Results 271 to 280 of about 12,077,058 (321)

SIFT with the F-transform Pre-processing

2017
This paper analyzes the efficiency of the Scale Invariant Feature Transform (SIFT) measured in terms of execution time and stability of detection for keypoint location. Our goal is to investigate the influence of various downscaling methods which pre-process images before the SIFT is executed.
Petr Hurtik, Petra Števuliáková, Irina Perfilieva   +2 more
openaire   +1 more source

The cooperative nature of G-F transformation of actin

Biochimica et Biophysica Acta, 1962
Abstract Experimental results are presented which suggest that the G-F transformation of actin is a cooperative phenomenon. One of these results is concerned with the relation between the initial rate of transformation and the G-actin concentration. The initial rate increases in proportion to the third to fourth power of G-actin concentration.
M, KASAI, S, ASAKURA, F, OOSAWA
openaire   +2 more sources

F-transform with parametric generalized fuzzy partitions

Fuzzy Sets and Systems, 2011
The fuzzy transform was introduced by \textit{I. Perfilieva} [Fuzzy Sets Syst. 157, No. 8, 993--1023 (2006; Zbl 1092.41022)] and having some interesting properties that allow its use in the curve fitting and smoothing data. In the present study the author suggests an extension of the fuzzy transform in order to control and improve the smoothing effect.
openaire   +3 more sources

Modified F-transform Based on B-splines

2018
The aim of this paper is to improve the F-transform technique based on B-splines. A modification of the F-transform of higher degree with respect to fuzzy partitions based on B-splines is done to extend the good approximation properties from the interval where the Ruspini condition is fulfilled to the whole interval under consideration.
Martins Kokainis, Svetlana Asmuss
openaire   +1 more source

Enhanced F-transform Exemplar Based Image Inpainting

2018
This paper focuses on a completion of the partially damaged image. There are a variety of techniques to deal with this task. Our contribution belongs to the group of exemplar based image inpainting techniques which process the image what was separated to the many small regions.
openaire   +1 more source

Differentiation by the F-transform and application to edge detection

Fuzzy Sets Syst., 2016
I. Perfilieva, P. Hodáková, P. Hurtík
semanticscholar   +1 more source

F-transform-based shooting method for nonlinear boundary value problems

Soft Computing - A Fusion of Foundations, Methodologies and Applications, 2017
I. Perfilieva, Petra Števuliáková, Radek Valášek   +2 more
semanticscholar   +1 more source

Axiomatic of Inverse Lattice-Valued F-transform

2018
Axioms of two versions of inverse fuzzy transformation systems are introduced, and it is proved that a transformation function satisfies these axioms if and only if it is an upper or lower inverse lattice-valued F-transform with respect to a fuzzy partition.
openaire   +1 more source

F-TRANSFORM FOR NUMERICAL SOLUTION OF TWO-POINT BOUNDARY VALUE PROBLEM

, 2017
I. Perfilieva, Petra Števuliáková, Radek Valášek   +2 more
semanticscholar   +2 more sources

Why Triangular Membership Functions are Often Efficient in F-transform Applications: Relation to Probabilistic and Interval Uncertainty and to Haar Wavelets

International Conference on Information Processing and Management of Uncertainty, 2018
O. Kosheleva, V. Kreinovich
semanticscholar   +1 more source