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In order to obtain fine contacts over the crystal unit, it is necessary to apply a thin layer of metal electrodes on its surface. The structure of the thin metal film formed by evaporation and condensation under the vacuum depends on many parameters and therefore it is very important to define the terms of steaming. This paper describes a method for achieving a good structure of thin metal films in...
Low-pass image filtering, especially averaging, causes edge blurring. To prevent this effect we propose in this paper controlled low-pass filtering. Local dimension is used as a control parameter, favoring only non-edge-like regions for filtering. Multifractal capacities used in that aim are maximum and minimum multifractal capacities, since of their sensitivity on edges. Obtained results are evaluated...
High quality crystal filter which operates at 50 MHz has been realized. The filter with bandwidth of 15 kHz, and special requirements regarding the electrical and environmental characteristics, is designed by using the transformation techniques applied on the cascade of lattice sections. Filter realization was performed at the Institute Mihailo Pupin, Belgrade, in cooperation with the Faculty of Electrical...
Assisting physicians in the auscultation of the patients by providing cost effective, automatic and accurate signal processing module for the heart event detection and recognition is of importance. We suggest that the segmentation of time-frequency representation image of one-dimensional phonocardiogram signals (PCGs) could be effective for observing possible abnormal heart events. The fact that frequency...
Hundreds of algorithms for different aspects of image segmentation have been developed. In this paper goals of using segmentation in video and multimedia systems are considered. Thus direction of improvements is towards forming masks and matte signals. The idea is to spread locally dominant segment in already segmented image. This problem is set as optimization problem and solution can be achieved...
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