How to get the mean value of the area around certain coordinates of an image?

Hi, I am writing a code to analize all the frames of a video. I have already split the video on its frames. To simplify my question lets take a single grey scale image.

I have an image. I have a mesh of points (with their coordinates). The mesh is a regular square mesh. I would like to get the average value in the area around each of these points. And if it is posible to have these mean values in a matrix.

How do you recomend me to do it?

Thank you in advance.

[KSSV]

An exampl eimage with the mesh which you are talking would help to understand.

[ferran parera]

Hi, I attach the image and the mat file where the x y coordinates of each point can be found as matrix.

The area to do the average arround each point could be x-15 to x+15. And y-15 to y+15.

If you need any other infromation just ask me.

Thanks for your help.

Answer 1

[Image Analyst]

Use imfilter() or conv2():

kernel = ones(31); % center plus 15 to all sides.
averageImage = conv2(grayImage, kernel, 'same');

[ferran parera]

It worked well, Thank you a lot.

Ferran