What It Does
BAO Perspective Changer maps a source image from one perspective to another using homography, a mathematical transformation that preserves straight lines. Unlike standard corner pin effects, it computes distortions before image sampling, which eliminates quality loss.
The plugin works by defining two sets of four points: selection points mark the original perspective, and transformation points define the target perspective. It’s comparable to using Photoshop’s Vanishing Point feature combined with 3D layer movement, but everything happens directly in After Effects.
Key Features
No definition loss. The plugin calculates both perspective distortions before sampling the image, preserving maximum quality through the transformation.
Direct point control. Drag four selection points to define the source perspective, then position four transformation points for the output. No camera setup required.
Time-varying perspectives. Animate perspective changes on videos or compositions. All points support keyframing and expression control for integration with tracking data or 3D workflows.
Geometry adjustments. Modify geometry in either the selection or transformation perspective space.
Mask conversion script. Convert between masks and perspective points, or vice versa, for easier setup from existing assets.
GPU acceleration. OpenGL-based rendering keeps preview and render times fast, even with complex perspective animations.
Expression-driven workflow. All selection and transformation points can be controlled via expressions, making it useful for automated setups or connecting to tracking data.
Who It’s For
This plugin suits VFX artists and compositors who work with perspective correction, particularly when inserting graphics onto surfaces or correcting architectural distortion. It’s useful for screen replacements, billboard inserts, or any scenario where you need to map content onto a plane at a different angle without degrading quality. Motion designers animating perspective shifts on text or graphics will find the time-varying capability helpful.
Pricing
BAO Perspective Changer costs $29.99 for a single user license. The plugin is compatible with After Effects CS5 through 2024, including M1 Macs. A trial version is available from the aescripts website.