Jan Kubíček

Jan Kubíček
VŠB-Technical University of Ostrava · Faculty of Electrical Engineering and Computer Science

Master of Engineering

About

128
Publications
20,855
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309
Citations
Additional affiliations
September 2012 - present
FEI Company
Position
  • PhD Student

Publications

Publications (128)
Article
Full-text available
The analysis and segmentation of articular cartilage magnetic resonance (MR) images belongs to one of the most commonly routine tasks in diagnostics of the musculoskeletal system of the knee area. Conventional regional segmentation methods, which are based either on the histogram partitioning (e.g., Otsu method) or clustering methods (e.g., K-means...
Article
Full-text available
Wavelet transform (WT) is a commonly used method for noise suppression and feature extraction from biomedical images. The selection of WT system settings significantly affects the efficiency of denoising procedure. This comparative study analyzed the efficacy of the proposed WT system on real 292 ultrasound images from several areas of interest. Th...
Article
the work has been aimed to create an overview of available and used methods and ways to determine the concentration of glucose in body fluids, especially from a technical point of view. It also provides an overview of the clinical features of these methods. The survey found that today's market offers a large number of options and approaches to the...
Article
Full-text available
This work analyses the results of research regarding the predisposition of genetic hematological risks associated with secondary polyglobulia. The subjects of the study were selected based on shared laboratory markers and basic clinical symptoms. JAK2 (Janus Kinase 2) mutation negativity represented the common genetic marker of the subjects in the...
Article
Full-text available
In the area of musculoskeletal MR images analysis, the image denoising plays an important role in enhancing the spatial image area for further processing. Recent studies have shown that non-local means (NLM) methods appear to be more effective and robust when compared with conventional local statistical filters, including median or average filters,...
Article
Full-text available
In this work, a MATLAB-based graphical user interface is proposed for the visual examination of several eye movements. The proposed solution is algorithm-based, which localizes the area of the eye movement, removes artifacts, and calculates the view trajectory in terms of direction and orb deviation. To compute the algorithm, a five-electrode confi...
Article
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There are various modern systems for the measurement and consequent acquisition of valuable patient’s records in the form of medical signals and images, which are supposed to be processed to provide significant information about the state of biological tissues [...]
Article
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Wearable devices are commonly used to monitor human movement since motor activity is a fundamental element in all phases of a person’s life. Patients with motor disorders need to be monitored for a prolonged period and the battery life can be a limit for such a goal. Here the technique of harvesting energy from body heat to supply energy to wearabl...
Chapter
Full-text available
This paper describes the concept of laboratory process based on measuring cardiac output using pulmonary artery thermodilution (trans-right-heart thermodilution) method. The blood circulation is in the process simulated by simple water flow in the measuring chain driven by water pump. Measuring is performed by Swan-Ganz catheter used in medical pra...
Article
In the area of biomedical signal monitoring, wearable electronics represents a dynamically growing field with a significant impact on the market of commercial products of biomedical signal monitoring and acquisition, as well as consumer electronic for vital functions monitoring. Since the electrodes are perceived as one of the most important part o...
Article
Full-text available
Retinal blood vessel segmentation plays an important part in the early diagnosis and treatment of eye disease. It is a tool for ophthalmologists. Many diseases can be identified by examining manifestations and images of blood vessels, including diabetic retinopathy, retinopathy of prematurity, age-related macular degeneration, retinopathy due to hy...
Article
Full-text available
Wavelet transformation is one of the most frequent procedures for data denoising, smoothing, decomposition, features extraction, and further related tasks. In order to perform such tasks, we need to select appropriate wavelet settings, including particular wavelet, decomposition level and other parameters, which form the wavelet transformation outp...
Article
Full-text available
In this paper, a new approach for the periodical testing and the functionality evaluation of a fetal heart rate monitor device based on ultrasound principle is proposed. The design and realization of the device are presented, together with the description of its features and functioning tests. In the designed device, a relay element, driven by an e...
