Interactive Projection

Typical software introduction of interactive projection system: Interactive mode: multiple people at the same time, no sequence, frame rate 60 FPS, 1296 points at the same time.

Detection algorithm: Freely set smoothing and noise reduction algorithms, identify accurate points, and freely set sensitivity to adapt to most hardware environments.

Response time: <15ms light volume correction, no drift for interactive calibration.

Multi-screen interaction: Support multi-camera, easily realize large screen interactive projection.

Interactive content resolutions: 1024 x 768, 2048 x 768, 3072 x 768, 4096 x 768, 2048 x 1536, more resolutions can be customized.

Template interface: You can easily and quickly replace interactive elements.

Operating system: Windows xp 32bit/64bit Windows 7 32bit/64bit. Display Support: Supports all projectors, LCD screens, LED large screens, plasma, digital video walls, etc.

Camera installation: The system can set the image to flip horizontally and vertically, and freely set the capture range of the camera.The camera just matches the projected image, then the installation will be more convenient.

The interactive projection system is an interactive system for advertising and entertainment that integrates the highest technology in the world.

The interactive audio-visual system provides an unusual and exciting effect system for advertising and entertainment.

It is suitable for all public indoor places, especially for leisure, shopping and entertainment. and educational establishments. In 2013, the virtual interaction technology has completed the human-computer interaction part. And there are various simulations with the natural or virtual world.

The response delay of interactive projection is within 0.05 seconds. It is comparable to similar foreign products and is in a leading position in China

The operating principle of the interactive projection system is to first capture and shoot the target image (such as a participant) through the capture device (sensor), and then analyze it by the image analysis system to generate the motion of the captured object.

The action data is combined with the real-time image interaction system to produce a closely integrated interaction effect between the participants and the screen. The light projected by the projector is the visible part. Its infrared part is filtered out by the filter membrane inside it. This makes it impossible for the camera to see what the projector is projecting.

If the infrared rays are strong, the camera can see the human body. How to enhance the image of the object seen by the camera? Fortunately, the infrared active emission technology on the market is very mature.

For example, the night vision camera sold in the surveillance market can emit near infrared (850 nm), and the power is higher. There are special long-distance infrared lights, but 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 the infrared.

The most difficult part of interactive projection, the segmentation of the human body and the background virtual object, is solved. The camera obtains a black and white monochrome background image including people.

The next step is to detect the movement of the human body, using the image difference technology. The difference is to subtract the images of two consecutive frames obtained by the camera. What is obtained?

What is obtained is the moving part, so as long as the person is moving , the difference will intercept the moving part. The next step is to analyze the obtained data, and then project the virtual part.

Of course, complex interactive projection is not just these technologies, these are just the most basic principles, which also involve camera calibration, optical flow method to find motion direction, performance optimization, and special effects.

According to the needs of the environment and the characteristics of the industry, interactive projection systems mainly fall into the following categories.

Interactive floor projection

Desktop Interactive Projection System

interactive wall projection

Interactive rear projection system

window interactive projection system

Facade Interactive Projection System

Countertop Interactive Projection System

Aerial flip book projection system

Aerial remote pointing projection system

Projectors, signal receivers, equipment hangers, servers, control software, speakers, multimedia software, projection screens, etc.

The composition of the interactive projection system is mainly divided into the following parts:

The first part: the signal acquisition part, capture and shoot according to the interactive needs, the capture devices include radar, infrared sensor, video camera, thermal camera, etc.;

The second part: the signal processing part, which analyzes the data collected in real time, and connects the generated data with the virtual scene system;

The third part: the imaging part, which uses a projector or other imaging equipment to present the image in a specific position. In addition to the projector, the imaging equipment can be used as the carrier of the interactive image, such as plasma display, liquid crystal display and LED screen.

Part 4: Auxiliary equipment, such as transmission lines, installation components, sound devices, etc.

Installation

Taking the use of projector imaging equipment as an example, the equipment of the first part and the third part are installed under the ceiling (some places are suspended), pay attention to reserve enough space when installing, generally reserve 0.3 to 0.5 cubic meters of space It 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

Firstly, taking the use of projector imaging equipment as an example, the on-site installation and debugging process of the virtual projection interactive system is similar to the projector hoisting and debugging technology. It requires engineers and technicians to accurately project the projected image into the designated area. second, different capture devices There are special debugging technical requirements.

Maintain

Firstly, check the capture device regularly. The capture device is the first link of the virtual interactive system, and its working status directly images the operation of the entire system. The inspection contents include power inspection, whether the installation position has been moved, cleaning and maintenance, etc.;

Secondly, regularly clean the projection equipment, interactive servers and floor tiles to maintain high-quality images and good heat dissipation.

Development Trend

Due to the limitation of the principle of traditional interactive projection technology (the posture information of the human body can only be captured from the front), the interactive projection can only roughly locate the action posture of the human body, so its application can only be limited to some occasions with low requirements. The multi-touch technology based on the large screen is becoming more and more mature, and the multi-touch technology that can accurately perceive finger information is gradually replacing the traditional interactive projection.

