Person
Zsuzsanna Püspöki
Related publications (12)
Angular Accuracy of Steerable Feature Detectors
Michaël Unser, Julien René Pierre Fageot, Arash Amini, Zsuzsanna Püspöki, John Paul Ward
The detection of landmarks or patterns is of interest for extracting features in biological images. Hence, algorithms for finding these keypoints have been extensively investigated in the literature, and their localization and detection properties are well ...
SIAM PUBLICATIONS2019System and method for performing isogeometric analysis and finite element analysis using h-splines
Michaël Unser, Zsuzsanna Püspöki, Daniel Andreas Schmitter
A method for performing H-spline compatible isogeometric analysis (IGA) on a geometric object, the method being performed on a computer device having a memory, the method including the steps of creating an analysis suitable geometry (ASG) using H-splines f ...
2019Method and system for the creation of an h-spline based data structure, data storage, and data representation
Michaël Unser, Zsuzsanna Püspöki, Daniel Andreas Schmitter
A method for generating a data structure to digitally represent a geometrical object based on H-splines, the method being performed on a computer device having a data processor and memory, the method including the steps of creating a first data structure a ...
2019Local Geometric Transformations in Image Analysis
The characterization of images by geometric features facilitates the precise analysis of the structures found in biological micrographs such as cells, proteins, or tissues. In this thesis, we study image representations that are adapted to local geometric ...
EPFL2016On the Continuous Steering of the Scale of Tight Wavelet Frames
Michaël Unser, Daniel Sage, Zsuzsanna Püspöki, John Paul Ward
In analogy with steerable wavelets, we present a general construction of adaptable tight wavelet frames, with an emphasis on scaling operations. In particular, the derived wavelets can be "dilated" by a procedure comparable to the operation of steering ste ...
SIAM2016SpotCaliper: Fast Wavelet-Based Spot Detection with Accurate Size Estimation
Michaël Unser, Daniel Sage, Zsuzsanna Püspöki, John Paul Ward
Motivation: SpotCaliper is a novel wavelet-based image-analysis software providing a fast automatic detection scheme for circular patterns (spots), combined with the precise estimation of their size. It is implemented as an ImageJ plugin with a friendly us ...
Oxford Journals2016Transforms and Operators for Directional Bioimage Analysis: A Survey
Michaël Unser, Daniel Sage, Zsuzsanna Püspöki, Martin Kurt Storath
We give a methodology-oriented perspective on directional image analysis and rotation-invariant processing. We review the state of the art in the field and make connections with recent mathematical developments in functional analysis and wavelet theory. We ...
Springer International Publishing2016Template-Free Wavelet-Based Detection of Local Symmetries
Michaël Unser, Zsuzsanna Püspöki
Our goal is to detect and group different kinds of local symmetries in images in a scale- and rotation-invariant way. We propose an efficient wavelet-based method to determine the order of local symmetry at each location. Our algorithm relies on circular h ...
IEEE2015Fast Detection and Refined Scale Estimation Using Complex Isotropic Wavelets
Michaël Unser, Daniel Sage, Zsuzsanna Püspöki, John Paul Ward
The dyadic scaling in the discrete wavelet transform can lead to a loss of precision, in comparison to the computationally unrealistic continuous wavelet transform. To overcome this obstacle, we propose a novel method to locally scale wavelets between dyad ...
IEEE2015Design of Steerable Wavelets to Detect Multifold Junctions
Michaël Unser, Zsuzsanna Püspöki, Cédric René Jean Vonesch, Virginie Sophie Uhlmann
We propose a framework for the detection of junctions in images. Although the detection of edges and key points is a well examined and described area, the multiscale detection of junction centers, especially for odd orders, poses a challenge in pattern ana ...
IEEE2015