Problem in Neural Network

When I try to run the code

img = edu_imgpreprocess(I);
for cnt = 1:50
    bw2 = edu_imgcrop(img{cnt});
    charvec = edu_imgresize(bw2);
    out(:,cnt) = charvec;
end

P = out(:,1:40); 
T = [eye(10) eye(10) eye(10) eye(10) ];
Ptest = out(:,41:50);

For 26 alphabets making a change in the code as follows:

img = edu_imgpreprocess(I);
for cnt = 1:26
    bw2 = edu_imgcrop(img{cnt});
    charvec = edu_imgresize(bw2);
    out(:,cnt) = charvec;
end

P = out(:,1:20); 
T = [eye(10) eye(10) eye(10) eye(10) ];
Ptest = out(:,21:26);

It gives me an error of

Error using rgb2gray>parse_inputs (line 81)

MAP must be a m x 3 array.

Error in rgb2gray (line 35)

X = parse_inputs(varargin{:});

Error in edu_imgpreprocess (line 3)

Igray = rgb2gray(I);

Error in char3 (line 8)

img = edu_imgpreprocess(I);

Kindly help please. Thanks.

[Greg Heath]

I don't see any neural network functions. So why use neural network in the title?

[Mo'ath Al-Hayek]

can you share with us your code after modification?

[Image Analyst]

@Mo'ath Al-Hayek probably not since @Mohammad has not been here in 9 years so he'll probably never see your message. Or if he does, he doesn't have the code anymore. You're best off just posting your own question in your own new discussion thread (not here).

Answer 1

[Image Analyst]

If this is still a problem for you, what did you pass in for (the badly-named) I? Do a "whos I" before that line and say what is in the command window. Changes are it's not a regular, normal RGB image.

Replace this:

Igray = rgb2gray(I);

with this:

if ndims(I) == 3
    Igray = rgb2gray(I);
else
    Igray = I;
end

Answer 2

[Dabira]

Please tell me where did yu find out.m I cant find it

[Vijan Kaush]

here you can find the out.m function.

https://in.mathworks.com/matlabcentral/fileexchange/9954-simple-formatted-ascii-output/content/out.m

[Walter Roberson]

In the code in the Question here, out is an array not a function.