i have an image and i want to filter it to avoid noises inside it and make it pure

hello , i have this image attached and i want to filter it to make it perfect

how can i do that??

thanks in advance

[jonas]

Is there a formal definition of a perfect or pure image that I am missing?

[Mohannad Nasir]

no , but i want to filter this image so can it have the whole disc in the original picture which is this one

[jonas]

so you want to somehow fit a perfect circle to your blob? I have seen this optical disc several times on this forum, and I have a vague memory of Image Analyst already providing some code for fitting a circle to the disc.

[Mohannad Nasir]

so inside image analyst i can find how can i fit it properly ??

[Mohannad Nasir]

but i search and i did not find this one , can you please write a filter function for me ?

[jonas]

that's not what I said. Try googling something like

site:www.mathworks.com optical disc

and you will find tons of questions on the same subject