The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The paper deals with the evaluation of the image noise adding impact to detected corner points positions. These coordinates of corner points were localized using subpixel detection approach. The idea was to systematically add the Gaussian noise into synthetic chessboard image and to observe the relations between the amount of noise and variance of detected positions of points. Also, the influence...
The contribution treats the topic of data transformation for classification of indications in the field of non-destructive defectoscopy by eddy-currents. Four algorithms for transformation of measured signal indications into suitable vectors of features will be presented. The contribution concentrates on the choice of coefficients from single or multiple vectors of features to define new data representation...
The contribution treats the topic of analysis of deformations sources of images of visualized transparent polymeric foils by the schlieren methods and by the methods of image processing. The brightness deformations are rectifiable by means of schlieren apparatus setting and by the methods of image processing. A new method of brightness deformation correction by the linear regression model is presented...
The contribution treats the topic of processing the experimentally gained information on the properties of optically transparent polymeric foils. Schlieren optical system was used to examine and visualize refractive index distribution. Experimental results of statistical and frequency approach to classification of different types of polymeric foils into classes are compared.
Fast localization and classification of defects and structure elements in the defectoscopy of steam generator tubes is the field where application of wavelet transformation is very perspective. Presented paper recapitulates possible applications of wavelet transformation in different subtasks of process analysis of output signal from measurement probe based on eddy-currents.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.