# Eye calibration

**URL:** <https://mworks.discourse.group/t/eye-calibration/315>\
**Category:** Support\
**Created:** [July 20, 2018, 2:00pm UTC](https://mworks.discourse.group/t/eye-calibration/315 "2018-07-20T14:00:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![cstawarz](https://yyz1.discourse-cdn.com/flex031/user_avatar/mworks.discourse.group/cstawarz/32/3_2.png) [@cstawarz](https://mworks.discourse.group/u/cstawarz)\
**Post date:** [July 20, 2018, 2:00pm UTC](https://mworks.discourse.group/t/eye-calibration/315/1 "2018-07-20T14:00:09Z")

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Hi Chris,

Would it be possible to modify the 9-point calibration to 3-point calibration? 3 points should still be enough to get a reasonable fit to start with. It would provide a smoother transition from monkey barely fixating at one point to fixating at all 9 points.

Thanks,

–  
Sujay

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**Author:** ![cstawarz](https://yyz1.discourse-cdn.com/flex031/user_avatar/mworks.discourse.group/cstawarz/32/3_2.png) [@cstawarz](https://mworks.discourse.group/u/cstawarz)\
**Post date:** [July 20, 2018, 2:16pm UTC](https://mworks.discourse.group/t/eye-calibration/315/2 "2018-07-20T14:16:38Z")

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Hi Sujay,

The [standard eye calibrator](https://mworks.github.io/documentation/latest/components/eye_calibrator.html) fits a second-order function that has six parameters, so you need at least six samples to perform a fit. However, the [linear eye calibrator](https://mworks.github.io/documentation/latest/components/linear_eye_calibrator.html) fits a first-order function with three parameters, so three samples would be sufficient to get a fit with it.

Cheers,  
Chris

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**Author:** ![cstawarz](https://yyz1.discourse-cdn.com/flex031/user_avatar/mworks.discourse.group/cstawarz/32/3_2.png) [@cstawarz](https://mworks.discourse.group/u/cstawarz)\
**Post date:** [July 19, 2022, 9:43pm UTC](https://mworks.discourse.group/t/eye-calibration/315/3 "2022-07-19T21:43:48Z")

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