Publikācijas

729 publikācijas

• 2015

  Mobile phone based laser speckle contrast imager for assessment of skin blood flow

  AKOVELS, D., SAKNĪTE, I., KRIEVIŅA, G., ZAHARANS, J., SPIGULIS, J.

  Kopsavilkums

  <p>AKOVELS, D., SAKNĪTE, I., KRIEVIŅA, G., ZAHARANS, J., SPIGULIS, J., 2015. Mobile phone based laser speckle contrast imager for assessment of skin blood flow. Eighth International Conference on Advanced Optical Materials and Devices (AOMD-8), Proc. of SPIE Vol.9421, 94210J. 25-27. Aug. 2014, Rīgā.</p>
• 2015

  Registration Method for Multispectral Skin Images

  KADIĶIS R.

  Kopsavilkums

  <p><img class=" wp-image-6941 aligncenter" src="/storage/wp/2019/07/block_scheme-300x45.png" alt="" width="533" height="80" /></p> <p>A feature-based image registration method is presented for the use on the multispectral skin images. The proposed method allows the use and combination of different kinds of feature points, so it can be adjusted to different applications. The local minima and maxima are used as features for the skin images. By analyzing all possible shifts among feature points in the reference and sensed images, the proposed method efficiently finds translation among these images. The method is expanded to also determin e rotation and scale. The proposed method is compared with other area-based and feature-based methods (proposed in the literature specifically for skin images) by testing those methods on a set of multispectral skin images.</p> <p><a href="https://ieeexplore.ieee.org/abstract/document/7129018">Kadikis, R. (2015, April). Registration method for multispectral skin images. In <i>2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA)</i> (pp. 232-235). IEEE.</a></p> <p><a href="https://makonis.edi.lv/s/pdPgFi5rCoRTDWq">pdf</a></p> <p><img class="alignnone size-medium wp-image-6942" src="/storage/wp/2019/07/distance_calculation-300x188.png" alt="" width="300" height="188" /></p>
• 2015

  An evaluation the motion of a reconfigurable mobile robot over a rough terrain

  BAUMS, A., GORDYUSINS, A.

  Kopsavilkums

  <p>BAUMS, A., GORDYUSINS, A., 2015. An evaluation the motion of a reconfigurable mobile robot over a rough terrain. Automatic Control and Computer Sciences, Allerton Press, Inc., vol.49. no.5, pp. 39- 45</p>
• 2015

  Improving object transparent vision using enhanced image selection

  Jānis Judvaitis, Igors Homjakovs, Ričards Cacurs, Krišjānis Nesenbergs, Atis Hermanis, Kaspars Sudars

  Kopsavilkums

  <p>J. Judvaitis, I. Homjakovs, R. Cacurs, K. Nesenbergs, A. Hermanis, K. Sudars, 2015. Improving object transparent vision using enhanced image selection, Automatic Control and Computer Sciences, Vol. 49, Nr. 6, 2015, pp</p> <p>All authors:</p> <p>Jānis Judvaitis, Igors Homjakovs, Ričards Cacurs, Krišjānis Nesenbergs, Atis Hermanis, Kaspars Sudars.</p> <p><strong>Abstract:</strong></p> <p>In this paper we try to improve object transparent vision. Our goal is to see how object transparent vision can be improved by: 1. Automated fused image correctness check. 2. Finding correct images for image fusing. We also conducted several experiments related to object transparent vision in order to gain better understanding of subject. The introduced improvements in the paper can provide reasonable result for image fusion for most of the analyzed cases.</p>
• 2015

  Multi-channel data acquisition and optical transmission supported by Event Timers

  BILINSKIS, I., BOOLE, E., SKAGERIS, A.

  Kopsavilkums

  <p>BILINSKIS, I., BOOLE, E., SKAGERIS, A., 2015. Multi-channel data acquisition and optical transmission supported by Event Timers. Proc. of Advances in Wireless and Optical Communications 2015 (RTUWO'), Riga, November 5, 6, pp. a1-a4.</p>
• 2015

  DiStAL: Digitally Steerable Antennas for Localization

  SELAVO, L., DRIKIS, I., MEDNIS, A., BALASS, R.

  Kopsavilkums

  <p>SELAVO, L., DRIKIS, I., MEDNIS, A., BALASS, R., 2015. DiStAL: Digitally Steerable Antennas for Localization, Technical report, Microsoft Indoor Localization Competition, 2015. (cits)</p>
• 2015

  Algorithms for a Novel Touchless Bimodal Palm Biometric System

  NIKISINS, O., EGLITIS, T., PUDZS, M., GREITANS, M.

  Kopsavilkums

  <p>NIKISINS, O., EGLITIS, T., PUDZS, M., GREITANS, M., 2015. Algorithms for a Novel Touchless Bimodal Palm Biometric System, The 8-th International Conference on Biometrics (ICB-2015), May 2015. (IEEE)</p>
• 2015

  Data Management in TestBed for Large Scale Wireless Sensor Networks

  SALMINS, A., OZOLS, K., RUSKULS, R.

