Dancer was shot in front of a simple blue and green screen.
Step 2
Garbage Masks
Garbage masks were made around uneeded or difficult spots in the frame.
Step 3
Green Key
The green screen was keyed.
Step 4
Blue Key
The Blue screen was keyed.
Step 5
Alpha Channel
The alpha channel of the image was isolated. The image was also flipped horizontally.
Step 6
Live Background Plate
The background plate was shot.
Step 7
Final Composite
An adjustment layer was created to match the real shoadow in the background plate. This adjustment layer used an alpha matte of the alpha channel of the foreground image. This layer was
then scaled, positioned, feathered, and motion blurred to make the final composite.