Chojnacki, W.Brooks, M.Van Den Hengel, A.Gawley, D.Sun, C.Talbot, H.Ourselin, S.Adriaansen, T.2007-05-142007-05-142003Digital image computing : techniques and applications ; proceedings of the VIIth Biennial Australian Pattern Recognition Society Conference, DICTA 2003 / C. Sun, H. Talbot, S. Ourselin and T. Adriaansen (eds.), vol. 1, pp. 449-4580643090398http://hdl.handle.net/2440/29524Estimation of parameters from image tokens is a central problem in computer vision. FNS, CFNS and HEIV are three recently developed methods for solving special but important cases of this problem. The schemes are means for finding unconstrained (FNS, HEIV) and constrained (CFNS) minimisers of cost functions. In earlier work of the authors, FNS, CFNS and a version of HEIV were applied to a specific cost function. Here we outline an extension of the approach to more general cost functions. This allows the FNS, CFNS and HEIV methods to be placed within a common framework.enConference paper002003228557570Chojnacki, W. [0000-0001-7782-1956]Van Den Hengel, A. [0000-0003-3027-8364]