Green Screen. Objectives: 2. Understand what the difference is between a Luma key and a Chroma key. By the end of todays lesson students will: 3. Understand.

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Presentation transcript:

Green Screen

Objectives: 2. Understand what the difference is between a Luma key and a Chroma key. By the end of todays lesson students will: 3. Understand the difference between the foreground and background layers of a green screen effect. 1. Understand what a key is

E.Q How can we use green screen when we create and edit a video?

Green Screen A green screen allows you to shoot video in front of a screen that is one color ( green, blue, red). Then remove that color to see whatever image is placed on the background layer.

Key: Keying in on one color or luminance level and removing it from the image.

Chroma Key: A chroma key is an effect that allows you to remove all of one selected color from an image. Chroma: saturation of a color

Luma Key: A luma key is an effect that allows you to remove shades of black and white from an image. Luminance : brightness Play video

Foreground and Background : When working with a green screen your working with two layers of video.

Foreground and Background : Foreground This is the layer the key will be applied to

Foreground and Background : Background This is the layer that will show through where the green is. Play Green Screen tricks