Results 31 to 40 of about 1,001,350 (314)

INTEGRATING SCALE AND SPACE IN 3D CITY MODELS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
This paper presents the problem of the current separate treatment of levels of detail in city models. We propose a solution, detail the main principles, and present our initial results on the approach.
J. Stoter   +3 more
doaj   +1 more source

A Scale-Space Medialness Transform Based on Boundary Concordance Voting [PDF]

open access: yes, 1999
The Concordance-based Medial Axis Transform (CMAT) presented in this paper is a multiscale medial axis (MMA) algorithm that computes the medial response from grey-level boundary measures.
Pycock, David, Xu, Ming
core   +1 more source

Scale and space dependencies of soil nitrogen variability [PDF]

open access: yesNonlinear Processes in Geophysics, 2017
In this study, we use multifractal analysis, through generalized dimensions (Dq) and the relative entropy (E(δ)), to investigate the residual effects of fertigation treatments applied to a previous crop on wheat and grain biomass and nitrogen content ...
A. M. Tarquis   +7 more
doaj   +1 more source

Visual Saliency Based on Scale-Space Analysis in the Frequency Domain [PDF]

open access: yesIEEE Transactions on Pattern Analysis and Machine Intelligence, 2013
We address the issue of visual saliency from three perspectives. First, we consider saliency detection as a frequency domain analysis problem. Second, we achieve this by employing the concept of nonsaliency.
Jian Li   +4 more
semanticscholar   +1 more source

Generalized Gaussian Scale-Space Axiomatics Comprising Linear Scale-Space, Affine Scale-Space and Spatio-Temporal Scale-Space

open access: yesJournal of Mathematical Imaging and Vision, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Scale Space Smoothing, Image Feature Extraction and Bessel Filters

open access: yes, 2011
The Green function of Mumford-Shah functional in the absence of discontinuities is known to be a modified Bessel function of the second kind and zero degree. Such a Bessel function is regularized here and used as a filter for feature extraction.
Gunn, Steve, Mahmoodi, Sasan
core   +1 more source

Scale-space Feature Extraction on Digital Surfaces [PDF]

open access: yes, 2015
International audienceA classical problem in many computer graphics applications consists in extracting significant zones or points on an object surface,like loci of tangent discontinuity (edges), maxima or minima of curvatures, inflection points, etc ...
Coeurjolly, David   +2 more
core   +3 more sources

A parameterless scale-space approach to find meaningful modes in histograms - Application to image and spectrum segmentation [PDF]

open access: yesInt. J. Wavelets Multiresolution Inf. Process., 2014
In this paper, we present an algorithm to automatically detect meaningful modes in a histogram. The proposed method is based on the behavior of local minima in a scale-space representation.
J. Gilles, K. Heal
semanticscholar   +1 more source

Switched-capacitor networks for scale-space generation [PDF]

open access: yes, 2011
In scale-space filtering signals are represented at several scales, each conveying different details of the original signal. Every new scale is the result of a smoothing operator on a former scale.
Brea Sánchez, Víctor Manuel   +5 more
core   +1 more source

Automated Reconstruction of Building LoDs from Airborne LiDAR Point Clouds Using an Improved Morphological Scale Space

open access: yesRemote Sensing, 2016
Reconstructing building models at different levels of detail (LoDs) from airborne laser scanning point clouds is urgently needed for wide application as this method can balance between the user’s requirements and economic costs.
Bisheng Yang   +5 more
semanticscholar   +1 more source

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