Why do we use green cloth for special effects shots?

This is to cut out the background. Green rarely appears on characters, so it is easier to pick it out and replace it with another scene. You will find that whenever a green background is used, the actors will never wear green clothes. In fact, blue ones were also used in the earliest times.

Why do the scenes before shooting special effects in movies or TV series have to be in a green background?

This is mainly to distinguish the background from the foreground, so as to facilitate post-cutting and adding computer special effects.

But there are also times when a blue background cloth is used. To give two examples, for example, if you need to shoot military-related shots, the soldiers wear green military uniforms and are painted with green camouflage patterns; this condition Next, you need to choose a blue background screen; for another example, future science fiction-themed shots use a lot of blue, so you need to consider using green as the background.

As for why only these two colors are used, the more authoritative theoretical explanation is:

The basic structure of film is composed of three layers: red, green, and blue. Red, green, and blue are all acceptable as background colors. Blue is frequently chosen for several reasons: blue is the complementary color of our skin, and in most scenes, the hue is similar to skin color; it is a logical choice to use the opposite color and ignore the use of similar colors. Historically, movie cameras and film were very sensitive to blue light, but from today's perspective, these views are not very accurate.

Green has its own advantages. There is obvious adaptability when working on the mask part when there are blue objects in the foreground. Green has a significant reflectance and is easier to draw than blue during masking. At the same time, video cameras are normally more sensitive to the green channel, and the best resolution and picture details are generally in the green channel.

Therefore, generally technology blockbusters with strong special effects use green background cloth!

Why is it necessary to put green cloth in the background when shooting special effects movies?

This is mainly to distinguish the background from the foreground, so that it can be cut out later and add computer special effects.

But there are also times when a blue background cloth is used. To give two examples, for example, if you need to shoot military-related shots, the soldiers wear green military uniforms and are painted with green camouflage patterns; this condition Next, you need to choose a blue background screen; for another example, future science fiction-themed shots use a lot of blue, so you need to consider using green as the background.

As for why only these two colors are used, the more authoritative theoretical explanation is:

The basic structure of film is composed of three layers: red, green, and blue. Red, green, and blue are all acceptable as background colors. Blue is frequently chosen for several reasons: blue is the complementary color of our skin, and in most scenes, the hue is similar to skin color; it is a logical choice to use the opposite color and ignore the use of similar colors. Historically, movie cameras and film were very sensitive to blue light, but from today's perspective, these views are not very accurate.

Green has its own advantages. There is obvious adaptability when working on the mask part when there are blue objects in the foreground. Green has a significant reflectance and is easier to paint than blue during masking. At the same time, video cameras are normally more sensitive to the green channel, and the best resolution and picture details are generally in the green channel.

Therefore, generally technology blockbusters with strong special effects use green background cloth!

Why do we use green cloth for special effects shots?

The green background is for the convenience of cutting out images.

Why do we use blue or green background cloth when shooting 3D special effects?

It facilitates keying of characters and post-processing. Because blue and green are rarely seen in movies and form a sharp contrast with the actors' clothes, so using these two colors as background colors will make the keying more complete and clean.

Why use a green background for special effects?

To put it simply, it is for keying. Blue and green are the least common colors in most human beings. They almost only exist in the pupil colors of some Europeans, that is, those with blond hair, blue eyes, etc., so they choose mostly blue and green, among which green There are fewer people than blue, so green is used more than blue. Picture and video keying is basically like a PS magic wand, which directly selects a large area of ??color and then replaces it with other background materials. If a normal Chinese person stands in front of a piece of green cloth, there will be no clothing at all. Green, then the cutout will be very clean, and only your entire human shape will be retained. If you wear a green long-sleeved coat, then you will have no body during the cutout, only your head and hands, and those replacement background materials Just replace your green clothes and you will be transparent

Why are special effects shots shot on green cloth?

First of all, it does not have to be green cloth. As long as the foreground contrast is very high - solid color can be considered. For convenience, remove the background.

If you need to remove the background in photography or movies, why do you use it? What about blue cloth or green cloth as the background? What are the benefits of this?

General movie post-production software has a function that allows you to cut out the required parts from the blue or green background, and then easily replace it with the required background, such as the last scene in the movie Myth The scene where Jackie Chan and Kim Hee Sun were flying in the air was made using this. The specific principle is not very clear, maybe it is easier during filtering.

Anyway, I have done it, and it is very easy to use software to cut out images on a blue-green background.

Why do you need to use "green" as the background when shooting computer stunts?

"Keying" or "keying technology" is a widely used technical means in the field of film and television production, and its implementation method It is also commonly known that when you see actors performing in front of a green or blue background, but these backgrounds are not seen in the final film, it is the use of keying technology to replace it with other background images. If you change the color of blue or green, this is called "keying". Of course, "keying" does not only use blue or green, as long as it is a single, relatively pure color, but the greater the contrast with the actor's suit and skin color, the better, so keying is easier to achieve. If it is real-time "keying", you need a video switcher or a video capture card that supports real-time chroma keying. But the price is relatively expensive, and individuals are basically unable to afford it.

Why do we use green cloth when making movies? Instead of using other colors of cloth.

You can use cloth of other colors. Green cloth is used because foreigners have blue eyes. When doing stunts, human eyes are used. Green or blue cloth is commonly used in China. We are Mongolian and have brown eyes