What is Mixed Reality (MR)?

MR technology – (Translation: Augmented reality) establishes the human perception of an augmented reality environment with different levels of computer-generated virtual reality. The blending of two real and virtual environments to create a new environment in human perception, where physical and virtual objects coexist and interact with each other in time. real-time. The concept of MR is in the chain of establishing the state of Mixed Reality Continuum (proposed by Paul Milgram in 1994). On the MR Continuum sequence diagram, Paul Milgram has described a series of states from Reality to Imaginary, whereby the pure Real and Virtual Environment that we still know are at the two poles (ends) of the state chain. This state, the middle (including a mixture of Real and Virtual levels) is called Mixed Reality. Currently, in the research and application of science and technology, when it comes to MR technology, we need to understand that it includes both VR & AR concepts (MR=VR+AR) and depending on the levels of entity enhancement. virtual (not as has recently emerged the MR≠VR&AR designation). VR: Virtual Reality, AR: Augmented Reality

Since the 60s, MR technology has been born and effectively supported scientific and technical fields such as aviation, national defense, television, medical surgery, commerce…

Heydar Aliev Cultural Center (Azecbaijan) by Zaha Hadid- Parametric design has created new modern architectural forms.

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Development trends of MR applications in Architecture – Construction

Architectural design and construction work is increasingly developed and diversified in all phases: Surveying and promoting, contacting investors, finding ideas, concept design, technical design, construction and installation. – production, operation management, maintenance – maintenance… As the design – construction of modern works is increasingly complex and requires high scientific and technical progress, the traditional working steps have become obsolete. cannot meet all actual requirements.

Therefore, it is necessary to have strong support of multimedia applications when: Meeting to plan, exchange ideas (concepts), present architectural space with customers, train – guide – simulate construction and installation … all of these activities need the help of computers in visual simulation so that the “perspectives” of the parties involved in the design-construction work are understood (converged) and mutually agreed. high consensus. Accordingly, Mixed Reality technology has entered the field of architecture – construction and is showing strong and attractive potentials – creating new effective and vivid display interfaces for Architecture visualization – Construct.

Paul Milgram’s Virtual Reality Defining Series (1994)

Initial basic applications of MR technology: Medical – Television – Technological engineering – Defense training – Commercial transactions

In the last 15 years, the research and development of MR (VR & AR) technologies for application in industrial engineering design in general and architectural design – construction in particular has been interested in development by many countries. Not to mention leading countries such as the US, Japan, Korea, Saudi Arabia, Finland, Australia, Singapore, Hong Kong, New Zealand, China… Contents related to the development of MR applications in architecture – construction Construction has also become a separate subject or major that is shaped and taught by many schools in the Faculty of Technology – Architecture – Construction, with the name is Computer Aided Architectural Design (CAAD – Computer – Aided Architectural Design) Thiết kế)

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Asian countries are also interested in and strongly developing research and application of design automation and MR in Architecture-Construction. Every year, the Association for Computer – Aided Architectural Design Research in Asia (The Association for Computer – Aided Architectural Design Research in Asia) forum organizes national conferences organized by universities of engineering and technology – University of Architecture and Construction and research institutions. science and technology undertake. The leading multidisciplinary engineering universities in Asia have long built VR labs – MR Labs, besides these universities, Architecture and Construction training schools or colleges have been interested in researching – CN Mixed Reality application (Yonsei University, Kyungpook University, Seoul National University, National University of Singapore, National Taiwan University, University of Hong Kong, University of Tokyo, Osaka University, Chualalongkorn University…) MR field supports Architecture – Construction.

Project participants working on ordinary paper drawings will find it difficult to come to a consensus on complex projects because of the lack of a common visual interface.

With the outstanding development of digital technology, countries are entering the 4.0 technology revolution with cloud computing technology (Cloud Computing), with the trend of Internet of Things (IoT), Digitization of things, Smart space, Smart environment. This is also a favorable “infrastructure” for VR&AR (MR) technologies to step into an outstanding development stage.

VR application levels in Architecture – Construction.

– We still need to understand that VR is in the concept concept is the starting technology of MR.

– VR technology has been growing in popularity to create VR views, VR space, VR tours for people to feel more deeply about the space and the architecture being designed.

VR Cave simulates architectural space (VR Space)

Immersive VR – HTC Vive glasses users are “immersed” in Virtual Space and interact directly with virtual objects that look through the trigger handle

– The nature of today’s popular graphic design applications such as BIM software (Revit, ArchiCad, Naviswork, Teckla…) or AutoCAD, SketchUp… all focus on setting up VR interfaces for customers on the desktop to observe products. products in 3D and real-time. This is considered the most basic display level of VR.

