Locate circular objects and integrate their intensity in noisy background
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Hi everyone,
I have a noisy image of a SnO2 nanoparticle in projection. Sn atoms have a higher intensity and O atoms a weaker one.
Firstly, I would like to locate the O atoms on the surface (edge) of the nanoparticle adjacent the noisy background (vacuum) (in red box).
Secondly, I would like to create a circular mask of known width in pixels around each O atom and finally calculate their average intensity.
The best output would be the coordinates of the atoms and their corresponding average intensity and an image showing the atom indices.![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/561298/image.jpeg)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/561298/image.jpeg)
Your help in any way is appreciated,
Arthur
(A version of the image without the red box is also attached.)
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