Need code for conversion of an image

hi, i need source code on how to convert the first image to second image. i did try used median filter but it doesn't worked. hope there is solution to my problem.

Answer 1

[KALYAN ACHARJYA]

Here supposed to be group certain pixels in one group (read about qualtization levels). Same can be done using imsegkmeans function, which is K-means clustering based image segmentation

k=8; % Change the kth value as per requirement, number of segments
[L,C]=imsegkmeans(I,k);
result=label2rgb(L,im2double(C));
imshow(result);

[Nauratul Suqda]

thank you for the code sir.

[KALYAN ACHARJYA]

:)