How can I extract 3D features form a stack of 2D images?
조회 수: 1 (최근 30일)
이전 댓글 표시
I am conducting a lung nodule detection form CT scan images. I extract the nodule candidates form series of 2D CT images. Then I stack the extracted ROIs to get a 3D image. After that I want to extract 3D features, but I don't know how can I extract the features from 3D directly or from each layers of 2D images. Please kindly suggest me how can I extract 3D features form a stack of 2D images.
srcFiles = dir('R_006S\*.jpg'); % the folder in which images exists
n = length(srcFiles);
a={}; slices={};
for i = 1:n
fileName = strcat('R_006S\',srcFiles(i).name);
a{i} = imread(fileName);
slices{i} = (a{i});
end
X = cat(3,slices{1:end});
map = hsv(90);
XR = X;
Ds = smooth3(XR);
hiso = patch(isosurface(Ds,5),'FaceColor','green','EdgeColor','none');
hcap = patch(isocaps(XR,5),'FaceColor','interp','EdgeColor','none');
colormap(map)
daspect(gca,[1,1,.4])
lightangle(305,30);
fig = gcf;
fig.Renderer = 'zbuffer';
lighting phong
isonormals(Ds,hiso)
hcap.AmbientStrength = .6;
hiso.SpecularColorReflectance = 0;
hiso.SpecularExponent = 50;
ax = gca;
ax.View = [215,30];
ax.Box = 'On';
axis tight
title('Original Data');
댓글 수: 2
Massimo Zanetti
2017년 2월 24일
편집: Massimo Zanetti
2017년 2월 24일
What do you mean by "exctracting features"? What features are you referrfing to?
PS. In your code there is some redundancy in loading images and making X, consider this to simplify it:
srcFiles = dir('R_006S\*.jpg'); % the folder in which images exists
n = length(srcFiles);
X = zeros(512,512,n);
for i = 1:n
fileName = ['R_006S\',srcFiles(i).name];
X(:,:,i) = imread(fileName);
end
Now X is your 3D image.
채택된 답변
Image Analyst
2017년 3월 4일
Do something (filtering or whatever is needed) to get to a point where you can threshold. Then threshold, label, and call regionprops().
추가 답변 (1개)
MDanit
2017년 3월 15일
Could you please provide your full answer here? As I have the same problem.
Thanks,
댓글 수: 4
참고 항목
카테고리
Help Center 및 File Exchange에서 Get Started with MATLAB에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!