MATLAB: How to save the image

save

I have the folowing code ,plz tell how to save the circled image
k is my image
function [x1 y1 r ] = circle_saptha4(k)
ok = 0;
nim = k;
while ok~=1
  % figure;

    imshow(nim);
  pt = ginput(2)
    x1 = pt(1,1);
    y1 = pt(1,2);
    x2 = pt(2,1);
    y2 = pt(2,2);
    xpt = [x1 x2];
    ypt = [y1 y2];
    %line(x,y); % Enablw this for draw rectangle on circle
    r = sqrt((x2-x1)^2 + (y2-y1)^2)
    pp=rsmak('circle',r,[x1 y1]);
    % figure;
    % imshow(k)
    fnplt(pp);
    line(xpt,ypt);
    xtl = x1-r;
    xtr = x1+r;
    xbl = x1-r;
    xbr = x1+r;
    ytl = y1+r;
    ytr = y1+r;
    ybl = y1-r;
    ybr = y1-r;
    x = [xtl xtr xbr xbl xtl];
    y = [ytl ytr ybr ybl ytl];
    %line(x,y);
    for i=1:size(k,1)
        for j=1:size(k,2)
            x2 = j;
            y2 = i;
            val = floor(sqrt((x2-x1)^2 + (y2-y1)^2));
            if(val == floor(r))
                nim(i,j,1) = 255;
                nim(i,j,2) = 0;
                nim(i,j,3) = 0;
%             else
%                 nim(i,j,1) = k(i,j,1);
%                 nim(i,j,2) = k(i,j,2);
%                 nim(i,j,3) = k(i,j,3);
%             end
      end
      end
    ok = (menu('Do u want to draw another circle?','No','Yes')==1)
%     hold on
  end
end

Best Answer

Why not use rectangle() to draw the circles into the overlay, then use export_fig (from the File Exchange) to save the image with the circles written into the image?
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