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Rolling Shutter Skew
Estimate horizontal top-to-bottom displacement from sensor readout time and image motion.
Full-frame readout time (ms): 0–100; Horizontal image motion (px/s): -100000–100000; Image width (px, integer): 1–16384
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Rolling Shutter Skew
Full-frame readout time (ms): 20 Horizontal image motion (px/s): 1000 Image width (px, integer): 1920
- Top-to-bottom displacement (px)
- 20.000000
- Displacement (% of width)
- 1.041667
Assumes a top-to-bottom rolling scan and constant horizontal image motion. Displacement = readout time / 1000 × motion; percentage = 100 × displacement / image width. Use the first-to-last-row readout time for the actual recording mode, not shutter exposure or frame duration. Positive motion means rightward; negative means leftward. Zero readout models a global shutter. Motion and width must use the same pixel scale, before resizing or stabilization. This linear estimate excludes acceleration, rotation, perspective changes, motion blur, wobble and correction processing; it is not a camera quality rating.
Methodology
How it works
Assumes a top-to-bottom rolling scan and constant horizontal image motion. Displacement = readout time / 1000 × motion; percentage = 100 × displacement / image width. Use the first-to-last-row readout time for the actual recording mode, not shutter exposure or frame duration. Positive motion means rightward; negative means leftward. Zero readout models a global shutter. Motion and width must use the same pixel scale, before resizing or stabilization. This linear estimate excludes acceleration, rotation, perspective changes, motion blur, wobble and correction processing; it is not a camera quality rating.
Method and assumptions documented by Techrider.live
2026-11-05
Frequently asked questions
Does a faster shutter remove the skew?
A shorter exposure reduces motion blur but does not by itself shorten the sensor readout. Use the measured or specified readout time for the exact recording mode.