Hello I have problems detecting the edges of carotid artery in the image .Please help

%Carotid Artery Segmentation and Interpolation
%Read an image
fullname = get_full_filemane(C:\Users\Min\Desktop\Clinical data\Normal(Age20)\1.KIMJEONGMIN\1);

Invalid use of operator.

Error in connector.internal.fevalMatlab

Error in connector.internal.fevalJSON

I = imread('Image_1.jpg');


%Convert the image into grayscale and histogram equalization
grayimage = I(200:399, 450:699);
nbins = 25;
grayimage  = adapthisteq(grayimage,'clipLimit',0.02,'Distribution','rayleigh');
%Apply contrast adjustment & median filtering
L = imadjust(grayimage); % enhance contrast
M = medfilt2(L, [5 5]); % apply median filter to reduce noise
%apply Guassian filter to the image and difussion filtering 
N = imgaussfilt(M,[9 9]);
K = imdiffusefilt(N, "NumberOfIterations",200);
% Detect edges using Canny edge detection
BW = edge(K, 'canny', 0.6);
% Select the ROI
[J,rectout] = imcrop(BW);
figure, imagesc(J)
% Remove small objects from the image
BWs = bwareaopen(rectout, 600);
% Dilate the edges to connect any disconnected regions
se = strel('arbitrary', 160);
BWs = imdilate(BWs, se);
% Fill in any holes in the edges
BWs = imfill(BWs, "holes");
% Detect edges using Hough transform
[H,T,R] = hough(BWs);
P = houghpeaks(H,100,'Threshold',ceil(0.3*max(H(:))));
lines = houghlines(BW,T,R,P,'FillGap',5,'MinLength',7);
BW = zeros(size(BW));
for k = 1:length(lines)
   xy = [lines(k).point1; lines(k).point2];
   BW = insertShape(BW,'Line',xy,'LineWidth',1,'Color','white');
end

[Star Strider]

With respect to PubMed. you can search it specifically for ‘carotid ultrasound imaging’ as I did here.

[Honey]

I dont know how to code atcually just basic i am sure I making some mistake in input arguments my background is not engineering but medical.

Answer 1

[Image Analyst]

Look for published algorithms here:

http://www.visionbib.com/bibliography/contentsmedical.html#Medical%20Applications,%20CAT,%20MRI,%20Ultrasound,%20Heart%20Models,%20Brain%20Models

[Honey]

Are there any other sites like this please give me link It would help me alot.

[Image Analyst]

The visionbib one I gave you is all about image processing algorithms. There is another one called PubMed

https://pubmed.ncbi.nlm.nih.gov/

that has medical articles. Some of those may include image processing, but most are just general medical articles. Nonetheless you could look there too.

[Honey]

Atcually I need coding help .Because I cant do that and please if you could evaluate my code above l'd be very thankful.

[Image Analyst]

Instead of this

fullname = get_full_filemane(C:\Users\Min\Desktop\Clinical data\Normal(Age20)\1.KIMJEONGMIN\1);

you'd probably do this

fullname = get_full_filenane('C:\Users\Min\Desktop\Clinical data\Normal(Age20)\1.KIMJEONGMIN\1');

Now I'm not sure what get_full_filemane or get_full_filename is, but I bet they want a folder name as a string or character array and then it will return a filename from within that folder.

[Honey]

yes I added this because I could not add file in the path here in my Matlab I can add. Please can you tell me what mistake i am making in my code why I cant detect the edges