Horn, B.K.P.Brooks, M.J.2014-10-262014-10-261986Computer Vision, Graphics, and Image Processing, 1986; 33(2):174-2080734-189Xhttp://hdl.handle.net/2440/86664Abstract not availableen© 1986 Academic Press, Inc.The variational approach to shape from shadingJournal article003000914810.1016/0734-189X(86)90114-3A1986A3564000042-s2.0-0022660548102137Brooks, M.J. [0000-0001-9612-5884]