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Segmenting lung nodules from Chest X-ray images

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Rida Memon
Rida Memon on 30 Mar 2020
This is my code. It is almost accurately segmenting out the lung regions from chest x-ray images. But i need to write a logic that also segments out those blobs only that are candidate nodules. I also have ground truth for the nodule's size and location in the image.
clear; clc; close all;
%% Loading images
Threshold = 36;
raw_x_ray='JPCLN014.png';
I=imread(raw_x_ray);
figure(101);
imshow(I);
colormap(gray);
title('Grayscale X-Ray');
I=wiener2(I, [5 5]);
figure(102);
subplot(2,1,1);
imshow(I);
subplot(2,1,2);
imhist(I, 256);
a_thresh = I >= Threshold; % set this threshold
[labelImage, numberOfBlobs] = bwlabel(a_thresh);
props = regionprops(a_thresh,'all');
sortedSolidity = sort([props.Solidity], 'descend');
SB = sortedSolidity(1);
if SB == 1
binaryImage = a_thresh; figure(103);
imshow(binaryImage); colormap(gray);
The image needs to be flipped first. Nodule's size is 20mm for this image, (569,717) are the coordinates, the nodule is in the right upper lobe (S3) and is malignant (lung cancer diagnosed).

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