[Scilab-users] need help with image post processing

[Stéphane Mottelet]

Hello,

Maybe this is not relevant, but if the green region is garanteed to be 
always simply connected, you just have to fill holes in your 
absdiff(G,B) image (imfill function in IPCV).

S.


Le 15/07/2020 à 17:58, P M a écrit :
> Dear Scilab community,
>
> Thanks to Antoine's functions I am able to read tif-files as M x N x 
> Channel - matrix.
>
> Px values are:
>
> red       =>  255, 0, 0
> green =>  0, 255, 0
> black =>  0, 0, 0
> white =>  255, 255, 255
>
> Now:   I want to only keep the green pixel values.
> This can be done due to:  G = img(:,:,2);
>
> However, this plane does also include the white pixels, since white 
> has a pixel value of 255 in the green plane.
> This is Ok, as long as the white pixels are surrounded by the green area.
>
> However there are also white pixels in the red and black area.
> These white pixels should be set to 0.
>
> I started to work with differential images , but somehow I can not get 
> around the problem.
>
> Please find below an example of my output.
>
> upper line:    RGB; R-plane; G-plane ; B-plane
>
> As you can see, the G-plane contains white pixel (2 dots), which are 
> within the red-area
> The desired output would be to have the G-plane without the 2 dots.
>
> Any Idea?
>
> Best Regards,
> Philipp
>
>
>
> grafik.png
>
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-- 
Stéphane Mottelet
Ingénieur de recherche
EA 4297 Transformations Intégrées de la Matière Renouvelable
Département Génie des Procédés Industriels
Sorbonne Universités - Université de Technologie de Compiègne
CS 60319, 60203 Compiègne cedex
Tel : +33(0)344234688
http://www.utc.fr/~mottelet

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