【 中文摘要 】本发明提供了一种基于视觉识别的沙盘演示系统，其中屏幕垂直设置在实物沙盘的一侧；计算机分别与屏幕、相机和相机标定装置连接；激光笔的入射端指向实物沙盘；相机标定装置用于对相机进行标定；相机用于对实物沙盘进行拍摄，得到实物沙盘的帧数据；计算机用对帧数据进行预处理，得到预处理数据，并根据预处理数据进行光斑检测和手势判断，得到手势及坐标信息；屏幕用于根据手势及坐标信息进行相应的响应，以实现实时演示的联动。本发明结合了视觉识别技术，实时识别激光笔指向，能够将激光笔用作定位和手势控制，实现更加灵活的实时联动效果，达到传统的方法无法完成的演示效果，实现更加沉浸式的体验。

【 英文摘要 】The present invention provides a sand table demonstration system based on visual recognition, wherein a screen is vertically disposed at one side of a physical sand table; The computer is connected with the screen, the camera and the camera calibration device respectively; The incident end of the laser pen points to the physical sand table; The camera calibration device is used for calibrating the camera; The camera is configured to shoot the physical sand table to obtain frame data of the physical sand table; The computer preprocesses the frame data to obtain preprocessed data, and performs light spot detection and gesture judgment according to the preprocessed data to obtain gesture and coordinate information; The screen is used for performing corresponding response according to gesture and coordinate information so as to realize linkage of real-time demonstration. According to the invention, a visual recognition technology is combined, the laser pen pointing is recognized in real time, the laser pen can be used for positioning and gesture control, a more flexible real-time linkage effect is realized, a demonstration effect which cannot be completed by a traditional method is achieved, and a more immersive experience is realized.

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