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Wyszukujesz frazę "image quantitative analysis" wg kryterium: Temat

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    Wyświetlanie 1-11 z 11
    Tytuł:
    Optimal Selection of Image Segmentation Algorithm for Heat-Emitting Objects
    Autorzy:
    Fabijanska, A
    Sankowski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/108774.pdf
    Data publikacji:
    2009
    Wydawca:
    Społeczna Akademia Nauk w Łodzi
    Tematy:
    image processing
    image segmentation
    image quantitative analysis
    heat-emitting objects
    Opis:
    In this paper problem of image segmentation quality is delibered. Especially, issue of segmentation method selection for images presenting heat-emitting objects is discussed. Particular attention is paid to thresholding method and edge-based image segmentation. Results of applying these methods to exemplary images are presented and discussed.
    Źródło:
    Journal of Applied Computer Science Methods; 2009, 1 No. 2; 43-51
    1689-9636
    Pojawia się w:
    Journal of Applied Computer Science Methods
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Filters’ Influence on Digital Image Quality in High Temperature Measurements of Surface Properties
    Autorzy:
    Fabijanska, A
    Sankowski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/108736.pdf
    Data publikacji:
    2009
    Wydawca:
    Społeczna Akademia Nauk w Łodzi
    Tematy:
    digital image processing
    image quality
    optical filters
    image quantitative analysis
    image noise
    Opis:
    This paper is concerned with high temperature image quantitative analysis systems. Particular attention is paid to computerised system for surface properties (wetting angle and surface tension) determination. A brief description of the system is given. The specificity of the performed measurements based on images presenting heat-emitting objects is considered. Moreover, the significance of optical filters’ usage is explained. Infrared and neutral density filters are regarded. Influence of these filters on digital image quality is deliberated. Especially image noise presence is considered. The detailed analysis of noise properties change due filters usage is carried out. Finally, results of the analysis are presented and discussed.
    Źródło:
    Journal of Applied Computer Science Methods; 2009, 1 No. 2; 53-63
    1689-9636
    Pojawia się w:
    Journal of Applied Computer Science Methods
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructural changes of expansive clays during dehydration caused by suction pressure - a case study of Miocene to Pliocene clays from Warsaw (Poland)
    Autorzy:
    Wójcik, Emilia
    Trzciński, Jerzy
    Łądkiewicz-Krochmal, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/139432.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    clay pastes
    quantitative image analysis
    pore space
    soil-water curve
    pasty gliniane
    analiza ilościowa obrazów
    rozkład porów
    gleba
    woda
    Opis:
    This paper presents the qualitative and quantitative characteristics of microstructures of Neogene clays from Warsaw, Poland. Scanning Electron Microscope (SEM) studies were used for the microstructural analysis of natural clays and clay pastes. Qualitative microstructural changes were observed: from a honeycomb microstructure for the initial clay paste to a turbulent microstructure for the dried paste. It was also noticed that water loss caused by the increase of the suction pressure had a significant impact on the microstructural transformations. Significant changes in the quantitative values of the pore space parameters were also observed. Increase of suction pressure and water loss caused a decrease in porosity and changes in the values of morphometric parameters, such as pore distribution; for example, a significant increase of the number of pores of 0−10 μm size and changes in the geometric parameters of the pore space were noticed with the increase of suction pressure. The pore space with larger isometric pores was modified into a pore space with the dominance of small anisometric and fissure-like pores. The increased degree of anisotropy from a poorly-oriented to a highly-oriented microstructure was also observed. After rapid shrinkage the reduction in the number of pores, maximum pore diameter, and total pore perimeter was recorded. The process of rapid water loss induced the closure of very small pores. A similar effect was observed during the increase of the suction pressure, where the closure of pore space of the clay pastes was observed very clearly.
    Źródło:
    Acta Geologica Polonica; 2019, 69, 3; 465-488
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Image based analysis of complex microstructures of engineering materials
    Autorzy:
    Wejrzanowski, T.
    Spychalski, W. L.
    Różniatowski, K.
