[Qgis-user] counting fish

[Adam Dershowitz]

Computer vision is not an easy task.  You might look into OpenCV as one way to get started:
http://opencv.org


--Adam



> On Feb 6, 2017, at 12:13 PM, Jake Maier <j.m at jmforestry.com> wrote:
> 
> <image001.gif>
> Is there an easy way, even an existing plugin, to identify photos which show an object (fish)  swimming over a white board.
>  
> I live on a river and there is a potential problem with alewives, an extremely important fish in the food chain. I’d like to find a way with a wildlife camera to take a photo at regular intervals over 3 week. The more photos I can handle (possibly thousands) the more accurate my count. 
> 
> I was hoping to find an automated way to identify those photos which show an object on the whitish background. I thought it should be possible to just look at the average gray value of the photo.
>  
> Is there a fairly easy way to do this?
>  
> Thanks for any help.
>  
> Jake
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