Project must be done with c#.
Function needed which returns all black areas outlines as graphicsPath [url removed, login to view] gets as parameter Image object which type can by indexed or nonindex type (jpg,gif,bmp) image is b/w.
introduction of function must be
public [url removed, login to view] findBlackAreas([url removed, login to view] img, int minPixelsInArea)
second parameters tells minimum black area size what will be included to returned array.