7 research outputs found

    Adaptive method of contrast enhancement for digital images of cytological smears

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    Wst臋p i cel: Zwi臋kszenie kontrastu mi臋dzy j膮drem kom贸rkowym a cytoplazm膮 zapewnia popraw臋 wizualizacji cytologicznych cech kom贸rki. Celem pracy jest poprawa wizualizacji j膮dra kom贸rkowego. Materia艂 i metody: Automatyzacja doboru progu z wykorzystaniem algorytmu adaptacyjnego progowania dla rozk艂ad贸w dwumodalnych zosta艂a przeprowadzona dla obraz贸w rozmaz贸w cytologicznych. Wyniki: Uzyskano zwi臋kszony kontrast dla j膮dra kom贸rkowego, dzi臋ki czemu osi膮gni臋to popraw臋 wizualizacji struktury chromatyny. Wniosek: Adaptacyjna metoda poprawy kontrastu mo偶e by膰 u偶yteczna w diagnostyce cytologicznej, ale potrzebna jest weryfikacja w oparciu o wi臋ksz膮 baz臋 danych obraz贸w cytologicznych.Introduction and aim: Contrast enhancement between nucleus and cytoplasm ensures improvement of cytological features visualisation. The aim of study is improvement of nucleus visualisation. Material and methods: Automation of threshold estimation with the use of adaptive tresholding algorithm for bimodal distributions was provided for images of cytological smears. Results: Improved contrast for cell nuclei was obtained and therefore the enhancement of chromatine structure visualisation is achieved. Conclusion: Adaptive method of contrast enhancement could be useful in cytological diagnosis, but requires verification with the use of large database of cytological images

    Bone structure of the temporo-mandibular joint in the individuals aged 18-25

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    Osteohistometric studies were performed in I5 female and 15 male cadavers aged 18-25. Condyloid process and right and left acetabulum of the temporo-mandibular joint have been studied. Density has been investigated using monitor screen linked with microscope (magnification 80X). Density in the spongy part of the condyloid process was 26.67-26.77%; in the subchondrial layer- 72.13-72.72%, and in the acetabular wall 75.03-75.91%. Microscopic structure of the bones of the temporo-mandibular joint revealed no differences when compared with images of compact and cancellous bone shown in the histology textbooks. Sex and the side of the body had no influence on microscopic image and proportional bone density! Isles of chondrocytes in the trabeculae of the spongy structure of the condyloid process were found in 4 cases and isles of the condensed bone resembling the compact pattern in 7 cases
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