How can I create dots on a blank image created using zeros?

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Fidessa Isiko
Fidessa Isiko 2020-8-22
评论： Image Analyst 2020-8-23
I want to creat a black image with white circular spots on it, where I can edit the size of the spots.

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Walter Roberson
Walter Roberson 2020-8-23
https://matlab.fandom.com/wiki/FAQ#How_do_I_create_a_circle.3F
zeros() would create the black image for you. You would then use one of the techniques for creating circles that you would set to 1 (white).
Alternately you could use insertShape from Computer Vision Toolbox.
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Image Analyst
Image Analyst 2020-8-23
Or you could call "hold on" and call plot() then call exportgraphics() to save the image with spot on it to disk.

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