and its deep integration with teaching has also prompted the update of education models and the extended application of educational informatization [1][2][3][4][5][6][7]. The deep integration of information technology and teaching is not simply to use information technologies throughout the teaching process, but also to actively integrate these technologies with the curriculum system, teaching objectives, and teaching content at a deep level [8][9][10][11][12][13]. To achieve this purpose, teachers are required to design the learning environment related to the teaching content based on the information technologies available, to effectively enhance students' learning interest and achieve better teaching effects [14][15][16].…”

Selection and Utilization of Multiple Teaching Tools in Blended Classrooms from the Perspective of Synergistic Effect

“…Properly selected teaching tools can exhibit the teaching content more intuitively, assist students in understanding the teaching content more profoundly, enrich students' perceptual experience, help forming clearer concepts in students, thereby increasing students' learning interest and enhancing their observation and thinking abilities [1][2][3][4]. In this post-epidemic era, the informatization of education has broken the existing conventional teaching mode in China, in this transformation process, the digitized teaching resources, multiple teaching tools, and blended style classrooms are the keys for teachers to design, select, and use the right tools in the class to achieve the desired teaching effect [5][6][7][8][9][10][11][12][13][14]. Modern science has injected new vitality to education in multiple ways and the increasingly diversified teaching tools is one of the manifestations.…”