plotMatches.m

function [] = plotMatches(im1, im2, matches, locs1, locs2)
% INPUT
% im1, im2 - grayscale images, scaled into [0 1]
% matches -  the list of matches returned by briefMatch()
% locs1, locs 2 - the locations of keypoints returne by briefLite() . 
%                 m1 x 3 and m2 x3 respectively. each row corresponds to the 
%                 space-scale position: [x_coordinate,y_coordiante,scale]


    im1= im2double(im1);
    im2= im2double(im2);
    
    width = size(im1,2) + size(im2,2);
    height = max(size(im1,1), size(im2,1));
    nchannel = size(im1,3); 
    img = zeros(height, width,nchannel);
%     size(img)
    img(1:size(im1,1),1:size(im1,2),:) = im1;
    img(1:size(im2,1),size(im1,2)+1:size(im1,2) + size(im2,2),:) = im2; 
    imshow(img);
    
    axis equal;
    hold on;
    for i = 1:size(matches,1)
        p1 = locs1(matches(i,1),:);
        p2 = locs2(matches(i,2),:); 
        line([p1(1) size(im1,2)+p2(1)],[p1(2),p2(2)], 'Color','r','LineWidth',1); 
    end
    hold off; 

end