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Journal of Automation Mobile Robotics and Intelligent Systems
EN In thise paper a very simple method of the visual information interpretation for recognition and navigation purposes is presented and discussed. The proposed method consists of six steps: image acquisition, edge detection, fast edge vectorization using a high number of short preliminary vectors, agg[...]
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Pomiary Automatyka Kontrola
2010 R. 56, nr 12 1520-1522
PL Jednym z problemów w cyfrowym przetwarzaniu obrazów jest detekcja krawędzi, która redukuje ilość danych i filtruje część informacji, zachowując ważne własności struktur znajdujących się na obrazie. Do tego celu wykorzystuje się wiele metod. Jedną z nich, bardzo często wykorzystywana jest metoda opar[...]
EN This paper presents differential approximation of the two-dimensional Laplace filter. The proposed algorithm is based on 9- point square lattice. The used transformation Z reduced this problem to 2-D digital filter optimisation. The optimisation is based on the criterion of maximal compatibility of [...]
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Inżynieria i Aparatura Chemiczna
2009 Nr 6 113-114
PL W pracy dokonano porównania czterech wybranych metod gradientowych do określania krawędzi obrazów pęcherzyków gazu uzyskanych na fotografiach. Dla użytych obrazów testowych i rzeczywistych najlepsze rezultaty otrzymano metodami Sobela i Canny'ego. Jednak ostateczny wynik jest zależny od wartości par[...]
EN In this paper a comparison of four gradient methods for gas bubbles edge detection was made. For the test and real images used in investigations the best results were obtained in case of Sobel and Canny methods. However the final result is dependent upon values of method parameters.
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Advances in Manufacturing Science and Technology
PL W pracy przedstawiono metody detekcji krawędzi obiektów na obrazach, mające zastosowanie w systemie inżynierii odwrotnej. Omówiono oryginalną metodę detekcji krawędzi, wykorzystującą kierunkową analizę gradientu luminancji. Metoda ta jest stosowana w systemie inżynierii odwrotnej w medycynie do wyko[...]
EN The paper characterizes the methods of edge detection in the images, which can be used in the reverse engineering system. The method of edge detection by the directional illumination analysis has been shown. Described method is used in the reverse engineering system for preparing the models of the h[...]
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Machine Graphics and Vision
EN Modern geographic information systems (GIS) have a wide range of applications, including town-planning, town traffic control, ecology, logistics and others. These GIS require frequent update's using information supplied by aerospatial cartographic images. The standard approach to processing aerospat[...]
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Image Processing & Communications
EN This paper proposes a new image encryption technique in orthogonal polynomials based transformation domain (OPT) with edge diffusion and selective combinational permutations for secure transmission of images. In this technique, we propose the use of the polynomials based edge detection algorithm to [...]
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Spektrum
2008 nr 3-4 I-V
PL Zaprezentowano wyniki pracy nad sprzętowym wykrywaniem krawędzi w obrazie termowizyjnym zrealizowanym z zastosowaniem układu FPGA. Wykrywanie krawędzi jest jedną z metod cyfrowego przetwarzania obrazu. Przedstawiono wyniki symulacji i testów sprzętowych filtru wykrywającego krawędzie.
EN Presented are results of research work on equipment method of edge detection in thermovision images based upon FPGA system application. Edge detection is one of digital image processing methods. Described are results of simulations and equipment tests of the edge detecting filter.
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Machine Graphics and Vision
EN Edge detection is one of the fundamental operations in computer vision. In the literature there are numerous algorithms for edge detection. This paper presents a new approach to edge detection based on thresholding of a gradient magnitude map. Standard thresholding mathods use a single threshold in [...]
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Machine Graphics and Vision
EN Raster images can have a range of various distortions related to their raster structure. Their upsampling might in effect substantially reveal the raster structure of the original image, known as aliasing. The upsampling itself may introduce aliasing into the upsampled image as well. The presented m[...]
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Machine Graphics and Vision
EN This paper describes the segmentation of nanoparticles of ZnO obtained by mechanical milling. Segmentation of objects in images is a common application of computer vision methods. In contrast to manual segmentation, these techniques are fast, objective, and accurate. We describe in this paper a meth[...]
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Machine Graphics and Vision
EN Conventional edge operators cannot detect fine edges or edges in low-resolution images in a satisfactory way. In this paper, an interpolatory edge operator is proposed to deal with fine edge detection as a supplement. Fast image expansion is implemented by means of B-spline imterpolation. Edges are [...]
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Machine Graphics and Vision
EN Edge detection is a cornerstone in any computer, robotic or machine vision system. Real time edge detection is a pre-process to many critical applications, such as assembly line inspection and surveillance. Wavelets-based algorithms are replacing traditional algorithms, especially the Haar wavelet b[...]
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Measurement Automation Monitoring
2015 Vol. 61, No. 9 434--437
EN 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 a[...]
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Measurement Automation Monitoring
2015 Vol. 61, No. 6 184--186
EN This paper demonstrates the application of different image processing techniques to process high resolution visual images and merge it with low resolution thermograms to improve its level of detail. The same idea is applied in commercially available thermal cameras (e.g. FLIR with MSX® technology). [...]
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Machine Graphics and Vision
EN A method of highly effective biomedical image compression that includes the reconstruction process with a good convergence rate is presented in the paper. It represents an image in the form of its wavelet modulus maxima decomposition. The technique allows the compressed image representation to inclu[...]
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Machine Graphics and Vision
EN The objective of the research documented herein was to investigate high-accuracy identification and measurement of a work-piece through edge detection, and to derive its three-dimensional properties from a profile of the work-piece image. A number of techniques for providing the transformation of th[...]
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Bio-Algorithms and Med-Systems
EN The analysis of the Adaptive Weight Smoothing (AWS) and the Discrete Wavelet Transform (DWT) application in the MRI images improvement is presented. The results show how the AWS and the DWT algorithms can be used for the noise reduction in the MRI. The DWT application gives much better visual result[...]
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Fundamenta Informaticae
EN This paper presents a novel scheme to detect copied versions of digital images, particularly in an Internet environment based on edge information of images. The edge information is used to generate the signature set for a corresponding image. The edge-based signature sets are then used to compute th[...]
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Image Processing & Communications
EN In this study, availability of a multilayer feed forward neural network structure by using back propagation learning algorithm in edge detection problem is studied . Based on the edge detection problem, two types of feed forward neural network tree structures are designed. First structure is used wi[...]
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Inżynieria Rolnicza
2010 R. 14, nr 7 229-236
PL W modelowaniu procesów cieplno-mechanicznych zachodzących w produktach rolniczych konieczna jest znajomość ich geometrii. Opracowano w związku z tym oryginalny system informatyczny do wykrywania krawędzi na cyfrowych obrazach przekrojów dowolnego obiektu oraz do automatycznego tworzenia siatki trójw[...]
EN In modeling thermo-mechanical processes in agricultural products it is important to know their external and internal geometry. An original software was developed for detecting edges in digital images of sections of an arbitrary object and for automatic generating of a mesh of 3D isoparametric finite[...]
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