3D projection sand table, also called electronic sand table, 3D sand table, holographic projection sand table and interactive projection sand table system, is a technical means to project sand table images into applications through advanced computer digital simulation technology. Digital sand table abandons the disadvantages of traditional sand table making technology, such as long time-consuming and large area. It has more creative design space, integrates multimedia display and interactive functions, and can use sound, light, electricity, digital simulation, three-dimensional animation and computer. Using high-precision projection technology, the simulation ability of the picture can reach the first-class level, and the highly simulated picture also has vivid interactive function, which combines visual experience with somatosensory feedback. At the same time, the experiencer can also interact with the three-dimensional image model on the big screen through gestures, and can browse and query at multiple levels to quickly obtain vivid and beautiful dynamic information. Interactive projection sand table is more attractive and has a better experience.

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