ImageEn Forum - Concave hull for image separation

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Concave hull for image separation

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PStadler

Austria
60 Posts

Posted - Jul 08 2017 : 04:41:18

Hello,
For image separation concave hull algorithm is necessary, because not all objects are convex.

I am searching a delphi translation of a Concave hull algorithm. It was developed by a portuguese institute here in Mathematica.
http://repositorium.sdum.uminho.pt/bitstream/1822/6429/1/ConcaveHull_ACM_MYS.pdf

Later it was translated into C#.

Has anybody made a translation to delphi? For ImageEn it would be very helpful for image analysis.

Sincerely

Peter

PStadler

Austria
60 Posts

Posted - Jul 09 2017 : 03:10:58

Hello,

I found the most recent implementation http://andriiheonia.github.io/hull/.

It is written in javascript.

So my question still is: Has anybody translated it to delphi?

I would also pay for a translation. There are only in total 358 lines of source code.

Sincerely

Peter

PStadler

Austria
60 Posts

Posted - Feb 27 2018 : 03:26:26

Hello,

I found now an implementation of the concave hull in c++.
https://www.codeproject.com/Articles/1201438/The-Concave-Hull-of-a-Set-of-Points

It uses also the Flann library.

Has anybody installed it in Embarcadero C++Builder?

Sincerely Peter

Stolte

Germany
1 Posts

Posted - Jan 18 2019 : 11:32:32

Hi Peter,

i noticed you question also in the embarcadero forum.
I am having the exact same problem. I can not find a delphi/pascal implementation of the concave hull algorithm.
Did you ever find one?

Regards,
Manuel

PStadler

Austria
60 Posts

Posted - Jan 18 2019 : 11:38:26

Sorry, not yet!

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