A multi-scale approach for estimating gradient from volumetric data.
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Date
2015
Authors
Belaton, Bahari
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Abstract
Gradient is mostly used to approximate a quantity called normal vector, which is widely used in techniques such as raycasting or shading to calculate the shade of a pixel. Central Different Equation (CDE), Forward Difference Equation (FDE) and Backward Difference Equation (BDE) [1] are examples of common finite-difference gradient filters to estimate gradient from discrete data.
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Keywords
estimating , multi-scale