息投影和都是一种虚拟成像技术，两者有联系也有区别，可以说技术是全息投影技术的一个部分，270度幻影成像、360度幻影成像都是全息投影，全息技术是可以从不同的角度上都可以看见立体的虚拟影像，而通过斜置45度的玻璃来反射底部或顶部的影像，两者观看都不需要佩戴3顿眼镜。下面请看详细的介绍。
Information projection and are both virtual imaging technologies, which are related and different. It can be said that technology is a part of holographic projection technology. 270 degree phantom imaging and 360 degree phantom imaging are holographic projection. Holographic technology can see three-dimensional virtual images from different angles, and reflect the images at the bottom or top by tilting 45 degree glass, 3D glasses are not required for both viewing. Please see the detailed introduction below.
1、从原理上看区别
1. In principle, the difference
是实景造型和虚拟影像的光学成像相结合形成的虚拟成像系统，是将需要指定拍摄的影像、人或物投射到主体模型的景观中去，演示事件的发展变化过程。
It is a virtual imaging system formed by the combination of real scene modeling and optical imaging of virtual images. It projects the images, people or objects to be shot into the landscape of the main model to demonstrate the development and change process of events.
全息投影是利用干涉和衍射原理记录并再现物体真实的叁维图像的技术，无需佩戴3顿眼镜就可以体验到立体的现场效果的一种技，还能使虚拟影像与表演者产生互动，带来很好的体验。
Holographic projection is a technology that uses the principles of interference and diffraction to record and reproduce the real three-dimensional image of the object. It can experience the three-dimensional field effect without wearing 3D glasses. It can also make the virtual image interact with the performer and bring a good experience.
2、从结构上看区别
2. Differences in structure
系统是以银幕环境、布景模型、背景灯光变换为背景，把拍摄的活动人像添加进场景中，形成动静结合、灵活多变的影视画面，幻影成像系统主要包括：立体模型、灯光系统、成像系统、数字内容播放系统、主机中控系统、影像系统等系统组成。
The system takes the screen environment, set model and background light transformation as the background, adds the photographed moving portrait to the scene, and forms a dynamic and static, flexible and changeable film and television picture. The phantom imaging system mainly includes: three-dimensional model, lighting system, imaging system, digital content playback system, host central control system, imaging system and other systems.
全息投影结构也并不复杂，主要有：投影机、中控主机、灯光、反光镜、投影幕等硬件构成，结合数字影片，就可以达到立体式的展示效果。全息投影技术分为叁种空气投影和交互技术、激光束技术、360度全系显示。
The holographic projection structure is not complex, mainly including hardware components such as projector, central control host, light, reflector and projection screen. Combined with digital films, it can achieve three-dimensional display effect. Holographic projection technology is divided into three types: air projection and interaction technology, laser beam technology and 360 degree full system display.
3、从应用上看区别
3. Differences in application
是演示故事发展的一种展示方式，被应用于纪念馆、图书馆、博物馆、科技馆、城市规划馆、娱乐厅、展览会、博览会等展览展会。
It is a way of demonstrating the development of stories. It is used in memorials, libraries, museums, science and technology museums, urban planning museums, entertainment halls, exhibitions, Expos and other exhibitions.
全息投影借助于实景能够成像与半空中的叁维景象相互融合，效果奇幻，科技感十足，应用于娱乐演出、罢台秀、电影、展会展馆、销售等多个行业。
With the help of the real scene, holographic projection can integrate the imaging with the three-dimensional scene in the air, with fantastic effect and full sense of science and technology. It is applied to entertainment performance, T-stage show, film, exhibition hall, sales and other industries.
4、从优势上看区别
4. Differences in terms of advantages
成像幅度大，宽能达到4米，不管是什么样的产物展示都适用，展现出来的效果相当震撼，只需要一个小小的空间就能够的展示，因此在各个场所都能够见到幻影成像产物的演示。
The imaging range is large, and the width can reach 4m. No matter what kind of product display is applicable, the displayed effect is quite shocking. It can be perfectly displayed in only a small space. Therefore, the demonstration of phantom imaging products can be seen in all places.
全息投影技术投影出来的画面立体感很强，清晰度高，色彩鲜明，可以让人沉浸在虚拟印象中，不受场合的限制，可以支持多角度全息投影，通过新颖的方式展现出来。
The picture projected by holographic projection technology has strong three-dimensional sense, high definition and bright color. It can immerse people in virtual impression. It is not limited by occasions. It can support multi angle holographic projection and show it in a novel way.
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