how to crop multiple files
4 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
yogesh jain
il 12 Ott 2015
Commentato: Walter Roberson
il 29 Set 2016
hello guys , worked on triangular mask cropping of a DICOM image , here is the code -
clear all
I=dicomread('four.dcm');
I=uint16(I);
g=imshow(I,[0 600]);
axis on
[x,y]=ginput(3);
h = impoly(gca, [x,y]);
pos = wait(h);
BW = createMask(h,g);
BW=uint16(BW);
J=I.*BW;
figure,imshow(J,[0 600]);
I just want to perform this task on multiple DICOM images . used for loop but createMask is showing error about cell type data variables . what will be the approach ? please suggest me . Thank you
1 Commento
Risposta accettata
Stalin Samuel
il 12 Ott 2015
for i = 1:length(fileList)
I=dicomread(fileList{i}); %fileList contains names of all dicom images
I=uint16(I);
g=imshow(I,[0 600]);
axis on
[x,y]=ginput(3);
h = impoly(gca, [x,y]);
pos = wait(h);
BW = createMask(h,g);
BW=uint16(BW);
J=I.*BW;
figure,imshow(J,[0 600]);
end
6 Commenti
Sara Salimi
il 29 Set 2016
Modificato: Sara Salimi
il 29 Set 2016
Dear Walter, thank you very much.
Question: Does cropping affect the processing and and the performance of process/calculation? I mean smoothing or derivatives?
Thanks again
Walter Roberson
il 29 Set 2016
Generally speaking, operating on smaller matrices is faster, but for reasonably sized arrays operations like smoothing a sobel filters are pretty quick. Cropping is usually used to remove irrelevant information -- if you know that something is not part of the interesting part of the image, it is confusing to region find on it (for example might be text labels.)
Più risposte (0)
Vedere anche
Categorie
Scopri di più su DICOM Format in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!