3.1. Media, Multimedia and Landscape Design
With the development of the times and the rapid popularization of electronic and digital technology, the connotation and extension of media have also expanded greatly. In this paper, the concept of "media" related to landscape is adopted in a broader sense, which is not limited to the traditional media concept mentioned above. Media has not only been used as a carrier to map the value and meaning of other things associated with it, but also includes the things themselves, that is, the technical means to participate in the design of works or the expression of ideas. Its research fields involve photography, film, computer, video, network, device, behavior, comprehensive media and a series of media closely related to the era of science and technology. Compared with the traditional single media such as books, magazines, TV and movies, multimedia pays more attention to a wide range of contents. It brings creative imagination with the times, information, network, human interaction, virtuality and connectivity. This greatly broadens the original limits and scope.
We can see several basic characteristics of media
(1) Materiality. It is a substance, no matter what kind of physical state it appears;
(2) Immateriality. Although it is a material, it is more important as a tool and means;
(3) Liquidity. The premise of its existence is communication. Without communication, there will be no media;
(4) Intermediate. It makes communication happen and goes on, but it doesn't belong to any party of communication.
With the development of digital multimedia technology, people have higher requirements for urban environmental design. Multimedia has created more opportunities for human technology to communicate with each other. When people communicate with each other through virtual platform, they often develop into real communication and communication. Therefore, multimedia technology has expanded rather than replaced face-to-face communication. Urban planning and landscape architecture design are facing new changes. People's life, study, entertainment and communication are more and more inseparable from the computer network. As Negroponte said, "computers will be an invisible part of our daily life that exist everywhere: we live in computers, wear computers, and even eat computers.". Digital multimedia technology makes the forms of communication and meeting more and more diverse in modern society. People communicate across time and space. The form of office learning has also changed due to the intervention of digital multimedia technology. Under the influence of digital multimedia technology, the human life in modern society is more and more different from the previous human life style.
Compared with traditional art, multimedia art makes use of television, film, network, photography and other technologies
Become their own unique art form. The progress of modern science and technology has greatly promoted the development of multimedia art, which has its distinctive characteristics of the times and timeliness. Multimedia art is a kind of art form that can make people have many associations. It establishes a personal and intimate attitude towards art and technology environment. This means that we can see artists as mediators and explorers of the Internet. The framework of a multimedia system is shown in Fig. 1.
In this context, multimedia technology presents the character, culture and image of a city in another way. In the design of urban landscape, the use of multimedia technology has also changed people's previous audio-visual experience, thus shaping a new landscape style and style in modern urban landscape.
3.2. Application of Multimedia Interaction Technology
Multimedia interaction technology refers to the technology of realizing the dialogue between the computer and the user through the computer output and input device terminal in an effective way. It mainly includes the machine application input or output equipment to the outside world to convey relevant information and instructions. The main characteristics of this technology are interactivity, sense of presence and imagination. Interactivity mainly refers to that people can display more humanized and realistic experience through multimedia interaction technology, and obtain information or aesthetic feeling through active selection and scene interaction. At present, most of the computer games in people's daily life are realized in this way. On the other hand, the sense of presence is to show people a more real representation of the world based on the computer, and then produce a real virtual image through spatial projection technology. For example, the western realistic art is to create a three-dimensional space on a two-dimensional plane through the techniques of proportion and perspective. Conceivability refers to the use of virtual reality technology to create the imaginary space of the real world, which can be in the past or in the future. Multimedia interaction technology can help people better understand the world, and cultivate their advanced thinking in the process of understanding, which is of great significance to the cultivation of people's creativity.
Architectural landscape design display in the traditional display is mostly in the form of pictures, objects, videos and so on. All the design contents are fixed in the entity space according to the part, and the audience needs to recognize them in a certain order. Most of the contents of traditional display are some architectural design, and the key content of expression is focused on architectural modeling. In the display, there are even excessive pursuit of unique visual display, completely ignoring the display of architectural landscape information. Multimedia interactive technology display platform is different from the traditional mode, breaking the previous single way of display and communication, no longer a single interpretation of physical building modeling. With the help of computer generated virtual environment, visitors can understand the architectural landscape design information through a variety of sensor channels.
Virtual display situational display refers to the creation of virtual world with the help of computer function linking display environment, and non-material performance is created by digital and light. The situation performance on the multimedia interactive platform display can not only include the real performance of the actual environment, but also reflect the situation in the imagination of visitors. Through the output device, visitors can communicate and interact, providing a lot of inspiration for architectural landscape design.
Platform display is a kind of information dissemination activity with the aid of art processing. Therefore, modern display design needs to transfer information efficiently and fully reflect people's willingness to communicate. Platform display is the information bridge between enterprise designers and visitors, and ensure that the enterprise information can be effectively transmitted to the hearts of visitors. As an information media. Multimedia interactive platform display has the advantages of high concentration, authenticity and professionalism.
The development of multimedia interaction technology has broken the traditional display fixed display mode, and the product it shows is no longer a single, fixed product. The way of information transmission is no longer limited to the visual expression, but involves the human body's vision, hearing and touch, so the information conveyed is more realistic.
