Transforming a matrix in an image
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
Oliver Lestrange
am 10 Aug. 2020
Kommentiert: Oliver Lestrange
am 10 Aug. 2020
Hi community,
I am transforming a matrix in an image, but when I try to see the green and blue components of the image a get the error Index exceeds matrix dimensions.
dmin1=2;
n=15;
A=ones(n);
A(2:dmin1:end,2:dmin1:end)=0;
im = imshow(A,[])
%im = image(im,'CDataMapping','scaled')
...
... % code that add some colors to im
R=im(:,:,1)
G=im(:,:,2)
B=im(:,:,3)
What I'm doing wrong?
4 Kommentare
Akzeptierte Antwort
Image Analyst
am 10 Aug. 2020
First of all, your image is A, not im. im is what imshow returns and it is the handle to an image object, not an actual image itself. Secondly, you declared A as a 2-D gray scale image, not a 3-D color image. You'd need to make A like this:
A=ones(n, n, 3);
A(2:dmin1:end, 2:dmin1:end, :) = 0;
R = A(:,:,1)
G = A(:,:,2)
B = A(:,:,3)
or
[R, G, B] = imsplit(A);
Weitere Antworten (0)
Siehe auch
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!