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Un -Polar Co-Ords

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Un -Polar Co-Ords Marcwolf 17 Aug 11:28
  Un -Polar Co-Ords Ofnuts 20 Aug 00:15
   Un -Polar Co-Ords Marcwolf 20 Aug 00:29
Marcwolf
2015-08-17 11:28:53 UTC (over 8 years ago)
postings
2

Un -Polar Co-Ords

HI.

I know that Filters -> Distorts - > Polar allows you to take a rectangular image and curve it into a polar co-ord view.

But is there anyway one can do the opposite.

For example - I have an image of an eye.. The Iris and Pupil are circular.

What I want to do is to 'cut' it along a radius and then to fold it out so it becomes a rectangle.

So that the pupil is at the bottom and the edge of the iris is at the top. The original image being 128 x 128 pixels high but the new image being 128 x 408

Many thanks Dave

Ofnuts
2015-08-20 00:15:04 UTC (over 8 years ago)

Un -Polar Co-Ords

On 17/08/15 13:28, Marcwolf wrote:

HI.

I know that Filters -> Distorts - > Polar allows you to take a rectangular image and curve it into a polar co-ord view.

But is there anyway one can do the opposite.

For example - I have an image of an eye.. The Iris and Pupil are circular.

What I want to do is to 'cut' it along a radius and then to fold it out so it becomes a rectangle.

So that the pupil is at the bottom and the edge of the iris is at the top. The original image being 128 x 128 pixels high but the new image being 128 x 408

Many thanks Dave

Attachments:
* http://www.gimpusers.com/system/attachments/210/original/green.bmp

If you un-check "To polar" this is what it does?

Marcwolf
2015-08-20 00:29:17 UTC (over 8 years ago)
postings
2

Un -Polar Co-Ords

If you un-check "To polar" this is what it does?

Ahhhh... Right. Thats works.
Many many thanks for your help :)

Marc