Non-contact electronic whiteboard system and detection method based on image detection

Abstract

The invention discloses a non-contact electronic whiteboard system and a detection method based on image detection. The system comprises an operator console, two image intake devices, a video acquisition processor, a computer and a large display screen, wherein the center optical axes of two image intake devices are opposite and downwards installed on the operator console; a visual angle is adjusted to cover the operator console; the video acquisition processor acquires and detects the video images of two image intake devices; a finger tip position and control information are sent to the computer via the communication interface; and the content of the computer is displayed on the large display screen. Compared with the interactive whiteboard in the prior art, the system and the detection method solve the problem of oversized screen display and operation. Meanwhile, the non-contact method is adopted to achieve a better effect on expanding the practical operation range and solving the problems of cleanness and finger friction for more people to use for a long term, thereby widening the application range of the interactive whiteboard.

Description

technical field [0001] The invention relates to the field of electronic whiteboards, in particular to a non-contact electronic whiteboard system and detection method based on image detection. Background technique [0002] Since the electronic whiteboard can be well combined with the computer and the projection system, it is easy to store the content written on the whiteboard in the computer, and at the same time, it is also very convenient to edit and annotate the computer content projected on the electronic whiteboard, so , Electronic whiteboard systems are widely used in interactive teaching, office meetings and product releases and other occasions. [0003] However, the existing electronic whiteboards can usually be divided into active contact type and passive contact type. The active contact type system needs special devices to touch the electronic whiteboard, and commonly used is a special electronic whiteboard marker; the passive contact type system does not require sp...

AI Technical Summary

Problems solved by technology

[0007] The disadvantage of the first solution is that it needs to be completed by touching the electronic whiteboard with the help of a luminescent pen; the second solution does not require a signal pen, but it also needs to be completed by touching the whiteboard with hands or objects

It can be seen that the two solutions both use the usual whiteboard or projection wall as the contact surface. On the one hand, the operation area of ​​the whiteboard can only be limited to the range that the user can touch, resulting in the super-large screen display and effective writing. Combination has been impossible to achieve; on the other hand, because the operator must touch the whiteboard surface with fingers, it cannot be used for a long time no matter from the perspective of hygiene or finger friction

When displaying on a large screen, if the entire display screen is used as a writing surface, the size of the electronic board is required to be large, the cost is high, and the operation is also very inconvenient; that is to say, due to the limitation of the size of the writing board, it is difficult It is used in large conference halls, lecture halls, large classrooms and product launches where large screen display is required

Images