Results 81 to 90 of about 14,989,965 (288)
Object recognition from local scale-invariant features
Proceedings of the Seventh IEEE International Conference on Computer Vision, 1999 An object recognition system has been developed that uses a new class of local image features. The features are invariant to image scaling, translation, and rotation, and partially invariant to illumination changes and affine or 3D projection.
D. Lowe
semanticscholar +1 more source
The MOND limit from space-time scale invariance
, 2009 The MOND limit is shown to follow from a requirement of space-time scale invariance of the equations of motion for nonrelativistic, purely gravitational systems; i.e., invariance of the equations of motion under (t,r) goes to (qt,qr), in the limit a0 ...
Limbach +9 more
core +1 more source
Tourism Space: An Attempt at a Fresh Look [PDF]
, 2014 In this article, the author is trying to answer the fundamental question: what is present-day tourism space like at a time of highly increasing flows of people or even a shift from the space of a ‘place’ to the space of a ‘flow’? The article puts special
Więckowski, Marek
core +1 more source
Temporal scale selection in time-causal scale space [PDF]
, 2017 When designing and developing scale selection mechanisms for generating hypotheses about characteristic scales in signals, it is essential that the selected scale levels reflect the extent of the underlying structures in the signal. This paper presents a theory and in-depth theoretical analysis about the scale selection properties of methods for ...
arxiv +1 more source
PDE-Constrained Scale Optimization Selection for Feature Detection in Remote Sensing Image Matching
MathematicsFeature detection and matching is the key technique for remote sensing image processing and related applications. In this paper, a PDE-constrained optimization model is proposed to determine the scale levels advantageous for feature detection. A variance
Yunchao Peng, Bin Zhou, Feng Qi
doaj +1 more source
Cybergeo, 2018 Starting from a practice of research that has been going back for years on the question of the use of scales in geohistorical works, this text offers a reflection on the plays of scale, as well as on the question of the MAUP (modifiable areal unit ...
Nicolas Verdier, Ludovic Chalonge
doaj +1 more source
Scale Space Smoothing, Image Feature Extraction and Bessel Filters
, 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
Multiscale Centerline Detection by Learning a Scale-Space Distance Transform
2014 IEEE Conference on Computer Vision and Pattern Recognition, 2014 We propose a robust and accurate method to extract the centerlines and scale of tubular structures in 2D images and 3D volumes. Existing techniques rely either on filters designed to respond to ideal cylindrical structures, which lose accuracy when the ...
A. Sironi, V. Lepetit, P. Fua
semanticscholar +1 more source
Non-scale-invariant inverse curvature flows in Euclidean space
, 2012 We consider the inverse curvature flows $\dot x=F^{-p}\nu$ of closed star-shaped hypersurfaces in Euclidean space in case ...
Claus Gerhardt +3 more
core +1 more source
Fractal scale Hilbert spaces and scale Hessian operators [PDF]
arXiv, 2009 Scale spaces were defined by H.Hofer, K.Wysocki, and E.Zehnder. In this note we introduce a subclass of scale spaces and explain why we believe that this subclass is the right class for a general setup of Floer theory.
arxiv