Results 11 to 20 of about 212,077 (283)

Complex Wavelet Bases, Steerability, and the Marr-Like Pyramid [PDF]

open access: yesIEEE Transactions on Image Processing, 2008
Our aim in this paper is to tighten the link between wavelets, some classical image-processing operators, and David Marr's theory of early vision. The cornerstone of our approach is a new complex wavelet basis that behaves like a smoothed version of the Gradient-Laplace operator.
Van De Ville, Dimitri, Unser, Michael
openaire   +3 more sources

Object Detection Based on Global-Local Saliency Constraint in Aerial Images

open access: yesRemote Sensing, 2020
Different from object detection in natural image, optical remote sensing object detection is a challenging task, due to the diverse meteorological conditions, complex background, varied orientations, scale variations, etc.
Chengyuan Li   +8 more
doaj   +1 more source

Overcomplete steerable pyramid filters and rotation invariance [PDF]

open access: yes, 1994
A given (overcomplete) discrete oriented pyramid may be converted into a steerable pyramid by interpolation. We present a technique for deriving the optimal interpolation functions (otherwise called 'steering coefficients').
Anderson, C. H.   +5 more
core   +4 more sources

Unsupervised Horizontal Pyramid Similarity Learning for Cross-Domain Adaptive Person Re-Identification

open access: yesIEEE Access, 2021
Although person re-identification has made great progress, unsupervised cross-domain adaptive person re-identification is still a challenging problem. With no labeled data in target domain, the performance may have a significant drop.
Wenhui Dong   +4 more
doaj   +1 more source

The Centerline Extraction Algorithm of Weld Line Structured Light Stripe Based on Pyramid Scene Parsing Network

open access: yesIEEE Access, 2021
Based on the good feature learning ability of the pyramid scene parsing network, a method for extracting the centerline of structured light stripes of weld lines based on the pyramid scene parsing network and Steger algorithm is proposed.
Weibo Yu   +3 more
doaj   +1 more source

Efficiently Storing Well-Composed Polyhedral Complexes Computed Over 3D Binary Images [PDF]

open access: yes, 2017
A 3D binary image I can be naturally represented by a combinatorial-algebraic structure called cubical complex and denoted by Q(I ), whose basic building blocks are vertices, edges, square faces and cubes. In Gonzalez-Diaz et al.
González Díaz, Rocío   +2 more
core   +1 more source

Steerable Pyramid Based Complex Documents Images Segmentation [PDF]

open access: yes2009 10th International Conference on Document Analysis and Recognition, 2009
In this paper, we propose an accurate and suitable designed system for complex documents segmentation. This system is based on steerable pyramid transform. The features extracted from pyramid sub bands serve to locate and classify regions into text and non text in some noise infected, deformed, multilingual, multi script document images.
Mohamed Benjelil   +3 more
openaire   +1 more source

Exploration of the pyramid complex of King Djedkare: 2019 fall season [PDF]

open access: yesPražské Egyptologické Studie, 2020
The recent fieldwork of the Egyptian mission in the pyramid temple of King Djedkare focused on cleaning and documenting three major areas. The temple area immediately south of the columned courtyard provided no firm evidence for reconstructing the layout
Mohamed Megahed, Peter Jánosi
doaj  

Deep Learning-Based Multiscale Pyramid Sieve and Analysis Module in Image Segmentation

open access: yesIEEE Access, 2023
Image segmentation is an essential part of remote sensing preprocessing. This paper proposes a deep learning-based multiscale pyramid sieve and analysis module to solve the problems associated with multiscale object coexistence in the complex semantic ...
Di Cao   +4 more
doaj   +1 more source

A global approach to the refinement of manifold data [PDF]

open access: yes, 2014
A refinement of manifold data is a computational process, which produces a denser set of discrete data from a given one. Such refinements are closely related to multiresolution representations of manifold data by pyramid transforms, and approximation of ...
Dyn, Nira, Sharon, Nir
core   +1 more source

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