Index exceeds matrix dimensions
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
SNEHA P S
am 17 Jul. 2017
Kommentiert: Guillaume
am 17 Jul. 2017
Index exceeds matrix dimensions.
Error in test (line 19) newgreen = c(:,:,2);
I got an error like this while running the below code;
a = imread('lena.tif');
%imread(a);
%imgsize = getImgSize('image.jpg')
imshow(a)
img = imfinfo('lena.tif')
%I = rgb2gray(a);
%figure
%imshow(I)
red = a(:,:,1);
imshow(red)
green = a(:,:,2);
imshow(green)
blue = a(:,:,3);
imshow(blue)
c = horzcat(red,green,blue);
imshow(c)
newred = c(:,:,1);
imshow(red)
newgreen = c(:,:,2);
%imshow(green)
%newblue = c(:,:,3);
%imshow(blue)
how could i solve this ?
2 Kommentare
Ahmad Moniri
am 17 Jul. 2017
Are you sure the image is RGB and not grayscale? What does size(a) return for you?
Guillaume
am 17 Jul. 2017
If the error occurs at the indexing of c, then the image is definitively RGB. Otherwise, the error would occur at
red = a(:, :, 1);
Certainly, adding
assert(size(a, 3) == 3, 'Image is not RGB');
after the imread call would make the program more robust.
Akzeptierte Antwort
Guillaume
am 17 Jul. 2017
Bearbeitet: Guillaume
am 17 Jul. 2017
how could i solve this ?
c = cat(3, red, green, blue);
You were contatenating your arrays horizontally, resulting in a array of size height x 3*width instead of an array height x width x 3.
Note that I don't see the purpose of your code. It creates c exactly the same as a, and newred, newgreen and newblue exactly the same as red, green, blue.
0 Kommentare
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Matrix Indexing finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!