The projection technology of multimedia technology, in the square design, the use of multimedia technology and glass and other materials to make a modern landscape wall. The ground pavement around the landscape wall can also cooperate with the scene wall to inject multimedia technology. For example, the multi-media technology is added to the 6-grid plot in front of the landscape wall to form a control system. When people trample on it, different ground grids will have different effects, and ink like strokes will appear automatically on the wall with multimedia technology. There will be different pictures of different people passing by. In this way, modern technology is injected into the structure of the landscape, making it vivid and achieving the full interaction between human and landscape. At the same time, we can also install multi-media sound effects on the floor grid. Different positions on the floor grid will produce different musical instrument sound effects. When different pictures appear, there will be different music backgrounds. In this way, people trample on the grid to form a painting of ink and wash, and at the same time, there will be a beautiful music. This makes the landscape on the square more interesting and makes our mood more pleasant. The application scenario based on multimedia interaction technology is shown in Fig. 2.
3.3. Cultural Concept Design of Multimedia
New media brings new cultural concepts. "Multimedia" has become one of the key words of this era. Multimedia has brought new philosophy, thinking mode, life style and aesthetic taste. It is embodied in the following aspects:
(1) The cognitive mode of multimedia. Multimedia breaks through the limitation of single media using single sense, which means that people can use several kinds of senses at the same time, and can freely choose the way of perception according to their needs.
(2) Nonlinear network thinking. Network thinking is a non planar, three-dimensional, no center, no edge network mode and structure. As shown in Fig. 3:
(3) Beyond the three-dimensional space-time. The Internet makes the world smaller and smaller, like a "global village". It also means that the world will become bigger and bigger, and people can reach any area of the network.
(4) Hypertext radiation. Hypertext can express and process information more effectively, and people can directly find and turn to the information of interest.
(5) There is no ultimate flow of information. Digital information is often in a dynamic pattern, and there will be no ultimate form. The saying that works cannot be changed has become history.
(6) Interactive dialogue. The flow of multimedia information is two-way. People not only have free choice, but also can process and transform the information individually. This is conducive to strengthening people's subjective consciousness and making culture and art obtain diversified development.
(7) Virtual means of abstracting into reality. Virtual means is the medium and bridge connecting the reality and the future, and can become the simulation laboratory of people's ideal, prediction, imagination and other advanced consciousness. As shown in Fig. 4.
3.4. The Method of Digital Multimedia Technology used in Landscape Design
In the global information society, digital technology has expanded the design concepts of ecology, humanity, diversity and technology in landscape design. The design means of contemporary landscape design are constantly updated with its own distinctive characteristics.
(1) Intelligent design means. Modern landscape environment design, with the help of technology, adjusts the climate, temperature, humidity, light, air flow and other natural conditions to form a specific environmental landscape. In addition, the landscape architecture itself reacts to the surrounding environment through power devices, optical fiber sensors, computer programs, etc., so as to realize the intelligent environment.
(2) Interactive and participatory design means. The interactive design of environment landscape mainly includes interactive device and game art. This method is realized by computer hardware and software program platform, automation technology, computer input and output equipment and some performance comprehensive materials. The strong sense of experience, interest and aesthetic sense brought by interactive design is a prominent advantage of landscape design in the information age.
(3) Quantitative means. Landscape design can use digital technology to achieve the precision, batch and diversification of design to achieve the expected environmental goals.
(4) Cross means. In the information age, a large amount of information from different regions, nationalities and countries are gathered together. New materials, technologies and concepts are widely exchanged and communicated immediately. The form and connotation of landscape are also expanded with different styles and characteristics.
Digital multimedia technology is also applicable to the decision of landscape design site selection. With the intelligent digital characteristics of computers, researchers can automatically record the environmental characteristics through preset statistical programs. Virtual space technology is used to simulate the real environment and stored in the database. In the process of site selection decision, the computer can reproduce the environmental conditions in specific time and space at any time, which will become an important basis for site selection design in the future.
The globalization of information has brought about the change of design content and process. Digital multimedia technology has set up a huge invisible network, which makes all parts of the world closely linked. Landscape design information, resources and so on flooded into every corner of the world. Under the background of digital technology, the design information collection is more detailed and accurate. Compared with the traditional process, the design operation process and information feedback process are more efficient, which are embodied in the following three aspects:
(1) The improvement of data accuracy and the increase of information. The design of modern urban landscape relies more on the technology of digital multimedia technology to solve the data collection in the early stage of design. Through the 3S and TM image technology of multimedia technology, the research process of the design is no longer as time-consuming as the traditional design, but through the efficient measurement of digital technology, the survey data is more accurate. Designers can use digital technology to track and shoot the designed site, so as to obtain a more direct feeling of the base.
(2) The efficiency of design process operation is high. Computer technology has brought convenient and fast design software, now it has been widely used in the field of design. Compared with the traditional manual drawing, the design software drawing is more accurate and fast, and easy to modify, which greatly improves the efficiency and quality of the design process.
(3) The feedback process of design is timely and sufficient. On the one hand, the feedback process of design includes the feedback of design change from Party A to Party B, and the suggestions from Party B to Party A. On the other hand, designers can establish virtual space through digital technology to test users' reaction, so that they can make timely changes to the scheme design.