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How to extract Foreground from Green Screen without having Edge issue in Nuke

1. These are my notes about how to extract Foreground  from Green Screen without having Edge issue.

girl2_all_only

2. To key out the  Green Screen using Keylight. The Keylight seems to be more powerful and you can come up with some really good results.

keylightNode

keyLightPara

Then the image looks like this:

keylightImage

3. Add Background

girl2_bg

girl2_bg_ealier

Because of how we multiplied the black background in the process we did earlier it left black edges on her arm. So let’s take of this problem.

girl2_bg_closer

4. To make an Edge Matte for Mixing the background to the Edge of the Girl.

EdgeMatte

 

Blur Node – size 100

EdgeMatte_blur

Merge -Xor

EdgeMatte_merge

Grade – Multiply 4

EdgeMatte_grade

The resulting Image of the final Alpha Channel:

EdgeMatte_alpha

5. Added Background Image to the FG using the mask we just created. Add IN with the FG and another IN for BG

EdgeMatte_BG

The resulting Image

EdgeMatte_BG_image

6. Final

girl2_final_node

The Edge of the girl is mixed with the background

girl2_final_image