# \#line

**URL:** https://forum.opencv.org/tag/line/81.md

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## [Why draw a line don't produce a line with exact line thickness?](https://forum.opencv.org/t/why-draw-a-line-dont-produce-a-line-with-exact-line-thickness/9674)

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**Author:** [@sn4k3](https://forum.opencv.org/u/sn4k3)\
**Replies:** 5\
**Last updated:** [July 31, 2022, 3:22pm UTC](https://forum.opencv.org/t/why-draw-a-line-dont-produce-a-line-with-exact-line-thickness/9674 "2022-07-31T15:22:18Z")

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I’ve notice that drawing a line does not produce a line with the exact thickness. For example a line thickness of 15px draw a line with exactly 17 px of thickness, why is that? See the following example: line(img, …