Користувач:Andriy Hryvachevskyi

My name is Andrii Hryvachevskyi. I am a postgraduate student of the third year at the Department of Radioelectronic Devices and Systems [1]. My scientific adviser is the Honoured Worker of Ukraine Education, Doctor of Technical Sciences, Professor Ivan Prudyus [2].

In postgraduate studies I am engaged in digital image processing for remote sensing. The theme of my thesis is "Increasing the informativeness of multispectral monitoring systems by image fusion of the visible and infrared ranges".

The essence of my work is as follows. The development of modern optical-electronic systems for monitoring objects and scenes goes in the direction of expanding the number of spectral ranges in order to obtain reliable information about the parameters and characteristics of objects under difficult observation conditions. Most often in such systems the infrared and visible ranges of the spectrum of electromagnetic waves are used. The image of the visible range gives detailed information about the texture of objects with high spatial resolution and presents information in a way customary for the human visual system. However, their effectiveness falls sharply with the deterioration of observation conditions. In contrast, infrared images make it possible to distinguish targets from their background due to the difference in thermal radiation, despite the difficult weather conditions and the absence of outdoor lighting, but have the resolution several times lower. Therefore, it is desirable to combine these two types of images that can combine the advantages of thermal radiation in infrared images and detailed textural information on visible images.

In the thesis I developed a method for image fusion obtained in the visible and infrared ranges of the spectrum, which makes it possible to increase the informativeness of the fused image. The proposed method is based on the discrete wavelet transform used to decomposition the input images and regression analysis for their fusion. As a result of the fusion, a more informative image is synthesized which makes it possible to detect objects at a distance with greater probability.

Based on the results of my research, I published 6 articles and 17 conference proceedings.

Last year I had an internship at the company Hertz Systems, located in Zielona Gora, Poland. In the company I worked as an engineer and dealt with navigation systems: GPS (Global Position Systems) and INS (Inertial Navigation Systems). Upon completion of the internship, I returned to Ukraine to finalize my dissertation, defend it and get a Ph.D. in engineering.