  Kopsavilkums

  <p>SALMINS, A., OZOLS, K., RUSKULS, R., 2015. Data Management in TestBed for Large Scale Wireless Sensor Networks. RTUWO 2015: Advances in Wireless and Optical Communications, Riga, Latvia, November 5-6, 2015<br /> Abstract</p> <p>Wireless sensor network (WSN) testbed design challenges can be divided into three main sub-categories: architectural, hardware and software. By considering all these challenges, an optimal solution was found and EDI TestBed created. In this paper, a method, which solves software related problems in large scale WSN testbed, such as how to distribute computational resources, control all of the testbed devices and how to efficiently acquire and structure the data, is described. The experimental test results shows that proposed method is advantageous for large scale testbeds (more than 20 sensor nodes), and its efficiency increases rapidly if the number of sensor nodes in testbed increases.</p>
• 2015

  Wearable sensor grid architecture for body posture and surface detection and rehabilitation

  HERMANIS, A., CACURS, R., NESENBERGS, K., GREITANS, M., SYUNDYKOV, E., and SELAVO, L.

  Kopsavilkums

  <p>HERMANIS, A., CACURS, R., NESENBERGS, K., GREITANS, M., SYUNDYKOV, E., and SELAVO, L., 2015. Wearable sensor grid architecture for body posture and surface detection and rehabilitation. In Proceedings of the 14th International Conference on Information Processing in Sensor Networks (IPSN '15). ACM, Seattle, WA, USA, 414-415.<br /> Abstract: We propose a hybrid architecture of wired and wireless sensors for smart fabric with applications including body dynamics and shape monitoring and patient rehabilitation. Our system is capable of acquiring data from up to 200 on-body sensors with 50Hz sampling rate using conventional low-cost hardware. The sensing and data processing is done in real time and the results available on a smaptphone, tablet or pc in 3D visual form or as alerts. The user experience of the demo will include trying out smart clothing that is enabled with the shape sensing fabric and observing the body shape dynamics on-screen in real time.</p>
• 2015

  Adding complexity-reduced filtering of signals to functions of a high resolution Event Timer system

  SUDARS, K., BILINSKIS, I., BOOLE, E.

  Kopsavilkums

  <p>SUDARS, K., BILINSKIS, I., BOOLE, E., 2015. Adding complexity-reduced filtering of signals to functions of a high resolution Event Timer system, MAREW-2015, 25th International Conference Radioelektronika 2015, Proceedings of MAREW-2015 pp.129-132, 2015.</p>
• 2015

  Implementation of reception and real-time decoding of ASDM encoded and wirelessly transmitted signals

  OZOLS, K.

  Kopsavilkums

  <p>OZOLS, K., 2014. Implementation of reception and real-time decoding of ASDM encoded and wirelessly transmitted signals. Microwave and Radio Electronics Week 2015 (MAREW2015), Pardubice, Czech Republic, April 21-23, 2015<br /> Abstract: "This paper describes an implementation of reception and real-time decoding of Asynchronous Sigma-Delta modulator (ASDM) encoded and wirelessly (On-off keying) transmitted signals. By using Fast reconstruction algorithm it is possible to reconstruct the original signal ≈ 25 times faster than by Classical reconstruction algorithm, if the signal lenght is 1 second, and ≈ 61, ≈ 130 and ≈ 228 times faster, if the length of the signal is 2, 4 and 8 seconds, respectively. Developed overall system consists of 3 parts - superheterodyne receiver, digitizer, PC with adaptive data reconstruction algorithm. Real-time decoding algorithm, which consist of data acquistion, filtering, processing, reconstruction and vizualization is implemented in LabView as a virtual instrument with graphical user interface (GUI)."</p>
• 2015

  Diameter control for silicon rod growth

  FUKSIS, R., PUDZ, M., KRAVTSOV, M., KRAVTSOV, A.

  Kopsavilkums

  <p>FUKSIS, R., PUDZ, M., KRAVTSOV, M., KRAVTSOV, A., 2015. Diameter control for silicon rod growth. 5th International Workshop on Computer Science and Engineering: Information Processing and Control Engineering, WCSE 2015-IPCE</p>
• 2015

  Ingot Pulling with Electron Beam Heating: Process Enhancements

  KRAVTSOV, A., KRAVTSOV, A., FUKSIS, R., PUDZ, M.

  Kopsavilkums

  <p>KRAVTSOV, A., KRAVTSOV, A., FUKSIS, R., PUDZ, M.,2015. Ingot Pulling with Electron Beam Heating: Process Enhancements. 42nd IEEE Photovoltaic Specialists Conference, New Orleans, USA</p>
• 2015

  Electron beam melting with digital image processing in obtaining float-zone silicon rods - an advanced material for high - performance solar panels

  FUKSIS, R., PUDZ, M., KRAVTSOV, A., KRAVTSOV, A.

