2.1. AI and VR Technology
AI has enabled the combination of human and machine intelligence and has had a far-reaching influence on changes in design thinking [
12]. With the support of AI technology, the user experience, mental model, and perceptual cognitive logic are integrated into the interactive design of interior decoration to form an interactive feedforward and feedback experience that helps finally achieve the interactive design goal [
13]. The ultimate goal of AI development is to achieve automatic decision-making through AI [
14]. In the process of metadata’s gradual development into knowledge, intelligence, and information, multiple information structures and empirical models play an important role.
VR allows its audience to obtain a sense of reality in a virtual environment through high-tech methods. VR is a digital environment with computer techniques at its core and is integrated with associated science and technology, thus creating a virtual environment that highly approximates a real environment with respect to sight, sound, and touch [
15]. To sum this up, based on computer technology, it can simulate real things and create fictional virtual things, which is a breakthrough for VR technology when it comes to exploring the history of human civilization. With this digital technology, people can relive history, feel the present, and experience the future. Historically, VR technology has also provided a new way for human cognition, exploration, and creation.
The evolutionary development of VR has gone through five stages from the initial vague concept to the current high-speed technology: the embryonic development stage (the early 1900s to the 1960s), the research and development practice stage (the early 1960s to the end of the 1980s), the civil development stage (the early 1990s to the early 2000s), the flat stagnation stage (the early 21st century), and the golden stage (2011 to the present) [
16].
VR technology is the integration of multiple disciplines and finally forms a new product with unique characteristics [
17]. The three most distinctive features of VR are immersion, interactivity, and imagination, as shown in
Figure 1.
The three characteristics of VR technology are immersion, interactivity, and conceptualization. Virtual reality, also known as virtual technology or virtual environment, is a new practical technology developed in the 20th century that utilizes computer simulation to create a three-dimensional virtual world. It provides users with visual and other sensory simulations that make them feel as if they are experiencing their surroundings and are able to observe things in 3D (three-dimensional) space in real time and without limitations. VR has made great progress and is becoming a novel field as technology develops.
(1) Immersion: With digital technology, VR can provide the most authentic experience. The sense of immersion of the five senses is the most significant part. A virtual environment is simulated by computer simulation technology. Visually, it can show the real picture of the objective world. Haptically, it can stimulate the viewer’s senses with the simulator. In terms of smell, it can also match the virtual environment to change the smell in the real scene. At this time, the audience can obtain a more realistic experience from the visual, auditory, tactile, olfactory, and other aspects, similar to being in the real world. This is the immersion of VR technology. (2) Interactive user experience—“human–computer interaction”—is a special focus in today’s design process. VR regards human interaction as a key point that takes it to a new level. VR technology uses computer equipment to increase the audience’s affinity for virtual scenes, which is the most important feature of VR technology [
18]. At present, there are a large number of products on the market that can improve the user experience, of which films, television, games, and travel are the most prominent. The interactive characteristics of interactive technology are the bridges to realize its optimal device usage and user emotion. Before the popularity of VR technology, most gamers might have felt that “people”, “machines”, and “games” were completely separate, but, in VR, due to the interaction between people, they can have more intimate feelings with the environment in the game, thus weakening the impact of mechanical devices on the game. (3) Highly creative imagination: in psychology, imagination refers to the reassembly of information that already exists in people’s minds into new information. One of the characteristics of VR is that it can enrich the imagination of the viewer, which means that the viewer can be immersed in the virtual system. The imaginative presentation allows the viewer to make new associations with the product and has an immediate inspirational effect that can change people’s mindset.
2.2. Interactive Design of VR Interior Decoration
Nowadays, people pay more attention to the pursuit of the spiritual world, so the requirements for decoration are becoming increasingly great. Therefore, VR technology begins to be widely used in interior decoration [
19]. Because of its wide coverage and application links, it is necessary to strengthen the research on the application of this technology in interior decoration, so that the application of it in decoration can be improved continuously.
The application of VR technology in interior decoration is the most basic one. Effective use of three-dimensional modeling technology can realize the extension of three-dimensional space and enhance the three-dimensional sense of interior decoration space, so as to better turn virtual space into reality.
In the past, in the process of designing a house, the residents designed it according to their own ideas. They decorated it completely by their own intuition, without any design drawings. However, in today’s society, people are becoming more demanding, and they are eager to make some changes to the houses they live in. Customers can communicate with designers and inform them of their needs. After that, designers design according to their own experience and understanding. However, since the design drawings are not realistically displayed in front of the client, or the client is not a professional, they cannot really understand the design, so some large projects can use VR technology. VR technology is rapidly evolving in interior design systems. Compared with the traditional hand-painted exhibition, the three-dimensional technology presented by VR has great advantages. Its size and scale are closer to reality and can be better displayed, which makes it not exaggerated by artificial rendering. Such a design can better express the effect that the designer wants to achieve. Due to its life-like nature, it can bring a better design feeling to the client, without the regret of design mistakes [
20]. This design is more humanized, professional, and technical, which can make the design process faster and more realistic.
