What is Nuke IBK?
Nuke’s image-based keyer (IBK) uses the pixel values of the compositing images, instead of a color-pick, to generate the best matte for the image you want to extract.
What is IBK gizmo?
The IBK keyer differs from many other keyers in that, instead of using a single color picker, it uses an input image (a clean plate with just the color variations of the background) to drive the key. IBKColor creates the clean plate from the blue- or greenscreen image, and IBKGizmo pulls the key.
How would you create a clean plate with the help of IBK color in nuke?
Here is the steps:
- Denoise your plate.
- Create a IBK colour node. Choose your screen type.
- Add a premult after IBK colour.
- Create a Blur node. Change channels to rgba.
- Add un-premult after the Blur node.
- Add some value to the Blur size. Magic, all the blacks will start filling with your screen colour.
What is additive keying?
Adding edge detail with an additive keyer – Nuke Tutorial – [Narrator] The additive keyer is not actually a keyer. It blends the green-screen or blue-screen with the background, providing great edge detail. The idea is to blend the green-screen with the background, like this. That’s the additive keyer.
How do you change the color of a Nuke?
Launch Nuke. Press S over the Node Graph to open the Project Settings, or navigate to Edit > Project Settings. Switch to the Color tab and use the color management dropdown to select OCIO.
Which is color node?
Color nodes deal with color corrections, color space, and color management. Adds a fixed value to a channel to lighten or darken the output. Constrains, or clamps, values in the selected channels to a specified range.