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  • Computation of normal vectors of discrete 3D objects: application to natural snow images from X-ray tomography
    Flin, Frederic ...
    Estimating the normal vector field on the boundary of discrete 3D objects is essential for rendering and image measurement problems. Most of the existing algorithms do not provide an accurate ... determination of the normal vector fieldfor shapes that present edges. We propose here a new and simple computational method to obtain accurate results on all types of shapes whatever their degree of local convexity. The presented method is based on theanalysis of the gradient vector field of the distance map of the object. Some results on simulated data and snow images from X-ray tomography are presented and discussed.
    Vir: Image analysis & stereology : official journal of the International Society for Stereology. - ISSN 1580-3139 (Vol. 20, no. 3, str. 187-191)
    Vrsta gradiva - članek, sestavni del
    Leto - 2001
    Jezik - angleški
    COBISS.SI-ID - 16037593

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    Digitalna knjižnica Slovenije - dLib.si

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