Temat: shape analysis - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: An automatic footshape plantograms analysis based on a new shape-measure
Autorzy:: Kocjan, K.
Kotarski, W.
Powiązania:: https://bibliotekanauki.pl/articles/333053.pdf
Data publikacji:: 2004
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: analiza kształtu
płaskostopie
shape analysis
flat foot
Opis:: In this note we present a method for recognition of flatfoot abnormality with the help of some new shape-measure describing numerically this abnormality efficient enough. The proposed measure can be easily implemented and used for automatic flatfoot level diagnosis. Experiments carried out on a number of the plantograms, analysed using the computer programme prepared by first of the authors, proved the usefulness of this new approach.
Źródło:: Journal of Medical Informatics & Technologies; 2004, 8; II15-20
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Blood cells analysis based on simple geometrical shape descriptors
Autorzy:: Kocjan, K.
Kotarski, W.
Widuch, S.
Powiązania:: https://bibliotekanauki.pl/articles/332950.pdf
Data publikacji:: 2002
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: analiza kształtu
komórki krwi
shape analysis
blood cells
Opis:: In the paper we present some results concerning application of simple shape parameters that are successfully used to distinguish between normal and pathological blood cells. All descriptors are based on shape area and its perimeter. We use five parameters that are automatically calculated for objects pointed out in the analyzed image with the help of our software. The experiments performed on the same set of tested images as in [3] let us draw the same conclusions as those reported in [3] where fractal analysis to shape has been used.
Źródło:: Journal of Medical Informatics & Technologies; 2002, 3; MI207-212
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Closest paths in graph drawings under an elastic metric
Autorzy:: Baran, M.
Powiązania:: https://bibliotekanauki.pl/articles/330666.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: elastic shape analysis
pattern recognition
superpixel segmentation
analiza kształtu
rozpoznawanie wzorca
segmentacja obrazu
superpiksel
Opis:: This work extends the dynamic programming approach to calculation of an elastic metric between two curves to finding paths in pairs of graph drawings that are closest under this metric. The new algorithm effectively solves this problem when all paths between two given nodes in one of these graphs have the same length. It is then applied to the problem of pattern recognition constrained by a superpixel segmentation. Segmentations of test images, obtained without statistical modeling given two shape endpoints, have good accuracy.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2018, 28, 2; 387-397
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Area collapse algorithm computing new curve of 2D geometric objects
Autorzy:: Buczek, M. M.
Powiązania:: https://bibliotekanauki.pl/articles/145607.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: shape analysis
Polygon collapse
medial axis
geometry processing
spatial database
analiza kształtu
geometria
przestrzenna baza danych
Opis:: The processing of cartographic data demands human involvement. Up-to-date algorithms try to automate a part of this process. The goal is to obtain a digital model, or additional information about shape and topology of input geometric objects. A topological skeleton is one of the most important tools in the branch of science called shape analysis. It represents topological and geometrical characteristics of input data. Its plot depends on using algorithms such as medial axis, skeletonization, erosion, thinning, area collapse and many others. Area collapse, also known as dimension change, replaces input data with lower-dimensional geometric objects like, for example, a polygon with a polygonal chain, a line segment with a point. The goal of this paper is to introduce a new algorithm for the automatic calculation of polygonal chains representing a 2D polygon. The output is entirely contained within the area of the input polygon, and it has a linear plot without branches. The computational process is automatic and repeatable. The requirements of input data are discussed. The author analyzes results based on the method of computing ends of output polygonal chains. Additional methods to improve results are explored. The algorithm was tested on real-world cartographic data received from BDOT/GESUT databases, and on point clouds from laser scanning. An implementation for computing hatching of embankment is described.
Źródło:: Geodesy and Cartography; 2017, 66, 1; 23-44
2080-6736
2300-2581
Pojawia się w:: Geodesy and Cartography
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: 3D modelling and segmentation with discrete curvatures
Autorzy:: Bac, A.
Daniel, M.
Maltret, J. - L.
Powiązania:: https://bibliotekanauki.pl/articles/333880.pdf
Data publikacji:: 2005
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: powierzchnie wielościenne
krzywe dyskretne
analiza kształtu
modelowanie 3D
segmentacja
polyhedral surfaces
discrete curvatures
shape analysis
3D modelling
segmentation
Opis:: Recent concepts of discrete curvatures are very important for Medical and Computer Aided Geometric Design applications. A first reason is the opportunity to handle a discretisation of a continuous object, with a free choice of the discretisation. A second and most important reason is the possibility to define second-order estimators for discrete objects in order to estimate local shapes and manipulate discrete objects. There is an increasing need to handle polyhedral objects and clouds of points for which only a discrete approach makes sense. These sets of points, once structured (in general meshed with simplexes for surfaces or volumes), can be analysed using these second-order estimators. After a general presentation of the problem, a first approach based on angular defect, is studied. Then, a local approximation approach (mostly by quadrics) is presented. Different possible applications of these techniques are suggested, including the analysis of 2D or 3D images, decimation, segmentation... We finally emphasise different artefacts encountered in the discrete case.
Źródło:: Journal of Medical Informatics & Technologies; 2005, 9; 13-24
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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