How to transfer this into matlab code

Hello

I need to transfer this code to matlab to use it to get the Normalized red/Grren/Blue index of image

  

    VI=np.zeros((img.shape[0], img.shape[1], 20))
    RGB_sum=np.sum(img, axis=2)
    R=img[:,:,2]
    G=img[:,:,1]
    B=img[:,:,0]
    rn=R/RGB_sum 
    gn=G/RGB_sum 
    bn=B/RGB_sum 
    

Answer 1

[Pamudu Ranasinghe]

img=imread('img_test.jpg');

RGB_Sum=sum(img,3);   

%%%---> Method 1
[R,G,B]=imsplit(img);

%%%Method 2
%R=img(:,:,1);
%G=img(:,:,2);
%B=img(:,:,3);

rn = double(R) ./ RGB_Sum;
gn = double(G) ./ RGB_Sum;
bn = double(B) ./ RGB_Sum;

%If you want to show the Image
imshow(rn,[])
imshow(gn,[])
imshow(bn,[])

[Alaa Ibrahim Eldesoky]

Thanks alot it's work with me

I was transfered the code into this

    
    img=imread('img_test.jpg');
    
    R=img(:,:,1);
    G=img(:,:,2);
    B=img(:,:,3);
    RGB_sum = double(R) + double(G) + double(B);
    rn=double(R)./double(RGB_sum) ;
    gn=double(G)./double(RGB_sum) ;
    bn=double(B)./double(RGB_sum) ;