Matlab: Unable to plot precision recall curve for given images

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I am accessing 10 images from a folder "c1" and I have query image. I have implemented code for loading images in cell array and then I'm calculating histogram intersection between query image and each image from folder "c1" one-by-one. Now i want to draw precision-recall curve but i am not sure how to write code for getting "precision-recall curve" using the data obtained from histogram intersection. My code:

Inp1=rgb2gray(imread('D:\visionImages\c1\1.ppm'));
figure, imshow(Inp1), title('Input image 1');

srcFiles = dir('D:\visionImages\c1\*.ppm');  % the folder in which images exists
for i = 1 : length(srcFiles)
    filename = strcat('D:\visionImages\c1\',srcFiles(i).name);
    I = imread(filename);
     I=rgb2gray(I);
    Seq{i}=I;


end
for i = 1 : length(srcFiles)
    A=Seq{i};
    B=Inp1;
    a = size(A,2); b = size(B,2); 
    K = zeros(a, b);
    for j = 1:a
    Va = repmat(A(:,j),1,b);
    K(j,:) = 0.5*sum(Va + B - abs(Va - B));
    end  
end

asked 36 secs ago

nikhilk

28

Matlab: Unable to plot precision recall curve for given images