Title :
The use of separated reflection components in estimating geometrical parameters of curved surface elements
Author :
Glas, J.C. ; van der Heijden, F.
Author_Institution :
Dept. of Electr. Eng., Twente Univ., Enschede, Netherlands
Abstract :
Iterative least-squares estimation, requires accurate reflectance models to retrieve geometrical parameters of curved surface elements from an image projection. We investigate the use of separating the diffuse (body) reflection from the specular (surface) reflection being responsible for image highlights. Experiments show that the (smooth) diffuse component yields the best convergence properties, while the (sharp) specular component can contribute to the improvement of the noise insensitivity
Keywords :
Gaussian noise; convergence of numerical methods; image processing; inverse problems; iterative methods; least squares approximations; parameter estimation; reflectivity; Gaussian noise; convergence properties; curved surface elements; diffuse component; experiments; geometrical parameters estimation; image highlights; image projection; iterative least-squares estimation; noise insensitivity; nonlinear inverse problem; reflectance models; separated reflection components; specular component; specular reflection; surface reflection;
Conference_Titel :
Image Processing and its Applications, 1995., Fifth International Conference on
Conference_Location :
Edinburgh
Print_ISBN :
0-85296-642-3
DOI :
10.1049/cp:19950677
