The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Due to massive advantages of short range communication technologies such as NFC and RFID, they are ubiquitously utilized in many fancy and sensitive applications. During last decade, there have been impressive endeavors to design efficient authentication protocols which can provide secure and anonymous communication for end-users. In this research, we formally analyze a recently improved authentication...
The present research work introduces a novel VLSI design of Context-Based Adaptive Variable Length Coding (CAVLC) entropy encoder. The proposed design is intended to be used for H.264/AVC CAVLC entropy encoder. The architecture is designed to be used as a part of a comprehensive H.264 video coding system. This hardware works in parallel and pipelined fashion and demonstrates a fair trade-off between...
Cortisol, a hormone commonly released upon increased stress level, is a biomarker for numerous diseases and plays an important role in the regulation of various physiological processes. Normally a cortisol level is elevated in oral saliva during the time of anxiety and depression. A portable biosensor device could provide an interesting digital instrument to the patients and people who desire precautionary...
The use of clinical practice guidelines to improve quality of care has been a vividly discussed topic. Clinical practice guidelines (CPG) aim to improve the health of patients by guiding individual care in clinical settings. CPGs bring potential benefits for patients by improving clinical decision making, improving efficiency and enhancing patient care, while essentially optimizing financial value...
Motion vectors extracted from a compressed video file can be used to track objects in the video and it could be efficient as motion vectors provide trajectory information of the objects. However, tracking objects represented by the motion vectors can be inaccuracy because of camera movement, small size sets of motion vectors acting as noise, unmoving of the object and occlusion. These are conditions...
We present OCSB, a novel online Bayesian framework for imbalance multi-class data streams. To the best of our knowledge, OCSB is the first online method applying both cost-sensitive learning and sampling technique in a single classifier to deal with class imbalance learning. Specifically, an artificial cost matrix is designed and adapted in a sequential manner to not only boost the accuracy of minority...
With the development of displaying techniques, free viewpoint video (FVV) system shows its potential to provide immersive perceptual feeling by changing viewpoints. To provide this luxury, a large number of high quality views have to be synthesised from limited number of viewpoints. However, in this process, a portion of the background is occluded by the foreground object in the generated synthesised...
This paper suggests a new method for image registration, based on a new similarity measure, the standard deviation normalized summed squared difference. Such a similarity measure is explicitly defined on the effective overlap between two images, and the image registration is fulfilled by searching for a global minimum peak of this measure over the entire parameter space. Conceptually the suggested...
We have developed a GaAs-based Blocked-Impurity-Band (BIB) Detector for the application of Terahertz (THz) security check and astronomical observation. In this work, we have fabricated GaAs:Si and GaAs:Te BIB detectors and analyzed their spectral response characteristics at 3.5K The experimental results of GaAs:Si BIB device demonstrate that the spectral response increases when the bias rises from...
This paper reports optical fibers for low-loss coupling with silicon photonic circuits. We fabricate both singlemode fibers and polarization-maintaining fibers with a mode field diameter of 4 pm for matching with an edge coupler. We demonstrate fusion splicing with standard transmission fibers and optical coupling with silicon photonic devices. Low-loss splicing is achieved by utilizing the thermally...
The non-iterative algorithm that reveals the general physical basis of measuring processes and instrumental (computer) computations is proposed and investigated. The algorithm is based on the previously proposed postulate and consists in finding the optimal, locally defined width of the averaging interval. The optimal width of the interval provides the smallest error when measuring or computing the...
Color and texture have been proven to be very discriminant attributes in image analysis across many works. This paper proposes a color texture analysis method based on the graph theory, in which we convert the texture in question into an undirected weighted graph and explore the shortest paths between four pairs of pixels according to different scales and orientations of the image. Basically, we extend...
The HEVC standard is one of the newest video coding standards developed to face the upcoming challenges concerning video processing. HEVC allows only one type of entropy encoder, which is the CABAC (Context Adaptive Binary Arithmetic Coding), responsible for the symbolic data representation in order to translate the final video bitstream to a smaller number of bits. This work presents hardware architecture...
This work presents a low-area scalable architecture for the Depth Modelling Mode 1 (DMM-1) encoder of the 3D High Efficiency Video Coding (3D-HEVC) standard, removing the refinement stage. This simplification causes a small BD-rate increase (0.09%) but a significant reduction in memory usage of 30%. The scalable architecture can support different block sizes. Synthesis results for ST 65 nm Standard...
Internet of Things (IoT) is a topic of growing interest and intensive research in industry, technological centers and academy, where data communication is one of its most relevant aspects. Since IoT is an open field for new applications, it does not have yet a standard communication protocol. This paper presents the system level design of a WiFi receiver supporting the novel low power standard IEEE...
The HEVC is one of the most recent video coding standards, developed in order to face upcoming challenges, due to higher video quality and resolution. One of the HEVC components is the entropy encoder, which consists only of the Context Adaptive Binary Arithmetic Coding (CABAC) algorithm. The CABAC algorithm imposes some severe difficulties in order to achieve increasing throughput, due to the high...
The demand for higher quality video has increased in the past few years, due to the huge amount of electronic devices that process digital video in even higher resolutions. For that purpose, video coding techniques are used, which have, as main goal, the reduction of the required representation to process a digital video. Furthermore, embedded hardware video solutions are sought for both industry...
Fast, on time and large transport capacity, cleaning and other factors make cities gradually increasing demand for urban rail transit, and demand is growing faster than construction speed, so it is necessary to ensure the transport capacity to improve the operations quality of service. At the same time the discretion of the rail transit quality of service affect the choice of rail transit passenger...
With the application of modern communication, control and measurement technology based on microelectronics and computer, a large number of microelectronic devices have been applied in the power generation, transmission and production links of power plants. In order to ensure the safe operation of all kinds of electronic equipment, it is necessary to install surge protector (SPD). In this paper, MATLAB...
The evaluation of intelligent transformation level of primary equipment in substation is an important part of the second batch of intelligent substation pilot project. In this paper, pilot projects for the transformation of smart substations in several regional power grids are extensively investigated, of which the following work is done on the basis: Firstly, the evaluation model of intelligent transformation...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.