As people all know, designing and implementing a project requires a lot of money, material resources, and manpower. During the design process, it is often difficult to express the client’s ideas through drafts. Some clients may ask to see the renderings. At this point, if VR technology is used for mapping, the whole process can be faster, and the data obtained can be more accurate [
21]. However, VR technology has a big defect. That is, its cost is relatively high in practical applications, so in large projects, this technology can be used extensively, while, in smaller projects, its use changes depending on the client’s preferences. Compared to traditional technologies, virtual technology is more valuable, mainly because it is a new information technology, and it does not have many users at the moment.
VR technology is used to provide users with a very intuitive and visual feeling by using the computer effect picture. The application of VR technology in interior design is of great value. In general, this paper considers that VR technology mainly includes several aspects, shown in
Figure 2.
VR is an important direction of simulation technology. It is a combination of simulation technology and computer graphics, human–computer interface technology, multimedia technology, sensor technology, network technology, and other technologies. It is a challenging interdisciplinary and research field with cutting-edge technologies. VR mainly includes aspects, such as simulated environment, perception, natural skills, and sensing devices. The simulation environment is a real-time dynamic three-dimensional realistic image generated by a computer. Perception refers to the ideal VR that should have the perception that everyone has. In addition to the visual perception generated by computer graphics technology, there are senses, such as hearing, touch, force, motion, and even smell and taste, also known as multi perception.
- (1)
Intuitive expression of interior decoration design
With the rapid development of information technology, a question worth exploring is how to use information technology to present modern interior design vividly and make users better understand the designer’s design intention. The traditional interior decoration design not only involves a lot of fields, but also has a relatively complex process. It is mainly hand-drawn, with a relatively simple way of expression. It is difficult for designers to express their true thoughts directly, and users cannot really feel the designers’ intentions.
- (2)
Improvement of design efficiency
In the previous design, designers mainly designed according to their own design experience and cases, and then they carried out creative design on this basis. In this process, designers would spend a lot of time organizing the design information, so the efficiency of the design work was very low.
- (3)
Attraction of the introduction of scientific and technological elements to consumer groups
Human life and work have become more and more convenient. Whether household interior designers can provide effective solutions for users can be said to be the basis for obtaining user recognition. Designers can use VR technology to establish an interactive analysis system for interior decoration design, which is convenient to mobilize the enthusiasm of users to participate in design activities.
The application analysis of VR technology in the interactive analysis of interior decoration design is shown in
Figure 3.
The collation of residential interior decoration design data applies VR technology to the interactive analysis of interior decoration design with attention to the sustainability of the design industry [
22,
23]. Parameters of residential interiors are collected mainly in quantitative and variable terms. After collecting the relevant data, it is necessary to classify the type and structure of residential interior space, the selection and configuration of residential interior furniture, the design of residential interior ceilings, and the design of residential interior flooring, as well as to create a corresponding database.
Establishment of a corresponding database for three-dimensional modeling: after collecting and sorting out the above data, designers can edit three-dimensional information of each part of the space through VR technology, according to the actual requirements of interior decoration design, combining the actual needs of quantification and variables, and they can establish a visual and intuitive three-dimensional data model library. In particular, it is necessary to ensure that the data provided are correct in order to make the three-dimensional display more intuitive.
Development of immersive interactive system: in the specific design process, designers can use VR technology to complete an immersive interactive system, thus providing a realistic three-dimensional simulation environment for designers and users. Meanwhile, the VR environment and the interactive system are organically combined by using traditional devices, which makes it easier for users to carry out relevant operations, so as to obtain more realism. In addition, designers mainly interact with the virtual environment through sensing devices to achieve real-time information editing, which is mainly through quantitative selection or variable selection. It allows users to obtain multiple senses, such as vision, hearing, and touch, and then it helps users complete the interactive analysis function of the interior decoration design of the house.
2.3. FCE
A FCE approach to evaluate AI and VR based interactive design systems for interior decoration is needed to better understand the integrity of the system.
The FCE method is a systematic analysis and evaluation of “fuzzy” objects by using the basic principles of fuzzy mathematics. It mainly adopts fuzzy reasoning, qualitative and quantitative combination, and precise and imprecise combination, while taking into account the complex internal relationship between objects and complex value systems.
The FCE method is to combine the existing evaluation indicators with the test data, and then one can make a comprehensive evaluation of the evaluation objectives through fuzzy transformation. Its basic principles are as follows:
If an object, P, is evaluated according to factor I, and the evaluation level is comment set
, then the fuzzy relationship between the factor field and the comment field can be expressed by the evaluation matrix (1):
is the degree to which factor has , that is, the degree of subordination of factor to level , and .
It is assumed that the fuzzy subset on the factor field is:
is the subordinate degree of to W, which is the measure of the role of single factor in the total evaluation factors. W is usually called the fuzzy weight vector of factor set I.
It is assumed that the hierarchical fuzzy subset on the comment field B is:
Among them, is the subordinate degree of object P rated as grade , and Q is the comprehensive evaluation result.
In fact, when
W and
R are known, the following holds:
The comprehensive evaluation result Q can be obtained by Formula (4). Among them, can select some fuzzy product operation according to the actual problem.
In this paper, the FCE method was used to evaluate the interior decoration interactive design system based on AI and VR. After the system design was completed, the evaluation result of this paper was good. Therefore, the system designed in this paper had passed the FCE.