@article{hossain_gradient11, 
    author={Hossain, Z. and Alim, U. and Möller, T.}, 
    journal={Visualization and Computer Graphics, IEEE Transactions on}, 
    title={Toward High-Quality Gradient Estimation on Regular Lattices}, 
    year={2011}, 
    month={April}, 
    volume={17}, 
    number={4}, 
    pages={426-439}, 
    keywords={approximation theory;gradient methods;rendering (computer graphics);series (mathematics);Cartesian lattices;Hilbert space framework;approximation power criteria;body-centered cubic lattices;compactness criteria;continuous reconstruction kernels;convolution sum;gradient estimation;multidimensional Taylor series expansion;orthogonal projection;regular lattices;volume rendering;Convolution;Filters;Hilbert space;Image reconstruction;Interpolation;Kernel;Lattices;Multidimensional systems;State estimation;Taylor series;Approximation theory;Taylor series expansion;body-centered cubic lattice;box splines.;normal reconstruction;orthogonal projection}, 
    doi={10.1109/TVCG.2010.37}, 
    ISSN={1077-2626},
}