> For the complete documentation index, see [llms.txt](https://wiki.hanzheteng.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.hanzheteng.com/algorithm/cv/shutter.md).
# Shutter
### Global Shutter
* all pixels in a frame are exposed to light at the same time
* mostly supported by CCD image sensor (one read per frame)
### Rolling Shutter
* pixels are read and stored line-by-line in a frame
* mostly happens as the side effect of CMOS sensors
#### Example image in the presence of rolling shutter effect.
#### Example video in the presence of rolling shutter effect (also called "jelly" effect).
Three factors contributing to this jelly effect:
* The camera is a rolling shutter camera
* The camera is rigidly attached to a quadrotor (without gimbal)
* The quadrotor frame by itself has high frequency vibration (without damping design)
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