# Log-polar transform of an image

**URL:** <https://discourse.julialang.org/t/log-polar-transform-of-an-image/52004>\
**Category:** General Usage\
**Created:** [December 17, 2020, 6:38pm UTC](https://discourse.julialang.org/t/log-polar-transform-of-an-image/52004 "2020-12-17T18:38:35Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![rveltz](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rveltz/32/2707_2.png) [@rveltz](https://discourse.julialang.org/u/rveltz)\
**Post date:** [December 19, 2020, 12:32pm UTC](https://discourse.julialang.org/t/log-polar-transform-of-an-image/52004/6 "2020-12-19T12:32:43Z")

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> it is inevitable to have leftovers in this type of log-polar mapping,

Yes, but if you apply the rotation transform, it fills the unknowns with black. Cant we do the same here?

> _PS: btw, why the logarithm is not used in your definition?_

I could not get it work so I focused first on the polar one.

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