Poster design is one of the manifestations of visual communication, which integrates elements such as pictures, characters, colors and spaces to show people propaganda information in an appropriate form. Posters originated in Shanghai, which is a way of publicity. The nature, organizer, time and place of the activity should be clearly written on the poster. The use of posters is mainly divided into advertising posters, modern social posters, corporate posters, cultural posters, film and television drama posters and so on. What are the characteristics of poster design? Poster design is a design and production process of using design techniques to embody a healthy culture in the form of pictures and texts and posting it in public places to publicize public morality, public laws and regulations, social culture and so on. There is no obvious commercial purpose. The following are the poster design features recommended by Bian Xiao. Poster design has the following characteristics: 1, and poster design is non-profit and non-profit is the biggest feature of poster design. Posters are different from commercial posters. Their starting point is not for commercial purposes and interests, but for the interests of the public. The ultimate goal is to maintain social harmony and stability and promote social development. Posters aim at the harmonious development of man and society, man and nature, and aim at social protection and improving group literacy to promote social development. Pay attention to social benefits. One thing to note is that not making profits does not mean that making posters is a loss, but should be flat or profitable. Only the units or individuals engaged in posters shall not distribute the surplus among the owners and managers, and must be used to improve the quality and quantity of posters. 2. Poster design has a wide audience, which is also a major feature of posters. Generally speaking, posters are aimed at the vast majority of citizens, not a few specific audiences. The responsibility of the poster determines that the more people see and accept the contents of the poster, the better the effect will be, regardless of age, gender or even national boundaries and languages. Therefore, the effective transmission of poster information should be considered when designing posters. 3. Poster design has graphic language, which is the main way to convey information. Posters, as a category of poster design, also abide by the principles of poster design, so they have higher requirements for the communication of graphics and creativity, and cannot rely too much on words to convey information. What are the main features of poster design? Poster is a kind of visual media that uses many visual elements such as graphics, characters and colors as the means of expression, and quickly and intuitively conveys various information such as policy, business and culture. It is an "instant" advertisement and street art, mainly used in outdoor public places. This nature determines that posters must have large-size pictures, and attract people's attention with easy-to-understand graphics and words, vivid visual images and eye-catching copywriting, so as to achieve the purpose of conveying information and let viewers understand their intentions quickly and accurately. In addition to the large screen and strong visual impact, modern posters must keep up with the development of the times, conform to the aesthetic psychology of modern people, be close to modern life, and have unique creativity and high artistry. A good poster work must clearly express the theme and ideological connotation of the poster, that is, the ideas conveyed must be concentrated, concise and clear, giving people a clear and accurate concept. Cut into the theme from a novel and unique perspective, fully develop imaginative thinking, and explore new ideas from a macro perspective, a social value perspective and a personal concept perspective. In fact, the poster with deep thinking power comes from the designer's careful understanding of ordinary life, the thinking of creative ideas, values, aesthetics and philosophy brought by life, and triggers emotions with the viewer. They used different expressions to reveal the profound philosophy contained in the posters, thus giving people more enlightenment. Large posters with pictures are not designed to be held in your hand, but posted in places and environments that can attract people's attention outdoors, which will be affected by the surrounding environment and various factors. Strong farsightedness In order to impress people who come and go in a hurry, poster design should fully embody the principles of positioning and individuality in addition to a large area. Prominent titles, concise graphics, contrasting colors, or large areas of blank space attract the attention of the audience and can become the visual focus in far away places. Posters can be said to have the typical characteristics of advertisements. As far as posters are concerned, they include commercial posters and non-commercial posters. Among them, commercial posters are mainly expressed in the form of photography, realistic painting or comics with specific artistic expression, leaving consumers with real and touching pictures and humorous feelings. Instead of commercial posters, it has a wide range of contents, diverse forms and rich artistic expression. Especially cultural and artistic posters, according to the theme of the advertisement, can exert imagination and artistic means. Many painters who pursue formal beauty actively participate in the design of posters, and design posters with different styles and forms in their own painting language. 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