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Záznamy kolekce (řazeno podle Datum zaslání v sestupně pořadí): 141 až 160 z 238
Diviš, Václav , Hrúz, Marek
Evaluation of Image Synthesis for Automotive Purposes

The aim of this article is to evaluate a state of the art image synthesis carried out via Generative Adversarial Networks (conditional Wasserstein GAN and Self Attention GAN) on a traffic signs dataset. For the experiment, we focused on generating images with a 64×64-pixel res...

Armagan, Anil , Garcia-Hernando, Guillermo , Baek, Seungryul , Hampali, Shreyas , Rad, Mahdi , Zhang, Zhaohui , Xie, Shipeng , Chen, MingXiu , Zhang, Boshen , Xiong, Fu , Yang, Xiao , Cao, Zhiguo , Yuan, Junsong , Ren, Pengfei , Huang, Weiting , Sun, Haifeng , Hrúz, Marek , Kanis, Jakub , Krňoul, Zdeněk , Wan, Qingfu , Li, Shile , Yang, Linlin , Lee, Dongheui , Yao, Angela , Zhou, Weiguo , Mei, Sijia , Liu, Yunhui , Spurr, Adrian , Iqbal, Umar , Molchanov, Pavlo , Weinzaepfel, Philippe , Brégier, Romain , Rogez, Grégory , Lepetit, Vincent , Kim, Tae-Kyun
Measuring Generalisation to Unseen Viewpoints, Articulations, Shapes and Objects for 3D Hand Pose Estimation Under Hand-Object Interaction

We study how well different types of approaches generalise in the task of 3D hand pose estimation under single hand scenarios and hand-object interaction. We show that the accuracy of state-of-the-art methods can drop, and that they fail mostly on poses absent from the trainin...

Gruber, Ivan , Ircing, Pavel , Neduchal, Petr , Hrúz, Marek , Hlaváč, Miroslav , Zajíc, Zbyněk , Švec, Jan , Bulín, Martin
An Automated Pipeline for Robust Image Processing and Optical Character Recognition of Historical Documents

In this paper, we propose a pipeline for processing of scanned historical documents into the electronic text form that could then be indexed and stored in a database. The nature of the documents presents a substantial challenge for standard automated techniques — not only ther...

Lehečka, Jan , Švec, Jan , Ircing, Pavel , Šmídl, Luboš
Adjusting BERT’s Pooling Layer for Large-Scale Multi-Label Text Classification

In this paper, we present our experiments with BERT models in the task of Large-scale Multi-label Text Classification (LMTC). In the LMTC task, each text document can have multiple class labels, while the total number of classes is in the order of thousands. We propose a&...

Řezáčková, Markéta , Tihelka, Daniel
Speaker-Dependent BiLSTM-Based Phrasing

Phrase boundary detection is an important part of text-to-speech systems since it ensures more natural speech synthesis outputs. However, the problem of phrasing is ambiguous, especially per speaker and per style. This is the reason why this paper focuses on speaker-dependent phrasing f...

Tihelka, Daniel , Hanzlíček, Zdeněk , Jůzová, Markéta
Uncertainty of Phone Voicing and its Impact on Speech Synthesis

While unit selection speech synthesis is not at the centre of research nowadays, it shows its strengths in deployments where fast fixes and tuning possibilities are required. The key part of this method is target and concatenation costs, usually consisting of features manually desi...

Tihelka, Daniel , Jůzová, Markéta , Vít, Jakub
Grappling with Web Technologies: the Problems of Remote Speech Recording

Modern web browsers are becoming operating systems of their own kind, allowing unified access to the underlying hardware. The sound device can thus be used by web-based communication systems, such a Google meet, Zoom and others. This attracts the idea of using such capabilities...

Psutka, Josef , Vaněk, Jan , Pražák, Aleš
Complexity of the TDNN Acoustic Model with Respect to the HMM Topology

In this paper, we discuss some of the properties of training acoustic models using a lattice-free version of the maximum mutual information criterion (LF-MMI). Currently, the LF-MMI method achieves state-of-the-art results on many speech recognition tasks. Some of the key features of th...

Bastl, Bohumír , Brandner, Marek , Egermaier, Jiří , Horníková, Hana , Slabá, Kristýna , Šourek, Jan , Turnerová, Eva
Comparison of Coupled and Decoupled Solvers for Incompressible Navier–Stokes Equations Solved by Isogeometric Analysis

This paper is devoted to the problem of solving the steady incompressible Navier–Stokes equations discretized by the Galerkin method on the spaces generated by the B-spline/NURBS basis functions, which is called isogeometric analysis. Two pressure-correction methods are presented for the sol...

