By simulating real 3D geographic information, the electronic projection sand table generates a miniature model, and uses advanced control technology to dynamically search the geographic information of each point in real time. Such as 3D coordinates, height, slope, rivers, roads and various artificial engineering and facilities, long-term planning and other information. The following with the Xiaobian network to understand the characteristics of multimedia 3D electronic projection sand table, technical applications.

The characteristics of multimedia electronic projection sand table

By simulating real 3D geographic information, the electronic projection sand table generates a miniature model, and uses advanced control technology to dynamically search the geographic information of each point in real time. Such as 3D coordinates, height, slope, rivers, roads and various artificial engineering and facilities, long-term planning and other information. And through the advanced 3D simulation function in real time on the computer 3D single point display, path display line, around the point display, engineering facilities query, economic benefit analysis and other kinds of intelligent analysis.

It can also control the synchronous display of sound and video through computer multimedia control technology, which can be controlled by remote control, manual control, induction control, and multimedia control. It can be digital display, single point display, combination display, dynamic display and so on. It has the characteristics of flexible operation, simple, easy to maintain and modify

Technical application of multimedia electronic projection sand table

System characteristics

1、Real simulated terrain. The geographical sand table is precisely made according to the scale, which can display the mountain, river, town, traffic and unit deployment and action plan in image and three-dimensional, not only has the use value, but also has the decorative and appreciation effect.

2、Intelligent dynamic display. The sand table uses different colors of light, through single point, group point, long bright, shining and flow display methods, so that the sand table display has obvious dynamic effect.

3、Multi-function control. The sandtable system adopts computer programming and control to realize the comprehensive use of sound, video and other technologies and means, which can be controlled by mouse, keyboard, remote control or touch sensing control, and can also be controlled by PDA roaming, and various interfaces are open and extensible, easy to modify or increase in the future.

4、Comprehensive presentation. The sand table system uses multimedia and information technology to realize sound, light, electricity, text, image, etc. through the sand table light, sound, plasma (LCD) display, computer screen, projection, alarm and other synchronous comprehensive demonstration.

5、Easy to operate. Through the technology of point selection control, map roaming function, database technology, keyword control, network compatibility and software optimization, it can quickly query and demonstrate users' text, forms, graphics, images and other information about target elements, deployment and action plans, and can be printed and edited in time.

6、Widely used. Geographical sand table system can be used to study terrain, determine deployment, planning, command and dispatch, research programs, exhibition, advertising and so on. Application direction Commercial exhibition, science and technology exhibition, museum and other realistic simulation.

3D electronic projection sand table, also known as 3D digital map, 3D geographic information system. It is a combination of remote sensing, geographic information system, 3D simulation and other high-tech.

Advantages of 3D electronic projection sand table

By integrating remote sensing, geographic information system and 3D simulation technology, the electronic projection sand table has an incomparable advantage over traditional simulated sand table and flat map.

（1）、Accurate topographic information

Using the national standard topographic map to establish the digital ground model, it can accurately restore the geomorphic form in proportion.

（2）、Detailed representation of features

The satellite remote sensing image is used as the surface surface to reflect the same surface shape as the field, and the information of rivers, vegetation, roads and residential places is clear.

（3）、The surface objects are intuitive

The color of satellite remote sensing image, through reasonable combination of band and phase selection, can simulate the field landscape, as if you are there.

（4）、Easy browsing

Zoom and roam freely in the 3D electronic projection sand table, can simulate flight, and carry out all-round observation and analysis of the target;

（5）、Terrain information retrieval

The geographic coordinates and altitude of any place can be queried;

（6）、Terrain analysis and measurement

The distance, area and volume can be calculated on the above, and the analysis of visibility, section and submersion can also be carried out;

（7）、Simulation

It can simulate the fire, explosion, etc. in any position above, and carry out route selection and planning;

（8）、Three-dimensional ground facilities

Show buildings and other infrastructure in 3D;

（9）、Attribute query

All kinds of information can be directly queried on the 3D electronic projection sand table;

（10）、Integrated GPS system

Achieve tracking and scheduling directly on the 3D electronic projection sand table

Interactive projection display system

Ground interactive projection system uses advanced computer vision technology and projection display technology to create a fantasy dynamic interactive experience, the system can produce a variety of special effects under your feet. When you step into the image projected on the ground above, you can directly use your feet or hands to interact with the virtual scene on the ordinary projection screen, and various interactive effects will change accordingly with your footsteps, allowing you to enter a wonderful world of virtual and real fusion.

The ground interactive projection system is the real interaction between the participant and the image projected on the ground, which is composed of three parts: sensor, application server and ground display. The audience of the advertisement is combined with the advertisement content, so that multiple viewers are integrated into the advertising scene, just like everyone participates in the game at the same time, and the physical movements of multiple viewers control the advertising content of the ground projection or wall projection through the non-contact induction equipment, like the computer mouse, and generate interaction. The content of the advertisement changes with the passing or movement of the participants. For example, the projector casts a wave of water on the ground, and visitors walk into it, they can see the "water surface" ripples under their feet, as if walking on a lake; Fish with the footsteps of the activists on the virtual water surface ripples or around or swim together; Flowers bloom on the virtual grass with the footsteps of activists; Turtles are kicked around by the feet of the activists to swim away, but the same kind of simulated football.

The interactive technology used in this system has a leading position in the world. With high novelty and appreciation, it can play a good role in the atmosphere of the exhibition hall, increase the scientific and technological content of the exhibition, and improve the goal of the exhibition site.

System characteristics

（1）Refreshing special effects display, suitable for science and technology museums and various exhibition halls or entrances, to highlight the display atmosphere. Rich special effects types, according to different requirements to produce unique theme effects.

（2）Novel new forms of advertising release: The ground interactive projection system can be used in all public places for a new form of interactive advertising entertainment to attract audiences with novelty and entertainment.

（3）Very interesting and immersive participation mode: novel interaction and high accuracy. The system provides a real-time dynamic combination of participant and ground image displays that change in sync with audience participation.

（4）Convenient, concise and time-efficient: interactive content can be programmed according to the application and customer needs, and it is convenient to update the content; The projected image area can be expanded to any desired size; You can set up different interactive content according to your needs to enhance the effect of entertainment.

（5）The area and shape of the projection area can be arbitrarily changed according to the needs of the display effect and creativity. Easy to install and deploy: Easy to install, disassemble and transport, suitable for both long-term and short-term exhibitions

Environmental requirement

（1）Hoisting projection distance: minimum 3 meters;

（2）Hoisting structure requirements: the weight of the support structure of the projector and sensor is about 20 kg;

（3）Brightness of the projector: above 5000 ANSI lumens;

（4）Projection area: according to customer requirements, generally 4*3 meters, can be spliced;

（5）Ambient brightness: Avoid strong light and high brightness (note: a larger projection area requires a brighter projection system than a small projection area. Bright environments require a higher brightness projection system than dark environments).

Application situation

The multimedia interactive projection system is suitable for science and technology museum, planning museum, museum, industry exhibition hall, theme exhibition hall, enterprise exhibition hall and many other perennial exhibition halls. It is also applicable to the exhibition site, shopping malls, hypermarkets, hotels, bars, discos, KTV, new product launches, promotional activities, stages, wedding ceremonies, as well as office buildings, performance venues, squares and other traditional places that cannot be achieved with multimedia technology.