    Kurzydłowski, K. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/908046.pdf
    Data publikacji:
    2008
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    analiza obrazu
    opis ilościowy
    mikrostruktura
    image analysis
    quantitative description
    microstructure
    Opis:
    The paper presents various methods for quantitative description of material structures. The main focus is on direct methods of description based on image analysis. In particular, techniques for the estimation of the size, shape and spatial distribution of structural elements observed by different microscopic techniques are described. The application of these methods for the characterization of the structures of engineering materials is demonstrated on a stainless steel used in petrochemical installations. It is shown that the methods applied are useful for the assessment of service degradation of materials.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2008, 18, 1; 33-39
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quantitative method for determining cell structural parameters of plant tissues
    Autorzy:
    Konstankiewicz, K.
    Pawlak, K.
    Zdunek, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/24956.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    quantitative method
    plant tissue
    cell structure
    potato
    parenchyma
    tuber
    image analysis
    Źródło:
    International Agrophysics; 2001, 15, 3
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of database technology to analysis of rock structure images
    Autorzy:
    Mlynarczuk, M.
    Ladniak, M.
    Piorkowski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/110666.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    image processing
    mathematical morphology
    quantitative analysis of rocks
    databases
    user defined function
    Opis:
    The aim of this paper is to present a possibility to use information technology in the form of databases for processing and analyzing large image sets based on methods of image analysis and mathematical morphology. Up to now the use of databases in the image analysis process has been reduced to storing large amounts of data in the form of images. However, all transformations and analyses of such sets are made on user’s computers. This requires a large data set (images) to be sent by network each time, and also it may possess the problems resulting from managing such large amounts of analyzed photographs on a computer. The proposed approach completely eliminates these problems by moving all transformations of image analysis to a database platform. For this purpose a set of routines realizing transformations of the image analysis and mathematical morphology was developed. The proposed approach allows the unification of the image processing and analysis area and advanced statistical analyses of obtained parameters describing geometrical sizes of objects on photographs. The proposed methodology was illustrated by practical realization of two measurement types for a simple structure of copper concentrate and more complicated, from the point of view of image analysis, structures such as dolomites from Redziny and Laskowa Gora and sandstones from Tumlin and Wisniowka.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2014, 50, 2; 563-573
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quantitative X-Ray Diffraction Analysis of Zn-Al Based Alloys
    Autorzy:
    Gogola, P.
    Gabalcová, Z.
    Suchánek, H.
    Babinec, M.
    Bonek, M.
    Kusý, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/353557.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hot-dip coating
    quantitative x-ray diffraction
    image analysis
    Zn-Al alloy
    Opis:
    The paper describes modification to Fm3 ̅m (space group no. 225) lattice of aluminium based α-solid solution observed in Zn-Al alloys required to properly correlate quantitative data from X-ray diffraction analysis with results obtained from quantitative scanning electron microscopy image analysis and those predicted from Zn-Al binary phase diagram. Results suggests that 14 at.% of Zn as a solute atom should be introduced in crystal lattice of aluminium to obtain correct estimation of phase quantities determined by quantitative X-ray diffraction analysis. It was shown that this modification holds for Cu mould cast as well as annealed and water-cooled samples of Zn-3wt.%. Al and Zn-5wt.% Al.
    Źródło:
    Archives of Metallurgy and Materials; 2020, 65, 2; 959-966
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of image analysis for evaluation of mercury intrusion porosimetry results
    Autorzy:
    Kozak, E.
    Pezda, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/26305.pdf
    Data publikacji:
    1995
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    quantitative method
    convenient method
    pore size
    soil aggregate
    mercury intrusion
    distribution
    image analysis
    Źródło:
    International Agrophysics; 1995, 09, 4
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie stereologii w inżynierii materiałów budowlanych
    Application of stereology in engineering of building materials
    Autorzy:
    Szeląg, M.
