Getting imcontour matrix without the plotting

Is there a way to silently get the imcontour matrix C without having the contour plot?

[C,h]=imcontour(frame, 3);

I've tried using contourc, but I think I have to manipulate the image matrix to input into this function? I'm not sure how to though.

Any help would be appreciated!

Answer 1

[Nicolaie Popescu-Bodorin]

C = imcontour(IM, oneLevel); % will open a figure, whereas

C = contourc(double(IM), [oneLevel oneLevel]); % will be silent and faster%

Kind regards,

Nicolaie Popescu-Bodorin

www.lmrec.org/bodorin/

Answer 2

[Walter Roberson]

imcontour just parses its arguments and calls contour(). For the arguments you provide, calling contourc with the same arguments would create the contours you want without plotting them.