Matlab: How to derive the vertices (coordinates) of polygons in voronoi diagram?

Question

I have a created function file in hand which is to draw lines in image,[img]=drawline(point1,point2,color,img). It\'s used to connect any two points that are inside

Answer 1

Assuming you have this drawline function that draws lines in images, this is how you loop over the edges of Voronoi diagram of a set of points:

%# set of points and voronoi diagram
X = rand(10,1)*200; Y = rand(10,1)*200;
[vx,vy] = voronoi(X,Y);

%# vertices connecting the edges
p1 = [vx(1,:);vy(1,:)];     % columns are "from" points
p2 = [vx(2,:);vy(2,:)];     % columns are "to" points

%# draw edges on top of image matrix
img = zeros(200,200,3);
clr = [255 0 0];
for i=1:size(vx,2)
    img = drawline(p1(:,i), p2(:,i), clr, img);
end