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Multilevel approximation of the gradient operator on an adaptive spherical geodesic grid.
Ratikanta Behera
Mani Mehra
Nicholas K.-R. Kevlahan
Published in:
Adv. Comput. Math. (2015)
Keyphrases
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grid computing
closed form
piecewise constant
upper approximation
error bounds
approximation error
grid points
three dimensional
edge detection
image gradient
gradient information
laplacian operator