Rolling Shutter Workflow

There are two workflows for handling plates with rolling shutter artifacts:

  • The first workflow is to remove the artifacts from the shot. In this scenario the final composite uses the corrected plate.
  • The second workflow is to add rolling shutter to the CG to match the plate. In this scenario the final composite uses the original uncorrected plate.

 

WORKFLOW 1
rswb

1. original plate
2. remove rolling shutter
3. remove lens distortion (undistort plate)*
4. camera tracking/matchmove
5. cg pipeline (undistorted)
6. render cg with overscan (undistorted)**
7. distort cg render
8. composite over unrolled plate

* Step 3 assumes a lens distortion grid was photographed or lens mapping data was acquired. Step 3 is often part of step 4. Camera tracking software can calculate lens distortion from most plates.

** Step 6 is required when undistorting barrel distortion. If overscan is not rendered the edges of the frame will be cropped when distortion is applied.

 

WORKFLOW 2
rsw

1. original plate
2. remove rolling shutter
3. remove lens distortion (undistort plate)*
4. camera tracking/matchmove
5. cg pipeline (undistorted)
6. render cg with overscan (undistorted)**
7. distort cg render
8. add rolling shutter
9. composite over original plate

* Step 3 assumes a lens distortion grid was photographed or lens mapping data was acquired. Step 3 is often part of step 4. Camera tracking software can calculate lens distortion from most plates.

** Step 6 is required when undistorting barrel distortion. If overscan is not rendered the edges of the frame will be cropped when distortion is applied.

 

Wikipedia: Rolling Shutter
RED – Learn: Global and Rolling Shutters
RED – Learn: Temporal Aliasing with Cinema
RED – RED MOTION
Tessive: Time Filter
Tessive: Time Filter Technical Explanation
DIY Photography: Everything You Ever Wanted To Know About Rolling Shutter
Rolling Shutter on CMOS
Adobe After Effects: Rolling Shutter Repair
Adobe Premiere Pro: Rolling Shutter Repair
SynthEyes Rolling Shutter Tutorials
3DEqualizer4 [advanced] – Rolling Shutter
3D Equalizer: Rolling Shutter Correction in 3DE4
The Foundry: Rolling Shutter (Defunct)