To remove unwanted parts in an image

I ran a code to remove to unwanted parts in an image but it does not fully remove the unwanted parts i want.

How do i remove the rest unwanted parts?

the code i ran -

%Filling holes
image_holes = imfill(image_bw,'holes');
%Removing unwated parts
P = sum(image_holes(:));
image_wanted=bwareaopen(image_holes,P/2);
%Image filtering
image_filter = uint8(double(image_original).*repmat(image_wanted,[1 1 3]));
imshowpair(image_original,image_filter,'montage'); 

[KSSV]

What do you mean by removing here?

[Aye Thein Maung]

By removing i meant filtering out all other parts except the main image itself

[Akira Agata]

How about using inpaintCoherent function?

Answer 1

[Image Analyst]

I probably would have suggested regionfill

mask = grayImage == 255;
grayImage = regionfill(grayImage, mask);

but I like @Akira Agata's suggestion of inpaintCoherent better.