Innovative Applications

The earliest application field of interactive projection technology is the field of interactive multimedia education. Its early application made the teaching gradually weaken the traditional chalk teaching mode. It greatly increases the convenience of teaching and enriches the content of teaching.

With the continuous innovation and development of interactive multimedia technology. The fields of interactive projection technology are becoming more and more extensive.

Interactive projection uses computer vision technology and multimedia projection display technology to create a modern and brand-new interactive interactive experience that is both real and illusory.

At the level of dissemination of information content, adhere to the concept of content attracting people’s hearts, and establish the strongest recognition and maximum value of content delivery.

Through projection technology and touch technology, consumers can interact with the screen effectively. This new interactive experience can greatly attract people’s attention both visually and physically.

Interactive projection technology as a virtual reality technology and motion capture technology. There is no doubt that it will have a broad space for development in the future.

It will carry out technological upgrading and application of traditional single-media and multimedia communication forms. It has changed not only a form of communication, but also a concept of communication.

A shift from traditional cramming to a human-experienced satisfaction. Through fantastic visual effects and wonderful dynamics, the distance between the dissemination of information and consumers is brought to the nearest point.

In the process of manipulating the virtual image, the player naturally accepts the information content and elements transmitted in the real environment. This inherent attraction is undoubtedly easy to occupy the minds of consumers, so as to achieve an interactive emotional resonance.

The development of interactive projection technology promotes the rise of this interactive projection technology company.

The brilliant digital audio-visual technology interactive projection system includes ground interactive projection technology, rear projection interactive projection technology, desktop interactive projection technology, wall interactive projection technology, and specific interactive display methods.

There are water ripple interaction, flip interaction, collision interaction, erasure interaction, avoidance interaction, follow interaction and other forms. The player has a perfect active interactive experience through the body movements and the seamless cooperation of the interactive projection technology.

Whether it is visually, physically, or emotionally, it can bring the player an unprecedented new interactive experience that perfectly integrates human and machine.

Science and Technology Museum, Planning Museum, Museum, Industry Exhibition Hall, Theme Exhibition Hall, Enterprise Exhibition Hall, etc Wedding ceremony / office building / performance venue / square and other places that cannot be achieved by traditional multimedia technology.

Advertising revolution

A major change in the field of advertising, the interactive projection system can provide a variety of information including various pictures and patterns that people want or need. A new form of advertising that expresses itself in a unique way.

At the same time, it also breaks the traditional hanging style of traditional static advertising without entertainment;

The emergence of the interactive audio-visual system has represented a new type of modern advertising mode, which can attract all the people to stop and watch and interact, and has a good publicity effect.

Venue Highlights

A new bright spot in consumer venues. The fantastic visual effects and wonderful dynamics of the interactive projection system will attract all customers, audiences and even passers-by to stop and watch interactively, and engage all customers and audiences through its interactive screen and sound changes.

Thereby enhancing the inherent attractiveness of entertainment and leisure, and promoting consumption and re-consumption. It is very suitable for leisure and entertainment places such as bars, hotels, KTV, bars, etc.

The technology used in the interactive projection system is mixed virtual reality technology and motion capture technology. It is a further development of virtual reality technology.

Virtual reality is a technology that generates three-dimensional images through computers and provides users with a three-dimensional space and interacts with them. Through mixed reality, users can interact with the real environment while manipulating virtual images, thus enhancing the senses.

Attracting people, novel interactive effects will inevitably attract and guide people to visit, while good design and artistic effects add an interactive atmosphere to the museum.

The guiding direction can be used as a functional type, such as intelligent museum guidance and inquiry, which is more user-friendly than the traditional sign inquiry screen in the past.

Non-contact communication is more humane, and at the same time reduces bacterial infection due to human contact.

Economic benefits, new media art can be made into the form of real-time interactive advertisements, allowing tourists to interact with publicity content, increasing the popularity of the museum, deepening the impression of tourists on the museum, and entertaining the audience while the museum is being promoted, killing three birds with one stone.

Interactive floor projection

This interactive projection system transmits the captured images to the application server through sensors that can capture portraits or other devices, and through systematic analysis, the movements of the captured objects are generated. The action data is combined with the real-time image interaction system to produce a closely integrated interaction effect between the participants and the screen.

Flip book in the air

This technology is an open virtual book placed on a booth. When the user stretches out his hand in front of the booth to turn the book, the virtual book can actually turn the pages, allowing the audience to browse the content of the book, and the vivid dynamic page-turning effect is accompanied by sound effects.

Dome system

The dome system uses projector splicing technology. The most common application we see is projecting a giant globe. Usually a projector can only project one plane, and the curved screen of metal material requires two or more projectors to be spliced to complete. In order to obtain better results in outside pitching, more than three projectors are required for splicing to complete. Edge fusion is performed through software to achieve seamless splicing of multiple projectors.