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Simulate a large crowd using live-action footage of a small group of people, 3D renders, and Photoshop artwork.
VFX Techniques introduces common yet critical visual effects techniques that are used in film and television shows on a regular basis. This installment shows how to simulate a large crowd by combining live-action footage of a small group of people, 3D renders, and Adobe Photoshop artworkâtransforming an otherwise empty building into a rapt audience. Author Lee Lanier uses After Effects to set up image sequences, apply motion tracking to match the motion of the original camera, and key green-screen footage. Finally, you'll learn how to make all the elements cohesive with color correction and lighting techniques.
Overview
Syllabus
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Introduction
- Welcome
- Using the exercise files
- The breakdown of the final composition
- Reviewing image sequences
- Setting up the project in After Effects
- Removing camera jitter
- Motion tracking CG renders
- Integrating CG renders
- Adding multiple trackers
- Adding artwork and renders
- Utilizing corner pin tracking
- Looking closer at corner pin tracking
- Creating light effects
- Keying with Keylight
- Motion tracking greenscreen
- Applying tracks to multiple layers
- Solving bad matte edges
- Creating fake reflections and parallax
- Utilizing prerendering and precomps
- Rotoscoping greenscreen
- Employing multiple keyers
- Applying matte tools
- Adding lens blur
- Using Color Range and Matte Choker
- Balancing the saturation and brightness of elements
- Changing clothing and hair color
- Relighting in the composition
- Finalizing the composite
- Adding audio and rendering
- Looking at the final scene
- Next steps
