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    Wyświetlanie 1-5 z 5
    Tytuł:
    The histogram-enhanced Hough transform applied to automated readout of analogue gauge meters using digital image processing
    Autorzy:
    Pociecha, D.
    Żyłka, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/114270.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    metrology
    computer vision
    digital image processing
    Opis:
    The paper presents a computer vision technique developed for automated reading of analogue gauge meters. The system utilizes a mobile phone digital camera for image stream capturing and the Hough transform supplemented by multiply histogram analysis for locating a pointer position and parallax effect correction. The system is capable of working with minimal user supervision and its indicator position detection uncertainty is superior to that provided by a human eye. An attempt to use the algorithm implementation for semi-automatic calibration of an analogue voltmeter is also presented.
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 11; 507-511
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of Dynamic Parameters of Mechanical Constructions Based on Wavelet Analysis of Vibration Signals
    Autorzy:
    Bartmański, C.
    Staniek, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/114176.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    vibroacoustics
    digital signal processing
    wavelet analysis
    Opis:
    The paper presents the test procedure for determining dynamic parameters of mechanical structures, by using the method of wavelet analysis of vibration signals as a response of the construction to impulse excitation. Basic mathematical foundations have been shown for a mechanical system with one degree of freedom and its generalization for mechanical systems with many degrees of freedom. The correct functioning of the programme, which is the implementation of procedure for the MATLAB platform, has been tested with the help of programmable simulation of vibration signals and sinusoidal mechanical signals. The author has presented the results of the identification of dynamic parameters of two, selected mechanical structures: a free hanging steel plate and an acoustic screen. The results have been verified by comparing them with those obtained by modal analysis.
    Źródło:
    Measurement Automation Monitoring; 2016, 62, 9; 297-302
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Classification of vehicles in motion based on ground vibration
    Autorzy:
    Bartmański, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/114089.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    vibroacoustics
    digital signal processing
    wavelet analysis
    pattern recognition
    Opis:
    The paper presents a method of measuring the structure of traffic, based on the ground vibration generated by moving vehicles. The measuring system, which uses the presented method, works according to a classical model of pattern recognition process. The method of extracting features based on the wavelet transform was developed. The choice of the classifier’s algorithm was made experimentally. The algorithms were tested using signal recordings performed in typical road conditions.
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 3; 72-75
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The use of the Circular Hough Transform for counting coins
    Autorzy:
    Gomółka, Z.
    Żesławska, E.
    Twaróg, B.
    Paszkiewicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/114081.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    Hough transform
    image detection
    segmentation
    digital image processing
    edge detection
    Opis:
    The paper presents the circular Hough transform in the process of detecting and counting coins. The issues of linear and circular Hough transform are discussed. An algorithm for counting coins in a three-dimensional image using the discrete Hough space is demonstrated. Moreover, the results of the application for detecting and counting coins in a static image and video stream are presented. Observations of histograms for HSV and RGB color palettes, for different camera resolutions and various parameters of image segmentation, edge detection and smoothing filter have been made.
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 9; 434-437
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Parallel data processing in a 3-channel integrated time-interval counter
    Autorzy:
    Jachna, Z.
    Szplet, R.
    Kwiatkowski, P.
    Różyc, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/114531.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    programmable device
    time-to-digital converters
    interpolating time counters
    parallel data processing
    Opis:
    In this paper, we discuss an issue of parallel data processing in multichannel time interval counters (TICs). Particularly we analyze this problem within the framework of a 3-channel TIC developed for the international project Legal Time Distribution System (LTDS). The TIC provides the high measurement precision (< 15 ps) and wide range (> 1s) that are obtained by combining reference clock period counting with in-period interpolation. A measurement process consists of three main stages: (1) events registration, (2) data processing and (3) data transfer. In the event registration stage all input events are identified and registered with related unique timestamps based on a consistent time scale. To achieve high measurement precision, the stream of timestamps is then processed using actual transfer characteristics of the TIC and offset values of all measurement channels. We describe the concept of parallel data processing and its implementation in a Spartan-6 FPGA device (XC6SLX75, Xilinx).
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 7; 308-310
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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