  Kopsavilkums

  <p>FUKSIS, R., PUDZ, M., KRAVTSOV, A., KRAVTSOV, A., 2015. Electron beam melting with digital image processing in obtaining float-zone silicon rods - an advanced material for high - performance solar panels. EuroNanoForum 2015, Riga, Latvia</p>
• 2015

  Face recognition system on Raspberry Pi

  NIKISINS, O., FUKSIS, R., KADIKIS, A., GREITANS, M.

  Kopsavilkums

  <p>NIKISINS, O., FUKSIS, R., KADIKIS, A., GREITANS, M., 2015. Face recognition system on Raspberry Pi. International Conference on Information Processing and Control Engineering (ICIPCE-2015), Moscow, Russia, 15-17 April<br /> Olegs Nikisins, Rihards Fuksis, Arturs Kadikis, Modris Greitans, “Face recognition system on Raspberry Pi”, International Conference on Information Processing and Control Engineering (ICIPCE-2015), Moscow, Russia, 15-17 April</p>
• 2015

  Measuring the Radius of Meniscus Ring During the Growth of Silicon Rods

  FUKSIS, R., PUDZ, M., KRAVTSOV, A.

  Kopsavilkums

  <p>FUKSIS, R., PUDZ, M., KRAVTSOV, A., 2015. „Measuring the Radius of Meniscus Ring During the Growth of Silicon Rods”, Image Analysis, Vol 9127, Lecture Notes in Computer Science, SCIA pp 462-471.</p>
• 2015

  Object transparent vision combining multiple images from different views

  Jānis Judvaitis, Igors Homjakovs, Ričards Cacurs, Krišjānis Nesenbergs, Atis Hermanis, Kaspars Sudars

  Kopsavilkums

  <p><span lang="EN-GB">J. Judvaitis, I. Homjakovs, R. Cacurs, K. Nesenbergs, A. Hermanis, K. Sudars, Object transparent vision combining multiple images from different views, Automatic Control and Computer Sciences, Volume 49, Issue 5, pp. 313-320, 2015. doi: DOIhttps://doi.org/10.3103/S0146411615050053<br /> </span></p> <p>All authors:</p> <p>Jānis Judvaitis, Igors Homjakovs, Ričards Cacurs, Krišjānis Nesenbergs, Atis Hermanis, Kaspars Sudars</p> <p><strong>Abstract:</strong></p> <p>Augmented reality (AR) has been studied extensively and used widely in various fields. In AR a view of reality is modified or supplemented by computer-gene-rated sensory input such as sound, video, etc. As a result, it can enhance one’s current perception of reality. In this paper we analyzed methods to make objects transparent by fusing images taken from two different cameras. Induced transparency could be particularly interesting for traffic applications. When two cars are driving one after another and the car in front can block the view for the second car, however, if both cars are equipped with cameras capturing the front view, their images can be merged and the front car can be made transparent allowing driver to have clear picture about obstacles and other dangers on the road. The goal of this paper is to analyze various solutions that can provide such transparency effect and also to create a solution that can work in real-time.</p>
• 2015

  An Investigation of Non-traditional Approach to Narrowing the GPR Pulse

  ARISTOV, V., SHAVELIS, R., SHUPOLS, G., and CIRULIS, R.

  Kopsavilkums

  <p>ARISTOV, V., SHAVELIS, R., SHUPOLS, G., and CIRULIS, R. 2015. An Investigation of Non-traditional Approach to Narrowing the GPR Pulses. 25th International Conference “Radioelektronika 2015”. Pardubice, Czech Republic, 21-22</p> <p>Abstract—In this paper an investigation is carried out on how to decrease the time duration of the pulses used in a GPR system. The basic idea is to change the waveform of the pulses which are applied to the transmit antenna in order to flatten the spectrum of the received pulses. The experimental and simulation results of the obtained signals are provided.</p>
• 2015

  Signal With Linear Distortions Restoration Experiments for Stroboscopic Comparator-Based Converters

  HERMANIS, E., SHUPOLS, G., SHAVELIS, R., ARISTOV, V.

  Kopsavilkums

  <p>HERMANIS, E., SHUPOLS, G., SHAVELIS, R., ARISTOV, V., 2015. Signal With Linear Distortions Restoration Experiments for Stroboscopic Comparator-Based Converters, Automatic Control and Computer Sciences, Vol. 49, No. 6, 2015, pp. 390-394.</p>
• 2015

  Classification of Multisensor Images with Different Spatial Resolution

  LORENCS, A., MEDNIEKS, I., SINICA-SINAVSKIS, J.

  Kopsavilkums

  <p>LORENCS, A., MEDNIEKS, I., SINICA-SINAVSKIS, J., 2015. Classification of Multisensor Images with Different Spatial Resolution, Electronics and Electrical Engineering, Vol. 21, No. 5, pp.81-85</p>