Article
Full-text available
The subject of the submitted work is the proposal of electrodes for the continual measurement of the glucose concentration for the purpose of specifying further hemodynamic parameters. The proposal includes the design of the electronic measuring system, the construction of the electrodes themselves and the functionality of the entire system, verifi...
Article
Full-text available
For the retinal blood vessels segmentation, we used a method, which is based on the morphological operations. The output of this process is extracted retinal binary image, where is situated main blood vessels. In this paper is used dataset of images (2800 images) from device RetCam3. Before applying the image processing, it was selected 30 images w...
Cover Page
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Call for Papers for Special Issue "Modern Trends and Applications of Intelligent Methods in Biomedical Signal and Image Processing" [Sensors, IF 3.031] I am serving as the guest editor of Special Issue "Modern Trends and Applications of Intelligent Methods in Biomedical Signal and Image Processing" in Sensors. It is now open for submission of full...
Chapter
Full-text available
The paper describes the implementation of non-hierarchical methods k-means and fuzzy c-means on nosily images from different medical modalities as computed tomography and magnetic resonance. Modern devices are created on the basis of advanced technology, both during the actual acquisition of the image and subsequently during its processing. The pro...
Chapter
Full-text available
Image processing plays a key role in many medical imaging applications, by automation and making delineation of regions of interest more simple. The paper describes image processing such as image properties, noise generators and edge detectors. The work deals with methods of edge detection in biomedical images using real data sets. The aim of this...
Chapter
Full-text available
The subject of this work is to create an electronic database and its graphical interface with subsequent evaluation of the effect of outpatient pleoptic-orthoptic exercises. The resulting software stores data in a database, works with already stored data and is able to generate time trends for statistical evaluation. The database was created using...
Chapter
Full-text available
Despite knowing the electrogastrography (EGG) for many years, there are still open issues regarding its measurement and processing. In the comparison with other electrophysiological signals, like is electrocardiography (ECG), we still miss a unified scheme for the placement of electrodes and EGG evaluation. In this paper, we analyze the possibiliti...
Article
Full-text available
The operating cost minimization of smart homes can be achieved with the optimization of the management of the building's technical functions by determination of the current occupancy status of the individual monitored spaces of a smart home. To respect the privacy of the smart home residents, indirect methods (without using cameras and microphones)...
Chapter
This paper deals with the analysis and modeling of the retinal blood vessels system. The aim of the analysis is the design and implementation of a fully automated segmentation model based on the morphological segmentation, allowing for extraction of the blood system area within the binary model, where other retinal structures are suppressed. An imp...
Article
Full-text available
Computer-assisted orthopedic surgery (CAOS) systems have become one of the most important and challenging types of system in clinical orthopedics, as they enable precise treatment of musculoskeletal diseases, employing modern clinical navigation systems and surgical tools. This paper brings a comprehensive review of recent trends and possibilities...
Conference Paper
Full-text available
Knee cartilage segmentation has been challenging task for many years. This task is usually connected with two major issues. First object of interest is automatic detection and extraction of knee cartilage shape. Second important issue is detection of osteoarthritis, especially, in early stages. This early deterioration is badly recognizable from na...
Conference Paper
Full-text available
Contemporary medical devices are a complex technical structure that involves complex of material-technological structures that are structurally linked to functional systems that are then in direct interaction with different levels of biological structures (nitrous tissue structures, hemocompatibility as a separate problem, skin surface, eye cornea...
Chapter
Nowadays, the use of X-ray is an important part of imaging techniques used in medicine. The resulting skiagraphy images are kept in the workplace and can be influenced by secondary radiation, which occurs as a secondary effect when irradiated with X-rays. This secondary radiance has not to effect only for the skiagraphy images but also for the huma...
Chapter
