MATLAB: How to Add Image Classes

image processingMATLAB

I want to classify my image files into 4 classes, but I only get 0 and 1 with this code:

Target_Data = ones(1,Total_Images);
Target_Data(1:Total_Images/4) = 0;

How to add the other classes? Thank you.

Best Answer

Target_Data = repmat((1:4).', Total_Images/4, 1);

Related Solutions

MATLAB: How to count the number of 1 after every element of the vector

>> X = [1,1,1,1,0,0,1,1,0,1,0,1,0,0,1,1]
X =
   1   1   1   1   0   0   1   1   0   1   0   1   0   0   1   1
>> Z = cumsum([true,diff(X)>0]);
>> F = @(v){flip(cumsum(flip(v)))};
>> Y = cell2mat(accumarray(Z(:),X(:),[],F)).'
Y =
   4   3   2   1   0   0   2   1   0   1   0   1   0   0   2   1

MATLAB: Replicating values a certain number of times

There are a number of ways to do this.

One way use a constant interpolator:

 x = 0:9;
 h = ones(4,1);
 xnew = zeros(40,1);
 xnew(1:4:end) = x;
 y = filter(h,1,xnew);

Another way use repmat()

 x = (0:9)';
 x = (repmat(x,1,4))';
 x = reshape(x,40,1);

Best Answer

Related Solutions

MATLAB: How to count the number of 1 after every element of the vector

MATLAB: Replicating values a certain number of times

Related Question