Results 21 to 30 of about 710,329 (341)

A robust algorithm for optic disc segmentation and fovea detection in retinal fundus images

open access: yesCurrent Directions in Biomedical Engineering, 2017
Accurate optic disc (OD) segmentation and fovea detection in retinal fundus images are crucial for diagnosis in ophthalmology. We propose a robust and broadly applicable algorithm for automated, robust, reliable and consistent fovea detection based on OD
Rust Caterina   +3 more
doaj   +1 more source

Concept image and concept definition in mathematics with particular reference to limits and continuity [PDF]

open access: yes, 1981
The concept image consists of all the cognitive structure in the individual's mind that is associated with a given concept. This may not be globally coherent and may have aspects which are quite different from the formal concept definition.
D. O. Tall   +3 more
core   +1 more source

Two-Dimensional Fuzzy Spatial Relations: A New Way of Computing and Representation

open access: yesAdvances in Fuzzy Systems, 2012
Fuzziness is found everywhere, in modeling spatial relations, fuzziness is found at object level as well as in relation semantics. Commonly, fuzzy topological relations are computed between fuzzy objects. Fuzziness in relation semantics is represented by
Nadeem Salamat, El-hadi Zahzah
doaj   +1 more source

The distance between students’ concept image and quadrilateral object definition based on students’ mathematical ability

open access: yesAl-Jabar, 2022
Students learn mathematics through practical applications without applying it. Consequently, the concept images and definitions that students offer do not match.
Idris Fadillah   +3 more
doaj   +1 more source

Metrics for generalized persistence modules [PDF]

open access: yes, 2015
We consider the question of defining interleaving metrics on generalized persistence modules over arbitrary preordered sets. Our constructions are functorial, which implies a form of stability for these metrics.
Bubenik, Peter   +2 more
core   +1 more source

PEMBELAJARAN MATEMATIKA DENGAN MENGGUNAKAN MEDIA GAMBAR DI KELAS 1 SDN 017 SEBERANG CENGAR KECAMATAN KUANTAN MUDIK

open access: yesJurnal PAJAR (Pendidikan dan Pengajaran), 2018
This research is motivated by the low learning result of mathematics. The purpose of the study is to improve the learning outcomes of mathematics through the use of image media.
Rosmayanti Rosmayanti
doaj   +1 more source

PREPROCESSING AND REGISTRATION OF MINISCOPE-BASED CALCIUM IMAGING OF THE RODENT BRAIN [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Microscopic imaging is central to the brain and cognition studies in animals and often requires advanced image processing. In vivo recordings on awake behaving animals require stabilization of the images as the tissue in the images undergoes non-rigid ...
T. B. Sagindykov   +2 more
doaj   +1 more source

Morphology for Image Processing. Part I [PDF]

open access: yes, 2012
In this article we defined mathematical morphology image processing with set operations. First, we defined Minkowski set operations and proved their properties.
Beata Padlewska   +12 more
core   +2 more sources

Shimura varieties in the Torelli locus via Galois coverings [PDF]

open access: yes, 2014
Given a family of Galois coverings of the projective line we give a simple sufficient condition ensuring that the closure of the image of the family via the period mapping is a special (or Shimura) subvariety in A_g. By a computer program we get the list
Frediani, Paola   +2 more
core   +3 more sources

Optimization of structural similarity in mathematical imaging [PDF]

open access: yesOptimization and Engineering, 2020
It is now generally accepted that Euclidean-based metrics may not always adequately represent the subjective judgement of a human observer. As a result, many image processing methodologies have been recently extended to take advantage of alternative visual quality measures, the most prominent of which is the Structural Similarity Index Measure (SSIM ...
Otero D.   +3 more
openaire   +4 more sources

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