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– The next development step, VR technology wants to bring the user’s perception to “immerse” into the artificial space, allowing people to experience and interact Real-time in the VR architectural environment. .

– Next is the development of advanced supporting digital technology (with mobile devices) to help people feel more deeply in the artificial architectural space, even simulating real elements for illustration. back in the VR environment as an alternate avatar image

AR technology – The model of the washbasin table appears in real space

AR application in Architecture – Construction

– AR technology is a display that blends virtual objects in a real environment, so it is often understood closer to the concept of Mixed Reality.

Immersive VR – Siemens’ MobileVR system allows passengers to experience the most realistic vehicle design (avatar simulates user activities)

– In the general concept of MR technology, AR is the next step of development from the existing VR, in order to bring computer-generated virtual entities “off the screen” to connect and augment in the real environment. the user is surveying. With AR, the real environment still plays a key role in the user’s perception – Users do not lose their perception of the real surroundings, but can also interact in real-time with computer-generated virtual entities. strengthen” in. Understanding this, we will see that there are a lot of ideas to apply AR in modern architecture-construction, because for a long time, designers-constructors have always wanted to find more solutions. simulation method – presenting the design of the building. AR technology in particular and MR in general has the potential to support very actively in the work of simulation – reference – presentation of graphic design products, in order to create “early visual relationship” of real-life objects. The architectural entity is designing with the field environment, helping users (architects, construction engineers, contractors, customers, technicians, workers…) to experience and properly evaluate the design before construction.

AR technology – Simulation combination of Ecotect Analysis (BIM) and AR (Author and research team at Kyungpook National University, Korea in 2011)

Recently, many architectural items have used MR technology to create high-tech products in the works (Interactive kitchen, Interactive Table, Interactive bar, Smart space, Interactive working-roundtable…). The trend of building and developing smart architectural space (with interactive effects) Smart space- smart environment is currently exploiting and applying many MR technology techniques.

Basis of application of Mixed Reality technology in Architecture – Construction in Vietnam

In recent years, MR technology has been interested in and basic research by Vietnamese information technology experts at Computer Vision Labs such as: MICA Institute – Hanoi University of Technology, Department of Industrial Construction – Hanoi University of Science and Technology, Academy of Posts and Telecommunications – Multimedia major, Institute of Military Technology, Institute of Information Technology – Vietnam Academy of Science and Technology and IT faculties at other universities. Basic MR commercial applications are gradually becoming popular as high-end utility applications in architectural works and human entertainment activities (eg Pokemon Game, AR Kun toy set, etc.) Kinect Box, AR Book, etc.)

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AR technology – Virtual details (ventilation ducts) are presented simultaneously as users view and interact with real design drawings – Author experiments – Simulation of structural layers of industrial architectural design .

Besides, now there are a few units promoting the application and commercialization of MR technology, to put into operation the design – architectural visualization as well as digital design for industrial products (Company Co. 3D Vni, VR3D… and some foreign companies providing construction support solutions such as Viasys VDC Vietnam). These are considered very positive initial results and the potential of MR technology is still very much ahead. In Vietnam, in terms of basic research, we are completely able to approach – research – and gradually master MR-supporting technologies to apply in architecture – construction.

Interactive bar – One Variant other than VR&AR but still in MR (called Augmented Virtuality)

From the end of 2016, the Prime Minister approved the Scheme on the roadmap for BIM application of construction automation technology to 2020. The research to connect MR display technology with BIM Building Information Modeling is also very important. has potential for development and needs further study.

According to that trend, there should be research attention from universities specializing in Architecture – Construction, followed by technology architects, when embarking on research, need the cohesion and support of experts. Information Technology. Research and application of Mixed Reality technology like other sciences (such as information technology) also requires a certain investment in display devices (such as HMD Head-Mounted Display glasses, Tracking Camera, etc.) Projector & Screen) or more advanced requirements are interactive electronic devices (such as Interactive Glove, Tracking device…). However, initially, MR studies can be carried out right from the basic applications to grasp the technology without requiring too much investment.

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Users observe and interact with 4D architectural models through Hololens HMD glasses- Commercial experiment of 3D Vni Company

Interactive Kitchen- Another variation of VR&AR but still under MR (called Augmented Virtuality)

(This research is sponsored by Hanoi University of Science and Technology under project number T2016-PC-155) The article is part of a series of articles on the application of Digital Multimedia technology in Architecture-Construction.