Case Study: Brooklyn

Solving bridge camera tracking paths and fitting matching geometry hulls for VFX integration.

Final Track Render

Camera & Lens Unknown DSLR Camera

Frame Rate 25.00 fps / 24.00 fps

Solve Type Camera Track + Geometry Tracking

Focal Solve Auto-Estimated Focal Solve

Project Target & Shot Conditions

The aim of this project was to track a camera sequence over the Brooklyn Bridge with unknown settings, solve a physical camera path, and model a matching geometry hull for the bridge structure.

Large scale engineering structures present tracking challenges due to the atmospheric distortion over water, perspective changes, and massive scale variation. Modeling a matching geometry hull is essential for projection mapping, lighting checks, and shadow-catching overlays.

Adopted Workflow

Cable Feature Tracking: Tracing fine cable structures and vertical struts along the bridge to establish geometric anchors.
Lens Parameter Solve: Undistorting wide DSLR lens plates to rectify barrel distortion.
Virtual Camera Path Solve: Solving coordinate positions across parallax shifts.
Bridge Geometry Modeling: Reconstructing the bridge pillars and cables in 3D to fit the solved camera path.

Solver Challenges & Solutions

Massive Parallax Shifts: Foreground rails move extremely fast while distant bridge arches stay almost static. Solver weights had to be manually distributed to ensure distant points stabilized the path solve.

Atmospheric Distortion: Heat waves and moisture over the river blur structural details. Color grading and high-contrast filters were applied to utility tracks to lock feature anchors.