Chojnacki, W.Brooks, M.Van Den Hengel, A.Gawley, D.2006-12-032006-12-032005Journal of Mathematical Imaging and Vision, 2005; 23(2):175-1830924-99071573-7683http://hdl.handle.net/2440/16758The original publication can be found at www.springerlink.comEstimation 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 core version of HEIV were applied to a specific cost function. Here we extend the approach to more general cost functions. This allows the FNS, CFNS and HEIV methods to be placed within a common framework.enstatistical methods, maximum likelihood, (un)constrained minimisation, fundamental matrix, epipolar equation, conic fittingJournal article002005050510.1007/s10851-005-6465-y0002293149000042-s2.0-2394452392154994Chojnacki, W. [0000-0001-7782-1956]Brooks, M. [0000-0001-9612-5884]Van Den Hengel, A. [0000-0003-3027-8364]