Re: Calculation of area with certain color

Posted by Brandon Hurr on Apr 07, 2015; 3:00am
URL: http://imagej.273.s1.nabble.com/Calculation-of-area-with-certain-color-tp5012384p5012385.html

I would recommend 2 things:

Take a better photo:
Looks like you might have the flash on, there is a lot of glare, this will
be difficult to determine its color. I would suggest diffuse lighting that
surrounds your object of interest.

Segmentation
You could start by using the color threshold plugin segment your
green/yellow and then segment your brown/red/orange creating an ROI from
each.

HTH,
Brandon

On Mon, Apr 6, 2015 at 4:01 PM, Popova, Inna ([hidden email]) <
[hidden email]> wrote:

> Hello everyone,
>
>
> I am working on the development of the weed control procedure. We are
> monitoring plant color. Healthy plant is green and damaged plant is
> brown/black. Basically we need to know what is the extend of tissue
> browning.
>
>
> How can I calculate the area of the brown or green color using ImageJ? We
> take picture with point-and-shoot camera.
>
>
> Thank you,
>
> Ina P
>
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> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>

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