Interactive projection system is an interactive advertising and entertainment system integrating the highest technology in the world today. Interactive audio-visual system provides an unusual and exciting advertising and entertainment effect system, which is suitable for all public indoor places, especially leisure, shopping, entertainment and education places.
Major changes in the field of advertising
Interactive projection system can provide all kinds of information, including all kinds of pictures and patterns that people think or need, and it is a new advertising form expressed in its unique way. At the same time, it also broke the traditional hanging mode of traditional static advertisements without entertainment. The emergence of interactive audio-visual system represents a new modern advertising model, which can attract everyone to stop and watch the interaction and has good publicity effect.
New highlights of consumer places
The fantastic visual effect and wonderful action of the interactive projection system will attract all customers, on-site audience and even passers-by to stop and watch interactively, and let all customers and audience participate in it through the changes of interactive pictures and sounds, thus enhancing the inherent attraction of entertainment and promoting consumption and re-consumption, especially suitable for discos, hotels, KTV, bars and other leisure and entertainment places.
Application target
Science and technology museum, planning museum, museum, industry exhibition hall, theme exhibition hall, enterprise exhibition hall and many other perennial exhibition halls/exhibition halls/shopping malls/hypermarkets/hotels/bars/discos /KTV/ new product launches, promotional activities/weddings/office buildings/performance venues/squares and other places where traditional multimedia technology cannot be realized.
Typical examples of interactive projection media applications;
Interactive projection system adopts mixed virtual reality technology and motion capture technology, which is the further development of virtual reality technology. Virtual reality is a technology that generates three-dimensional images by computer, providing users with a three-dimensional space and interacting with it. Through mixed reality, users can touch the real environment while manipulating virtual images, thus enhancing their senses.
Advantages of system application:
1, attractive and novel interactive effects will inevitably attract and guide people to visit, and good design and artistic effects will also add interactive atmosphere to the museum.
2, guide the direction, can be used as a functional type, such as intelligent museum guidance and inquiry, which is more humanized than the traditional signboard inquiry screen in the past.
3. Non-contact communication is more humanized, and at the same time, bacterial infection caused by human contact is reduced.
4. Economic benefits. New media art can be made into the form of real-time interactive advertising, which allows visitors to interact with the propaganda content, increase the visibility of the museum and deepen the impression of tourists on the museum. Museum publicity and entertainment are carried out at the same time, killing two birds with one stone.
The platform forms of interactive projection system include
Ground interactive projection display platform, elevation interactive projection display platform, spherical interactive display platform, desktop interactive display platform.
Development level of interactive projection technology
At present, virtual interaction technology has completed human-computer interaction, and there are many kinds of simulations with nature or virtual world. The response delay of interactive projection is less than 0.05 seconds, which is equivalent to similar products abroad and is in a leading position in China.
Interactive projection principle:
The working principle of the interactive projection system is to capture and photograph the target image (such as the participant) through the capture device (sensor), and then analyze it through the image analysis system, so as to generate the action of the captured object. The combination of action data and real-time image interaction system makes the interaction effect between participants and the screen closely combined.
The light projected by the projector is visible light, and its infrared part is filtered by its internal filter, so that the camera can't see the content projected by the projector. If infrared light is strong, the camera can see the human body. How to enhance the object image seen by the camera? Fortunately, the infrared active emission technology on the market is very mature at present. For example, the night vision camera sold in the monitoring market can emit near infrared (850 nm), and the more powerful one has a special long-distance infrared lamp. But at present, the night vision camera can reach a distance of 5m, so it is not needed. The night vision camera actively emits infrared, and then the ccd sensor receives infrared, which solves the most difficult part of interactive projection, the segmentation of human body and background virtual objects, and the camera gets a black-and-white monochrome background image including people. Next, human motion is detected by image difference technology. The difference is that you subtract two consecutive images obtained by the camera, so what do you get? You get the moving part, so as long as people are moving, the difference will intercept the moving part. The next step is to analyze the data and then project the virtual part. Of course, complex interactive projection is not only these technologies, but also the most basic principles, which also involve camera calibration, optical flow method to find the direction of motion, performance optimization, special effects and so on. Interactive projection diagram
Composition of interactive projection system
The interactive system consists of four parts: the first part: the signal acquisition part, which captures according to the interactive requirements, and the capture equipment includes infrared sensors, cameras, thermal cameras and so on; The second part: signal processing part, which analyzes the real-time collected data and connects the generated data with the virtual scene system; The third part: the imaging part, which uses the projector or other imaging equipment to present the image in a specific position. In addition to projectors, imaging devices can also be used as carriers of interactive images. Part IV: Auxiliary equipment, such as transmission lines, installation parts, audio equipment, etc.
Interactive projection system installation
Take an imaging device using a projector as an example. The equipment in the first and third parts is installed under the ceiling (suspended in some places). Pay attention to reserve enough space during installation. Generally, 0.3 ~ 0.5 cubic meters of space is enough, and the installation location needs to provide good ventilation and heat dissipation conditions. The second part of the equipment is installed in a specific computer room.
Debugging of Interactive Projection System
First, taking the use of projector imaging equipment as an example, the installation and debugging process of virtual projection interactive system is close to that of projector hoisting and debugging technology, which requires engineers and technicians to accurately project the projection image to the designated area; Second, different capture devices have special debugging technical requirements.
System maintenance of interactive projection
First, check the snapshot equipment regularly. Capture device is the first link of virtual interactive system, and its working state directly affects the operation of the whole system. The inspection contents include power supply inspection, whether the installation position is shifted, cleaning and maintenance, etc. Second, the projection equipment, interactive servers and floor tiles should be cleaned regularly to maintain high-quality images and good heat dissipation.