Posted by
Jeremy Adler-2 on
URL: http://imagej.273.s1.nabble.com/Automatized-object-identification-segmentation-of-fish-from-photos-tp5018968p5018970.html
Johannes & Herbie,
Segmentation is clearly very difficult.
But presumably the fish move - it should then be possible to acquire a second image without the fish.
The difference between the two images is - the fish.
-----Original Message-----
From: ImageJ Interest Group [mailto:
[hidden email]] On Behalf Of Herbie
Sent: den 26 juni 2017 14:04
To:
[hidden email]
Subject: Re: Automatized object-identification / segmentation of fish from photos
Good day Johannes,
you may be lucky with some of your images but as you write:
"[...] however the the background is not uniform which might complicate things"
Segmentation will not be satisfying in most cases, with images such as the second example image.
Please note that it is very hard and sometimes even impossible to remedie problems by image processing and analysis that are due to insufficient image acquisition.
Why not isolate every fish in a small aqurium with suitable background?
Regards
Herbie
:::::::::::::::::::::::::::::::::::::::::::::::
Am 26.06.17 um 12:31 schrieb Johannes Radinger:
> Hi ImageJ users,
>
> I am very new to ImageJ and not at all familiar with the capabilities
> of this tool-set. What I'd actually like to do is to extract a fish
> from a photo, i.e. separate the fish from its background. And as I
> want to do this for many images I am looking for an automatized way. The images look like:
>
>
http://fishbase.org/photos/PicturesSummary.php?ID=4730&what=species>
http://fishbase.org/photos/PicturesSummary.php?StartRow=0&ID=4662&what> =species&TotRec=5
>
> Is it generally possible to detect the fish as an object and to select it.
> I thought about some kind of image segmentation, however the the
> background is not uniform which might complicate things. Two things
> are fixed: 1) There is always only one fish, so the final result
> should contain one fish and one background 2) The fish is always more
> or less centered within the image.
>
> Any ideas?
>
> /Johannes
>
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