How can you be invisible in China?
Sihainet: does the invisibility cloak really exist? Recently, however, it is said that a video of my father wearing a domestic 'invisibility cloak' has caught fire. There is a rumor on the Internet that he is wearing a 'quantum invisibility cloak'. What's the matter? What is the transparent clothes that I wear?
An old man is holding a cloth with invisible function. When the cloth blocks the body, the man really disappears, only the flowers and grass behind him can be seen. It's said that this is the "homemade quantum invisibility cloak" invented by the teachers of Zhejiang University. Some netizens also say that this is the "mysterious power" from China. Others say that "magic" is just & hellip; hellip; is there really a invisibility cloak? How can people disappear from the sky?
After watching this video, a professional of a video production company denied the above speculation, saying that this is a video synthesized through post matting technology, and many post compositing software can make such an effect. And explain the principle of making this video:
For the first time, shoot the pure background of no one.
The second time, the character takes the green cloth to shoot again.
Then, we use the software to cut off the green cloth and synthesize the two videos to create the effect of "invisibility cloak".
Similar technology has been widely used in movies
There are some flash points on the invisible cloth on the video, in fact, they are the location points on the matting image, which are used for tracking.
In addition, the video also has a 'pass through lens'. Some netizens said that in the video, the old man's' kicking leaves are shaking, but Bree's leaves are not shaking, revealing the stuffing '. This also proves that the video is a combination of two videos.
In fact, this kind of "invisibility cloak" video spreads a lot on the Internet. For example, in the moving picture below, a father filmed a video of "invisibility cloak" for his child. At the end of the video, the "invisibility cloak" shows its original shape, which turns out to be a green cloth.