Nedela, Roman , Ponomarenko, Ilia
Recognizing and Testing Isomorphism of Cayley Graphs over an Abelian Group of Order 4p in Polynomial Time

We construct a polynomial-time algorithm that, for a graph X with 4p We construct a polynomial-time algorithm that for a graph X with 4p vertices (p is prime), finds (if any) a Cayley representation of X over the group C2 × C2 × Cp. This result, together with&#x...

Ajgl, Jiří , Straka, Ondřej
Inverse Covariance Intersection Fusion of Multiple Estimates

Linear fusion of estimates is a basic tool for combining probabilistic data. If the correlation of estimation errors is unknown, the fusion performance is evaluated with respect to the worst case. Inverse Covariance Intersection fusion is a rule for combining two estimates with par...

Duník, Jindřich , Kost, Oliver , Straka, Ondřej , Blasch, Erik Philip
Navigation and Estimation Improvement by Environmental-Driven Noise Mode Detection

This paper deals with the state estimation of nonlinear stochastic dynamic systems, where the measurement noise is modelled by the multimodal Gaussian sum probability density function. The multimodal density is able to sufficiently capture various environmental features and phenomena affecting se...

Straka, Ondřej , Punčochář, Ivo
Hierarchical Active Fault Diagnosis for Stochastic Large Scale Systems with Coupled Faults

The paper deals with the active fault diagnosis of large scale stochastic systems with faults modeled as mutually dependent Markov chains. The system is described by multiple models representing fault-free and faulty behavior of the system. The aim of the active fault detector in&#...

Straka, Ondřej , Duník, Jindřich
Resampling-free Stochastic Integration Filter

The paper deals with the state estimation of nonlinear stochastic systems with additive Gaussian noises by means of the Gaussian filters leveraging numerical integration rules. The filters were derived under the assumption of the joint state and measurement predictive density being Gaussian,...

Ajgl, Jiří , Straka, Ondřej
Design of Confidence Sets for Estimation with Approximate Piecewise Linear Constraint

Constrained state estimation has been studied in the literature usually from the point estimation perspective. That is, a random vector is designed and its covariance matrix is searched based on contextual information available in addition to the measured data. This paper deals with...

Duník, Jindřich , Straka, Ondřej , Matoušek, Jakub
Conditional Density Driven Grid Design in Point-Mass Filter

The paper is devoted to the state estimation of nonlinear stochastic dynamic systems. The stress is laid on a grid-based numerical solution to the Bayesian recursive relations using the point-mass filter (PMF). In the paper, a novel conditional density driven grid (CDDG) design is&...

Tomiczek, Petr
Second order problem with ALP condition and unbounded nonlinearities

The nonlinear second order ordinary differential equation u''(x) + m^2 u(x) + g(x, u(x)) = f(x) , x in [0, p] , u(0) = u(p) = 0 is investigated in this article. We suppose that the nonlinearity g is unbounded and satisfies an ALP type condition. We prove...

Beran, Daniel , Li, Nan , Pfeifer, Norbert
Label errors in point cloud in training data for classification using machine learning

One of the applications of ULS (UAV-borne laser scanning) lies in power line inspection. However, with LiDAR data (i.e. point clouds) comes the need for reliable automatic classification, also called semantic segmentation, of data which allows further analysis of gathered data. Vast num...

Kottner, Radek , Bek, Lukáš , Krystek, Jan , Kroft, Roman
Failure of Blind Riveted Joint of Carbon Laminates

Thispaperdealswiththeexperimentalandnumericalinvestigationsofmechanicalbehavior of the single-lap joint of laminates consisting of TENAX-J IMS60 E13 24K carbon fibers and MSG L285 epoxy resin. TIBULB high-strength blind rivets having a diameter of 4.8 mm and 6.4 mm were used for the joint. Tension tes...

Bastl, Bohumír , Egermaier, Jiří , Brandner, Marek , Horníková, Hana , Slabá, Kristýna , Turnerová, Eva
Gradient-free and gradient-based methods for shape optimization of water turbine blade

The purpose of our work is to develop an automatic shape optimization tool for runner wheel blades in reaction water turbines, especially in Kaplan turbines. The fluid flow is simulated using an in-house incompressible turbulent flow solver based on recently introduced isogeometric anal...

Záznamy kolekce (řazeno podle Datum zaslání v sestupně pořadí): 141 až 160 z 238