Loading...
Search for: morphological-operator
0.006 seconds

    Image Processing in Paintings Using Multispectral Imaging

    , M.Sc. Thesis Sharif University of Technology Kamani, Mohammad Mahdi (Author) ; Marvasti, Farrokh (Supervisor) ; Amini, Arash (Co-Advisor)
    Abstract
    Considering the tremendous development in imaging systems’ industry, today we can afford to have imaging equipment, capable of taking multispectral images in very high resolution. One of the remarkable benefits of this technology is in the realm of arts and particularly in museums. Taking advantage of the potentials of multispectral, highquality imaging, curators will be able to probe their priceless works of art ( e.g. paintings ) without putting them in danger through invasive research. Besides, one can investigate and control the transformation of these works through time by using this new imaging method. Recently, Multispectral Imaging of paintings, in different frequency bands from... 

    Influence of Heat Treatment on Size and Morphology of Various γ′ Phase in IN738LC and GTD-111 Superalloys

    , M.Sc. Thesis Sharif University of Technology Mardiha, Pourya (Author) ; Asgari, Sirous (Supervisor)
    Abstract
    Gamma prime (γ') precipitates are the most important phase in nickel-base superalloys that rise to a combination of desirable properties in superalloys. The morphology of these particles has important contribution to the resulting properties of superalloys. Heat treatment process of superalloys is one of the most important factors affecting the characteristics of the γ' phase. In this study, nickel-base superalloys IN738LC and GTD-111 were used to study the evolution of the microstructure and morphology of the γ' precipitates under a variety of heat treatment cycles including partial dissolution, aging for different times and under a range of cooling rates. Morphology and characteristics of... 

    Automatic identification of overlapping/touching chromosomes in microscopic images using morphological operators

    , Article 2011 7th Iranian Conference on Machine Vision and Image Processing, MVIP 2011 - Proceedings, 16 November 2011 through 17 November 2011 ; November , 2011 , Page(s): 1 - 4 ; 9781457715358 (ISBN) Jahani, S ; Setarehdan, S. K ; Fatemizadeh, E ; Sharif University of Technology
    2011
    Abstract
    Karyotyping, is the process of classification of human chromosomes within the microscopic images. This is a common task for diagnosing many genetic disorders and abnormalities. Automatic Karyotyping algorithms usually suffer the poor quality of the images due to the non rigid nature of the chromosomes which makes them to have unpredictable shapes and sizes in various images. One of the main problems that usually need operator's interaction is the identification and separation of the overlapping/touching chromosomes. This paper presents an effective algorithm for identification of any cluster of the overlapping/touching chromosomes together with the number of chromosomes in the cluster, which... 

    An FPCA-based color morphological filter for noise removal

    , Article Scientia Iranica ; Volume 16, Issue 1 D , 2009 , Pages 8-18 ; 10263098 (ISSN) Soleymani Baghshah, M ; Kasaei, S ; Sharif University of Technology
    2009
    Abstract
    Morphological filtering is a useful technique for the processing and analysis of binary and gray scale images. The extension of morphological techniques to color images is not a straightforward task because this extension stems from the multivariate ordering problem. Since multivariate ordering is ambiguous, existing approaches have used known vector ordering schemes for the color ordering purpose. In the. last decade, many different color morphological operators have been introduced in the literature. Some of them have focused on noise suppression purposes. However, none has shown good performance, especially on edgy regions. In this paper, new color morphological operators, based on a...