5 likes
Invisibility cloak
How does the exhibit work?
Press one of the buttons next to the screen. This allows you to choose whether to take a photo or video.
Take a green object from the bin and hold it in front of you. A part of you will be invisible on the screen .At the end, you will see a QR code. You can scan it to watch the photo or video on your mobile phone. Don't forget to click on download.
What is the science behind it?
This technology is called chromakey and is very popular with weather presenters. They often are in front of a green background during their job. An image of the weather map replaces the green colour. Just pay attention when you see another weather report.After all, the weatherman or woman is not looking behind them. No, they look to the side. There is a television screen there where they can see the weather map.
Here too, we replace something green with an image: an image of the piece of scenery behind it. This makes the object appear transparent. Just test it by holding a green object in front of your body. Did you know that chromakey lets you customise any colour? Green and blue are most commonly used. Why? Because those contrast well with the skin. Unless you're the Hulk, of course.
Chromakey with a bonus
When movie stars have green clothes, it can sometimes cause a problem when shooting with chromakey. That's where Netflix came up with a solution: the 'Magenta Green Screen'.
The film stars are filmed against a background of bright green LEDs. Along the front, they are illuminated with red and blue LEDs. These give the film stars a magenta glow. That way, the software can quickly spot the difference between the film stars and the green background. And with AI, the magenta film stars regain their normal colours. Ready. Set. Action!
Chromakey in the movies
Before they had Netflix's solution, filmmakers had to get creative. Like, for example, in the 2002 'Spider-Man' film. Spider-Man has a red and blue suit. His enemy, the Green Goblin, a green suit. In scenes where they both flew through the air, Spider-Man had to act in front of a green screen and Green Goblin in front of a blue screen. Had they been in front of the same colour, one of them would have been partially transparent.
How does the exhibit work?
Press one of the buttons next to the screen. This allows you to choose whether to take a photo or video.
Take a green object from the bin and hold it in front of you. A part of you will be invisible on the screen .At the end, you will see a QR code. You can scan it to watch the photo or video on your mobile phone. Don't forget to click on download.
What is the science behind it?
This technology is called chromakey and is very popular with weather presenters. They often are in front of a green background during their job. An image of the weather map replaces the green colour. Just pay attention when you see another weather report.After all, the weatherman or woman is not looking behind them. No, they look to the side. There is a television screen there where they can see the weather map.
Here too, we replace something green with an image: an image of the piece of scenery behind it. This makes the object appear transparent. Just test it by holding a green object in front of your body. Did you know that chromakey lets you customise any colour? Green and blue are most commonly used. Why? Because those contrast well with the skin. Unless you're the Hulk, of course.
Chromakey with a bonus
When movie stars have green clothes, it can sometimes cause a problem when shooting with chromakey. That's where Netflix came up with a solution: the 'Magenta Green Screen'.
The film stars are filmed against a background of bright green LEDs. Along the front, they are illuminated with red and blue LEDs. These give the film stars a magenta glow. That way, the software can quickly spot the difference between the film stars and the green background. And with AI, the magenta film stars regain their normal colours. Ready. Set. Action!
Chromakey in the movies
Before they had Netflix's solution, filmmakers had to get creative. Like, for example, in the 2002 'Spider-Man' film. Spider-Man has a red and blue suit. His enemy, the Green Goblin, a green suit. In scenes where they both flew through the air, Spider-Man had to act in front of a green screen and Green Goblin in front of a blue screen. Had they been in front of the same colour, one of them would have been partially transparent.