Plot a filled black circle on a certain background

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Chen on 10 Aug 2020

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Answered: Image Analyst on 11 Aug 2020

I have a 344*344 grey level image with noise only. Now I want to plot a filled black circle in the middle of that gray image as background.

How can I achieve that? And I hope I can also adjust the size (scale) of the filled black circle in the middle of the image.

Thanks so much!!

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Image Analyst on 11 Aug 2020

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https://nl.mathworks.com/matlabcentral/answers/577885-plot-a-filled-black-circle-on-a-certain-background#answer_477841

See the FAQ: https://matlab.fandom.com/wiki/FAQ#How_do_I_create_a_circle.3F

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