MATLAB: How to compare two matrix

matrix

redChannel = IM(:, :, 1);
greenChannel = IM(:, :, 2);
blueChannel = IM(:, :, 3);
for yourNumber = 1 : max(labelimg(:))
    thisLabel = labelimg == yourNumber; % for example 2 or 3 or whatever region you want.
    meanR(yourNumber) = mean(redChannel(thisLabel));
    meanG(yourNumber) = mean(greenChannel(thisLabel));
    meanB(yourNumber) = mean(blueChannel(thisLabel));
end
table(neigbor label)=
     2 3 4 5
  2  1 
  3  1 1 
  4  1 1 1
  5  1 0 1 1
I got a table which show the neighbor label and I got mean rgb for each label, I just need loop through the left triangle because another part is same.
The mean value for the label is double type, how I can round to integer only?
I got the mean of each label region and then I now want to compare them.
for i=2 : max(table(:))
for j=2:max(table(:)) 
   if(i,j+1)=1  %1 mean 2 label are neighbor
      if compare(j+1,i)<=(rgb+-5) %then reassign the label 
         if (i>j+1)  label i  = label j+1   %always assign to smaller label
             else  label j+1 = label to i
Final result I hope to get is like this
label 4 and 5 is within(rgb+-5) with label 2 so all assign to label 2
label =
   3 3 3 3 3 3            
   1 1 1 1 1 1            
   1 2 2 1 4 1             
   1 1 1 1 4 1            
   5 5 5 1 1 1             
   5 5 5 5 5 5  
result = 
     3 3 3 3 3 3            
     1 1 1 1 1 1          
     1 2 2 1 2 1            
     1 1 1 1 2 1            
     2 2 2 1 1 1             
     2 2 2 2 2 2

Best Answer

abs(meanR(j+1)-meanR(i)) <= 5 &&
abs(meanB(j+1)-meanB(i)) <= 5 &&
abs(meanG(j+1)-meanG(i)) <= 5
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