In this paper, it was using segmentation based on Gabor transformation for extraction the retinal blood vessels. The algorithm has been applied on images from freely accessible DRIVE and STARE databases. The segmentation algorithm provides the possibility of automatic modeling and consequent extraction of the retinal vascular system. Resultant imag...
Chapter
Alcohol detection is a challenging issue due to many aspects, especially to security reasons. Conventional measuring systems usually utilize a direct contact with the human body to obtain on spot alcohol level estimation. Nevertheless, it is well known that there are several side effects including the facial temperature distribution for alcohol det...
Chapter
In Smart Home Care (SHC) rooms from the measured operational and technical quantities for monitoring activities of every day of life for support of independent life for elderly people. The proposed algorithm for data processing (predicting the CO2 course using neural networks from the measured temperature indoor Ti (°C), temperature outdoor To (°C)...
Article
Full-text available
Alcohol intoxication is a significant phenomenon, affecting many social areas, including work procedures or car driving. Alcohol causes certain side effects including changing the facial thermal distribution, which may enable the contactless identification and classification of alcohol-intoxicated people. We adopted a multiregional segmentation pro...
Article
Full-text available
Articular cartilage assessment, with the aim of the cartilage loss identification, is a crucial task for the clinical practice of orthopedics. Conventional software (SW) instruments allow for just a visualization of the knee structure, without post processing, offering objective cartilage modeling. In this paper, we propose the multiregional segmen...
Chapter
In the nineties of the twentieth century, radiofrequency medical instruments were developed and used in abdominal and hepatic surgery. The author of many radiofrequency operating instruments and surgical techniques for use in hepatic surgery is Professor Nagy Habib, according to which these tools and methods are named. These techniques are followed...
Article
Full-text available
Clinical retinal image analysis is an import aspect of clinical diagnosis in ophthalmology. Retinopathy of Prematurity (ROP) represents one of the most severe retinal disorders in prematurely born infants. One of the ROP clinical signs is the presence of retinal lesions endangering the vision system. Unfortunately, the stage and progress of these f...
Article
Full-text available
Standard solutions for handling a large amount of measured data obtained from intelligent buildings are currently available as software tools in IoT platforms. These solutions optimize the operational and technical functions managing the quality of the indoor environment and factor in the real needs of residents. The paper examines the possibilitie...
Article
Full-text available
One of the most challenging issues of the radiotherapy is a fixation of the movable cancer volumes by influence of breathing. A reliable fixation leads to reducing of ambient tissues damage. In this paper, we propose a measurement chain for a real-time telemetry recording of the breathing activity within the radiotherapy. During the CT radiotherapy...
Article
Full-text available
Biopotential electrodes are essential for measurements of biological signals. There are many different manufacturers and many different types of electrodes on the market. Essential parameters such as impedance, distortion and phase angle are often not disclosed by the manufacturer. This work presents a simple device that can be used to test electri...
Preprint
Full-text available
This article describes the use of the PI ProcessBook software tool for visualization and indirect monitoring of occupancy of SHC rooms from the measured operational and technical quantities for monitoring of daily living activities for support of independent life of elderly persons. The proposed method for data processing (predicting the CO2 course...
Article
Full-text available
Abstract In a clinical practice of the angiography, the blood vessel analysis is substantially important mainly in a sense of an objectification and modeling of the pathological spots such as the blood vessel calcifications. An amount of the calcification is commonly just estimated by naked eyes; therefore, the automatic modeling may be beneficial...
Conference Paper
In the field of the clinical orthopedics, articular cartilage is one of the essential object which is evaluated. From the clinical point of view, the early osteoarthritis changes are increasingly challenging especially due to their insufficient contras against image background. Therefore, those findings are often only subjectively estimated from MR...
Chapter
The Real-time Locating Systems (RTLS) are also well known as real-time location systems have recently become significantly important part of many location aware systems. RTLS systems are primarily used for the object tracking placed indoor. This area relates to the healthcare environment where tracking and monitoring of patients are important. The...