Air-cross gesture blackboard-writing method suitable for mobile terminal

Abstract

The invention relates to an air-cross gesture blackboard-writing method suitable for a mobile terminal. The method comprises the steps that a simulation blackboard is set to preprocess picture information in a storage database, image samples with palm images are collected, and a cascade classifier based on an Haar characteristic is acquired; after learning is completed, a gesture video is obtained, and gesture cutting is conducted; palm and gravity center poisoning is conducted by using the cascade classifier based on the Haar characteristic, an image corresponding to a current movement tracecurve is obtained, and a code is set for each gesture for storage. According to the air-cross gesture blackboard-writing method suitable for the mobile terminal, by combining with the teaching characteristic of traditional classroom blackboard writing and the currently existing research for a cloud educational platform, aiming at the characteristic of a narrow and small screen of the mobile terminal, by adopting a mobile WEB vector drawing technology, a mobile terminal gesture identification technology and a cooperation parallel control technology, requirements such as cross-platform and man-machine interaction convenience are sufficiently considered, a gesture identification algorithm based on pixels is improved, simulation of traditional blackboard writing through the air-cross gesture is achieved, and the defects of a current remote teaching platform are effectively overcome.

Description

technical field [0001] The present invention relates to the technical field of methods or devices for reading or recognizing printed or written characters or for recognizing graphics, for example, fingerprints, and in particular to an isolation system suitable for mobile terminals that facilitates human-computer interaction and computer distance education. Empty gesture board method. Background technique [0002] In the process of real-time teaching in distance education, due to great changes in the carrier and usage of blackboard writing, teachers will inevitably be troubled by changes in teaching habits. In teaching applications, teachers often need to pause the current behavior (such as narration), which sometimes interrupts the original smooth thinking of teachers, and for the trainees, the original concentration of attention is also diverted . [0003] At this time, gestures, as one of the most natural ways of human interaction, can help teachers easily get used to ne...

AI Technical Summary

Problems solved by technology

[0007] In addition, the human-computer interaction in the distance education mode will have a great impact on the learners' learning experience

The existing stroke gesture recognition on mobile devices is to recognize the strokes drawn by the user on the device screen as some kind of gesture command, but if this stroke gesture mode is directly applied to the mobile terminal, due to the small interface of the mobile terminal It will lead to a very poor user experience, and it will not be able to take advantage of the mobile terminal user experience design at all

The current mainstream of mobile terminal gesture recognition is vision-based gesture recognition technology. Recognizing gestures through mobile phone cameras has the advantages of convenience and wide application. requirements