Segmentation of B/W image

Hi, I want to segment out the bone-discs of the Given image Im2bw etc but not getting the disc seperated can Anyone help me out in this?? have tried almost everything from changing the contrast of the image then gray leveling, imsharpen can anyone help me out in this question??

The Given image is-

TIA

[KALYAN ACHARJYA]

"segment out the bone-discs of the Given image"

Can you show us the ROI (use paint or any image editing tool)?

Answer 1

[Subhadeep Koley]

It is difficult to exactly segment out only the bone-disc area using standard segmentation techniques. The following function might help you.

function [BW] = segmentImage(X)
% X = Input image
% BW = Output binary mask for segmentation
% Auto clustering using K-means algorithm
s = rng;
rng('default');
L = imsegkmeans(single(X),2,'NumAttempts',2);
rng(s);
BW = L == 2;
% Open mask with rectangle
dimensions = [7 7];
se = strel('rectangle', dimensions);
BW = imopen(BW, se);
% Fill holes
BW = imfill(BW, 'holes');
end

Fig 1. Original Image Fig 2. Binary mask for segmentation