[Media Eyes Seeing the World] No. 64 | Naked Eyes 3D: Eyes "deceived" brains to present realistic three -dimensional world

Seeing the world

A "fancy" live program "Sanxingdui Excavation" brushed the circle of friends a few months ago. Diversified technical means and presentation methods allow the audience to feel the charm of cultural relics and archeology in the situation. It is worth noting that in this live broadcast, naked eye 3D technology is fully used as a new perspective. The short film "Calling Eyes" with the theme of Eye "Eyes" has brought unprecedented visual feelings to the audience.

3D technology is a new type of display technology that can make the picture three -dimensional and realistic. The image is no longer limited to the plane of the screen, so that the audience seems to be able to get out of the screen and make them feel immersive, but it takes to watch this kind of screen. Wearing a lens to see the three -dimensional effect.

Naked eye 3D technology, as the name suggests, you don't need to wear any viewing equipment, you can enjoy the cutting -edge technology of 3D effect images through the naked eye. The reason why this real three -dimensional sense is because it uses the principle of human binocular vision, and several methods often use through three -dimensional models, such as perspective structure, lines, light and shadow, color contrast and other depths Feeling, you can make your eyes "deceive" the brain and show a realistic three -dimensional effect.

In fact, naked eye 3D technology is not new. In May 2020, on the streets on the streets of Seoul, South Korea, on the large outdoor screen height and 80 meters wide, there was a burst of waves rolling around. The audiovisual effect was very shocking. From this day, the naked eye 3D technology has become the new favorite of the outdoor advertising industry, and has also entered the public's vision. Well -known cases include Nike Advertising on the streets of Shinjuku, Tokyo, Japan, and 3D cats. These naked 3D videos have attracted countless pedestrians to stop because of their creativity, realistic effects, and located at the bustling crossroads. After that, many international metropolis followed closely, and the same shocking pictures were successively launched.

Chengdu Taikouli naked eye 3D screen

(The picture is provided by the author)

Under the sweeping of this visual storm, the Chinese market seized the opportunity to respond quickly. Five months after the "out of the circle" in Seoul, a "spacecraft" of the naked eye 3D advertisement in Chengdu Taikoo Li was officially unveiled, and the creativity and production level of the work reached international first -class. Since then, cities such as Beijing, Chongqing, Shenzhen, Wuhan, Xi'an, Fuzhou, Foshan, and Nanning have followed up and used this technology to launch a variety of creative works.

In fact, all the cases we see are essentially a video short video. How does that ordinary video achieve the effect of naked eye 3D? In addition to the previous three -dimensional modeling methods mentioned earlier, there are two common tips: one is to add "frames" to the video, that is, add a circle of frames around the video, and this frame keeps remaining. It feels that it does not belong to this screen, but it is more like a part of the building. The subject in the screen crosses the outer frame or enters the black part, as if the screen is rushing out of the screen. It is this strong sense of visual impact that allows this technology to have a sense of technology and art that can instantly grasp the eyeballs and impressions to achieve the "one -year -old" communication effect.

However, unique advantages are also accompanied by obvious limitations. We often need to obtain the best viewing effect at a specific viewing location. If it is too close or the angle is too biased, the displayed content is likely to cause distortion to "wear help". Therefore, when we see the widely circulated naked eye 3D videos, most of them are shot from a single angle. So how to reduce this sense of "wear" in actual operation? Many excellent naked eye 3D projects have two common features: one is that the screen is very high, raising the viewer's perspective, naturally produce a sense of distance and space; the second is to use the on -site environment Watch the area, such as setting the screen at a narrow passage or intersection intersection, planting flowers and trees in areas that should not be viewed. Based on the above two means, naked eye 3D technology can fully avoid strengths and avoid weaknesses.

In fact, this technology is still in the early stage of development, and there are still problems such as technical bottlenecks, insufficient creativity, and high costs. How to break through is the focus of thinking and solving.

The use of Naked Eye 3D technology in Sanxingdui archeological live broadcast has given new vitality of cultural relics. It is a new attempt and exploration of the museum's innovative display form and the means of dissemination.

Author: Li Jiaxin

Assistant researcher at the Science and Technology Museum Science and Technology Museum Science and Technology Center

(Reprinted from this article: "Popular Science Times" 2022-8-12 (2nd edition) "Media Eye Watch the World" column)

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