A5013608234- Gamma-ray bursts and supernovae
- Astro and Planetary Science
- SAS software applications and methods
- Astronomical Observations and Instrumentation
- Adaptive optics and wavefront sensing
- Planetary Science and Exploration
- Advanced Vision and Imaging
- Optical Wireless Communication Technologies
- Infrared Target Detection Methodologies
- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- CCD and CMOS Imaging Sensors
- Calibration and Measurement Techniques
- Astrophysics and Cosmic Phenomena
- Astrophysical Phenomena and Observations
- Pulsars and Gravitational Waves Research
- Advanced Photonic Communication Systems
- Image and Signal Denoising Methods
- Medical Imaging Techniques and Applications
- Image and Video Quality Assessment
- Semiconductor Lasers and Optical Devices
- Video Surveillance and Tracking Methods
- Tactile and Sensory Interactions
- Advanced Data Compression Techniques
- Particle Detector Development and Performance
Czech Technical University in Prague
2015-2024
Academy of Performing Arts in Prague
2017
Instituto de Astrofísica de Andalucía
2006-2010
CKD Elektrotechnika (Czechia)
2010
Consejo Superior de Investigaciones Científicas
2006-2008
Smithsonian Astrophysical Observatory
1997
Hyperspectral imaging (HSI) is widely applied in various industries, enabling detailed analysis of material properties or composition through their spectral signatures. However, for classification construction and demolition waste (CDW) materials, HSI impractical since real-time sorting requires rapid data acquisition lightweight classification. Instead, fitting selected narrowband filters onto standard cameras can achieve comparable results with substantially reduced computational overhead....
The quasar 3C 279 was the target of an extensive multiwavelength monitoring campaign from 2006 January through April. An optical-IR-radio by Whole Earth Blazar Telescope (WEBT) collaboration organized around target-of-opportunity X-ray and soft γ-ray observations with Chandra INTEGRAL in mid-January, additional coverage RXTE Swift XRT. In this paper we focus on results WEBT campaign. source exhibited substantial variability optical flux spectral shape, a characteristic timescale few days....
The importance of detection parking space availability is still growing, particularly in major cities. This paper deals with the design a distributed wireless camera system for management spaces, which can determine occupancy based on information from multiple cameras. proposed uses small modules Raspberry Pi Zero and computationally efficient algorithm histogram oriented gradients (HOG) feature descriptor support vector machine (SVM) classifier. We have included about orientation vehicle as...
In this Letter, we develop a novel technique, to the best of our knowledge, increase link span ($ {L_s} $Ls) rolling shutter (RS)-based optical camera communications (OCC) system by reducing spatial bandwidth in out-of-focus regions. We demonstrate 400 m line-of-sight RS-based OCC link, which is date longest $ $Ls reported these systems, and detection method extract information out video frames, successfully. The proposed relaxes condition large surface area for transmitter light source....
In optical camera communications (OCC), the provision of both flicker-free illumination and high data rates are challenging issues, which can be addressed by utilizing rolling-shutter (RS) property image sensors as receiver (Rx). this paper, we propose an RS-based multiple-input multiple-output OCC scheme for Internet things (IoT) application. A simplified design multi-channel transmitter (Tx) using a 7.2 × cm2 small 8 distributed light emitting diode (LED) array, based on grouping LEDs, is...
We present multiwavelength (optical/near infrared/millimetre) observations of a short duration gamma-ray burst detected by Swift (GRB 050509b) collected between 0 seconds and ∼18.8 days after the event.No optical, near infrared or millimetre emission has been in spite well localised X-ray afterglow, confirming elusiveness events.We also discuss possibility being located cluster galaxies at z = 0.225 beyond.In former case, spectral energy distribution neighbouring, potential host galaxy,...
The existence of asteroidal meteoroid streams capable producing meteorite-dropping bolides has long being invoked, but evidence is scarce. Recent modelling previously reported associations suggests that the time-scales to keep orbital coherence these meteorites are too short. We present an unequivocal association between near earth object (NEO) 2002NY40 and at least one bright fireball detected over Finland in 2006 August. Another two additional fireballs recorded from Spain seem be related,...
A very bright fireball called Béjar (SPMN110708), with a maximum brightness of −18, was observed over much Spain as well parts Portugal and France on 2008 July 11 at 21:17:39 utc. Fortuitously, it flew many the instruments that are part Spanish Meteor Fireball Network so accurate measurements its properties were recorded. We describe these observations make deductions from them regarding nature origin body gave rise to this fireball. The bolide first became visible height 98.3 km, attained...
Visible-light communication (VLC) is an emerging technology utilizing light-emitting diodes and photodetectors (PDs) cameras [i.e., image sensors (ISs)] as the transmitter receivers (Rx), respectively, for simultaneous data communications, illumination, localization, sensing in indoor optical Internet of Things. We propose a single-input–multiple-output (SIMO) hybrid VLC system using PD-based IS-based Rxs high-speed low-speed (i.e., <inline-formula...
We present a discovery and observation of an extraordinarily bright prompt optical emission the GRB 060117 obtained by wide-field camera atop robotic telescope FRAM Pierre Auger Observatory from 2 to 10 minutes after GRB. found rapid average temporal flux decay alpha = -1.7 +- 0.1 peak brightness R 10.1 mag. Later observations other instruments set strong limit on radio transient fluxes, unveiling unexpectedly further decay. interpretation featuring relatively steep electron-distribution...
The inclusion of organic light emitting diodes (OLEDs) in high‐end devices, such as TVs and smart‐phones, along with the insertion cameras embedded daily use provides opportunity to establish optical camera communication (OCC) systems based on OLED emitters for Internet Things (IoT). This Letter presents an experimental demonstration this OLED‐based OCC system IoT. results suggest that despite low emitted power long range links can be established OCC. One outdoor two indoor scenarios are...
RTS2, or Remote Telescope System, 2nd Version, is an integrated package for remote telescope control under the Linux operating system. It designed to run in fully autonomous mode, picking targets from a database table, storing image meta data database, processing images and their WCS coordinates offering Virtual-Observatory enabled access them. currently running on various setups world-wide. For of devices manufacturers we developed abstract device layer, enabling all possible combinations...
The present work introduces an intelligent system for sound source localization and classification, focusing on the critical task of detecting emergency vehicle sirens. Leveraging STM32F411RE microcontroller SPH0645LM4H microphones, methodology combines generalized crosscorrelation with phase transformation precise localization, alongside Mel Frequency Cepstral Coefficients (MFCC) robust signal processing. A neural network model, expertly trained deployed microcontroller, enables real-time...
Four years of BOOTES-1B GRB follow-up history are summarised for the first time in form a table. The successfully followed events described case by case. Further, data used to show trigger rate Spain on per-year basis, resulting an estimate 18 triggers and about 51 h telescope per year real triggers. These numbers grow 22 77 if we include also GRBs observable within 2 hours after trigger.