    Szewczak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/390639.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
    Tematy:
    analiza obrazu
    stereologia
    ilościowe parametry struktury
    materiały budowlane
    image analysis
    stereology
    quantitative structure parameters
    building materials
    Opis:
    Artykuł przedstawia dane literaturowe dotyczące zastosowania stereologii oraz analizy obrazu do ilościowej oceny struktury materiałów budowlanych. Na wstępie opisano rozwój metod stereologicznych i technik komputerowej analizy obrazu w badaniach materiałów budowlanych. Następnie zdefiniowano ilościowe parametry struktury oraz przedstawiono sposób ich określania. W artykule zrelacjonowano dotychczasowe zastosowanie analizy obrazu do określania właściwości kompozytów cementowych, w tym: ocena porowatości stwardniałego betonu, określenie rozkładu kruszywa w matrycy cementowej, analiza spękań. Stwierdzono, że wiodącym problemem analizy obrazu jest proces przygotowania próbki w celu prawidłowej ekstrakcji badanej fazy oraz metodologia automatyzacji pomiarów.
    The article presents the literature review about the application of stereology and image analysis for quantitative evaluation of the building materials structure. At the outset, the development of stereological methods and computer image analysis techniques in the study of building materials was provided. Then quantitative structure parameters were defined and their methods of determining were showed. In the paper, the application of image analysis for the determination of properties of the cement composites was reported, including: an assessment of the porosity of the hardened concrete, determination of the aggregate distribution in the cementitious matrix, the crack analysis. It was found that the leading problem of image analysis is the process of sample preparation in order to obtain the correct extraction of examinated phase, and measurement automation process.
    Źródło:
    Budownictwo i Architektura; 2015, 14, 1; 115-125
    1899-0665
    Pojawia się w:
    Budownictwo i Architektura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructural features evaluation of age-hardened A 226 cast alloy by image analysis
    Autorzy:
    Kucharikova, L.
    Tillova, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/111749.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    age-hardening
    aluminum cast alloys
    image analysis
    quantitative analysis
    microstructural features
    utwardzanie przez starzenie
    stopy aluminium
    analiza obrazu
    analiza ilościowa
    Opis:
    Age-hardening provides one of the most widely used mechanisms for the strengthening of aluminum alloys. The age-hardening involves three steps: solution treatment, quenching and aging. The temperature of solution treatment and aging is very important in order to reach desired properties of castings. The optimum temperature of solution treatment and aging led to formation microstructural features in form which does not lead to decreasing properties, but increasing ones. The major micro-structural features in A 226 cast alloys which are responsible for increasing properties are: eutectic Si particles, Cu-rich phases, Fe-rich phases and porosity. The increase of properties depends on morphology, size and volume of microstructural features. In order to assess age-hardening influence on microstructural features in A226 cast alloys were used as possibilities of evaluation by means of image analysis. Quantitative analysis decelerate changes in microstructure includes the spheroidization and coarsening of eutectic silicon, gradual disintegration, shortening and thinning of Fe-rich intermetallic phases, the dissolution of precipitates and the precipitation of finer hardening phase (Al2Cu) further increase in the hardness and tensile strength in the alloy. Changes of mechanical properties were measured in line with STN EN ISO.
    Źródło:
    Production Engineering Archives; 2017, 17; 3-8
    2353-5156
    2353-7779
    Pojawia się w:
    Production Engineering Archives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The assessment of castings quality using selected quantitative methods
    Autorzy:
    Kucharikova, L.
    Tillova, E.
    Zavodska, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/111949.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    aluminium castings
    image analyser software
    quantitative analysis
    structural parameters of aluminium cast alloys
    odlew aluminiowy
    oprogramowanie analizatora obrazu
    analiza ilościowa
    parametry strukturalne
    odlewane stopy aluminium
    Opis:
    Aluminium alloys represent an important category of materials due to their high technological value and wide range of applications. The alloys of the Al-Si-Cu system have become increasingly important in recent years, mainly in automotive industry that uses secondary aluminium (recycled) in the form of various motor mounts, pistons, cylinder heads, heat exchangers, air conditioners due to their high strength at room and high temperature. This work deals with possibilities of quick and correct assessment of aluminium castings microstructure, especially focused on volume, size and shape of structural parameters – eutectic Si and intermetallic phases different chemical compositions. These structural parameters affect the properties of castings and it is important to study their features. The features were studied by using image analyser software NIS Elements.
    Źródło:
    Production Engineering Archives; 2016, 13, 4; 7-10
    2353-5156
    2353-7779
    Pojawia się w:
    Production Engineering Archives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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