please provide with the color identification base paper for the following code

Question

BUGATHA VARALAKSHMI 2017-3-23

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https://ww2.mathworks.cn/matlabcentral/answers/331441-please-provide-with-the-color-identification-base-paper-for-the-following-code

关闭： MATLAB Answer Bot 2021-8-20

a=0;
b=0;
c=0;
p=0;
p1=0;
I=imread('E:\projectimages\imgs\clg.jpg')
imshow(I)
fnam=imread('E:\projectimages\imgs\clg.jpg');   
figure,imshow(fnam)
for mm = 1:size(fnam,1)
      for nn = 1:size(fnam,2)
if (fnam(mm,nn,2)) > fnam(mm,nn,1) && (fnam(mm,nn,2)) > fnam(mm,nn,3)
 fnam(mm,nn,1) = fnam(mm,nn,1);
 fnam(mm,nn,2) = fnam(mm,nn,2);
 fnam(mm,nn,3) = fnam(mm,nn,3);
        a=a+1;
  %       
  else
        fnam(mm,nn,1) = 0;
        fnam(mm,nn,2) = 0;
        fnam(mm,nn,3) = 0;  
        b=b+1;
      end
    end 
  end
  p = a / (a + b);
  p1 = p * 100;
imshow(fnam);
a = sprintf('Vegetation Pixel Count= %3d',a);
b = sprintf('Non Vegetation Pixel count= %3d',b);
c = sprintf('Percentage of area of veg is %3f %',p1);
msgbox(a);
msgbox(b);
msgbox(c);

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Answer 1

Walter Roberson 2017-3-23

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https://ww2.mathworks.cn/matlabcentral/answers/331441-please-provide-with-the-color-identification-base-paper-for-the-following-code#answer_259975

There is no "paper" for that. The code just extracts the pixels for which the green component is greater than the red or blue, and calls those pixels "vegetation". That is not a robust way to calculate vegetation. For one thing, it leaves out all brown, but a lot of wood is brown.