center of gravity calculation from a dfiffraction limited spot

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Gift 2021-2-23

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https://ww2.mathworks.cn/matlabcentral/answers/753774-center-of-gravity-calculation-from-a-dfiffraction-limited-spot

回答： darova 2021-3-2

I will like to calculate the center of gravity from arrays of spots from a png file. How can I go about it?

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darova 2021-2-23

Did you try regionprops? Please attach the image

Gift 2021-2-24

Doc2.pdf

Thank you for your response. No, I did not use regionprops. Kindly find attached the image. If possible,I will also like to get the deviation of the spots.

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Answer 1

Bhomik Kankaria 2021-2-27

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https://ww2.mathworks.cn/matlabcentral/answers/753774-center-of-gravity-calculation-from-a-dfiffraction-limited-spot#answer_634744

Hi,

Center of gravity can be calculated using 'regionprops' function from Image Processing Toolbox. You can use centroid as property name to calculate center of gravity in a image.

To know more about the function regionprops, refer to the link below -

https://www.mathworks.com/help/images/ref/regionprops.html

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Gift 2021-3-1

Doc2.pdf

Thank you for yoor rsponse. Please I am new to programming. can you kindly write a code on how it can be done. i.e the COG calculation and the lateral resolution

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