function out = highlight(image_file, csv_file)

% load image and csv files

A = imread(image_file);

M = csvread(csv_file);

for i=1:3

    B(:,:,i) = rgb2gray(A);

end

[p, q] = size(M);

for i=1:p

    for j=1:q/2

        if M(i,2*j) ~= 0

            col = M(i,2*j-1);

            row = M(i,2*j);

            B(row,col) = A(row,col);

        end

    end

end

out = B;

end