# Is velocity information filtered?

**URL:** <https://community.stereolabs.com/t/is-velocity-information-filtered/603>\
**Category:** Uncategorized\
**Created:** [October 25, 2021, 1:41pm UTC](https://community.stereolabs.com/t/is-velocity-information-filtered/603 "2021-10-25T13:41:42Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jralves93](https://community.stereolabs.com/letter_avatar_proxy/v4/letter/j/ec9cab/32.png) [@jralves93](https://community.stereolabs.com/u/jralves93)\
**Post date:** [October 25, 2021, 1:41pm UTC](https://community.stereolabs.com/t/is-velocity-information-filtered/603/1 "2021-10-25T13:41:42Z")

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About Zed 2i: Does the velocity information (vector) about a detected person gets filtered by kalman filter (or other), or is it just raw velocity using difference between two frames?

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**Author:** ![Myzhar](https://community.stereolabs.com/user_avatar/community.stereolabs.com/myzhar/32/11_2.png) [@Myzhar](https://community.stereolabs.com/u/Myzhar)\
**Post date:** [October 25, 2021, 2:48pm UTC](https://community.stereolabs.com/t/is-velocity-information-filtered/603/2 "2021-10-25T14:48:17Z")

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Hi @jralves93  
it’s filtered. The state of each detected object is estimated by a Kalman Filter.