http://imagej.273.s1.nabble.com/Convex-Hull-BG-a-new-background-subtraction-algorithm-tp5016900p5016909.html
I created a Github repository with the sources for the plugin. Besides the
repository. This is because I am a new 'push'-user of github and still
> Hi Koen,
>
> the convex hull is a good background subtraction algorithm if the
> background is convex, which is usually the case in brightfield light
> microscopy. Unfortunately I could not try your plugin (I don't have Java
> 1.8).
>
> I think that the concept is not entirely new, this paper describes a
> similar approach (though different implementation):
>
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3433711/>
> You can do something that comes very close to it with ImageJ:
> In 'Subtract Background', select 'Sliding Paraboloid' and a very large
> radius (1000000 does not hurt). This gives a reasonably good approximation
> of the convex hull. (It is an approximation not only because the radius is
> finite but more so because it simplifies the problem from 2D to several
> passes of 1D lines across the image, for increased computing speed).
>
> For color images you should have 'Separate Colors' enabled, then you don't
> need to do the detour via a composite image.
>
> Michael
> ________________________________________________________________
>
> On 2016-07-17 16:10, Koen van dijken wrote:
>
>> Hi fellow ImageJ users,
>>
>> Last week I've been programming a background subtracter which is based on
>> another algorithm which I devised myself. I have not heard of it before.
>> It
>> is based on building a 3D Convex Hull over the image's intensity profile.
>>
>> I created a document about the motivation for building it, its workings,
>> its characteristics, how to use etc. Because the listserver will not let
>> me
>> attach pdf's, here is a link to it on my dropbox:
>>
>>
https://www.dropbox.com/s/rubady3rv9yyxdv/Convex%20Hull%20BG.pdf?dl=0>>
>> Because gmail will not let me attach jars, here is a link to it on my
>> dropbox:
>>
>>
https://www.dropbox.com/s/1pxbney44su19e6/Convex_Hull_BG-0.9.jar?dl=0>>
>> Have fun trying it, and if you find any issues with it, please mail.
>>
>> Koen van Dijken
>> Groningen, The Netherlands
>>
>> --
>> ImageJ mailing list:
http://imagej.nih.gov/ij/list.html>>
>>
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