Bubliński, Zbigniew
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automatyka, elektronika, elektrotechnika i technologie kosmiczne
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Item type:Article, Access status: Open Access , Rozszerzenia SIMD w przetwarzaniu obrazów(Wydawnictwa AGH, 2008) Bubliński, Zbigniew; Jabłoński, MirosławThe paper presents an attempt to utilize the SIMD extensions, available in modern processor architectures, in order to minimize image processing time. In particular, the effect of MMX and SSE instructions on the digital image brightness (intensity) modification algorithm was investigated in detail. All experiments were performed in 'VirtualDub' environment. The results, i.e. processing times, were compared with those obtained from an algorithm written in plain C language.Item type:Article, Access status: Open Access , Efektywność wybranych metod etykietowania obiektów(Wydawnictwo AGH, 2006) Bubliński, Zbigniew; Mikrut, ZbigniewThis paper describes the comparison of two object labelling methods: linear component labelling and labelling based on recurrency (»floodfill algorithm«). Real-life and artificially generated sequences of frames stored as AVI files were used as source of test input images. Labelling algorithms were implemented as a video filter (with method select switch) running in VirtualDub environment. The detailed comparison of results obtained during analysis of selected video sequences is presented.Item type:Article, Access status: Open Access , Szybka detekcja rozgałęzień w drzewie oskrzelowym(Wydawnictwa AGH, 2010) Pawlik, Piotr; Bubliński, ZbigniewThe paper presents an algorithm for fast detection of bronchial tree subdivisions on images obtained during bronchoscopy examination. Localization of these subdivisions could be very helpful to physicians while reviewing collected data. The time of the detection should be as short as possible, especially when large sets of data were gathered during examination. The presented algorithm works in real time and is characterized by a very high level of specificity.Item type:Article, Access status: Open Access , Analiza sekwencji filmowych w środowisku VirtualDub w oparciu o platformę FPGA(Wydawnictwa AGH, 2006) Bubliński, Zbigniew; Jabłoński, Mirosław; Mikrut, ZbigniewThis paper describes the method of linear components labelling. Real and artificially generated sequences of frames were used as source of input images, and labelling was conducted in Virtual-Dub environment as processing of movie with VirtualDub filters. One filter is a pure software implementation of labelling algorithm, and the other is hardware implementation based on FPGA circuit. The detailed comparison of results obtained during analysis of selected video sequences is presented.Item type:Article, Access status: Open Access , Integracja toru wizyjnego na platformie rekonfigurowalnej(Wydawnictwa AGH, 2008) Jabłoński, Mirosław; Bubliński, ZbigniewThe research includes the review and classification of computing platforms types suitable for streambased operation and embedded vision system. Experimental, integrated vision pipeline includes advanced image sensor and reprogrammable circuit. Criteria for evaluation of stream based video processing system have been defined and applied to edge detector application.Item type:Article, Access status: Open Access , Wykorzystanie instrukcji SSE w przetwarzaniu obrazów(Wydawnictwa AGH, 2009) Bubliński, ZbigniewThe paper presents an attempt to utilize the SIMD extensions, available in modern processor architectures, in order to minimize image processing time. In particular, the effect of MMX and SSE instructions on the digital image thresholding algorithm was investigated in detail. The results, i.e. processing times, were compared with those obtained from an algorithm written in plain C and in x86 assembly language.Item type:Article, Access status: Open Access , Śledzenie obszarów zainteresowania w sekwencjach obrazów bronchoskopowych za pomocą metody SIFT(Wydawnictwa AGH, 2009) Pawlik, Piotr; Bubliński, Zbigniew; Duplaga, MariuszThe paper presents an attempt to utilize the modified SIFT method for ROI (region of interest) tracking on sequences of bronchoscopy images. The method was tested on several movies recorded during medical treatment and very promising results were obtained. Also, the areas of possible improvements were pointed out.Item type:Article, Access status: Open Access , Akceleracja algorytmów przetwarzania obrazów z wykorzystaniem zasobów karty graficznej(Wydawnictwa AGH, 2009) Jabłoński, Mirosław; Bubliński, ZbigniewThe paper presents an attempt to utilize the graphics card resources for acceleration of selected image processing operations. The use of tools obtained from NVIDIA for GeForce graphics cards series makes it possible to distribute a computational task on threads executed by GPU floating-point cores. Execution times of parallelized operations were measured and compared with execution time of single-threaded program ran on CPU. Also, the speed-up factors (acceleration factors) were calculated.Item type:Article, Access status: Open Access , Automatyczne wyznaczanie stref kolizji pojazdów(Wydawnictwa AGH, 2005) Bubliński, Zbigniew; Mikrut, Zbigniew; Pawlik, PiotrThis paper describes the method of automatic detection of vehicles' collision zones based on analysis of video sequences registered by digital camera at signalised traffic intersection. Moving vehicles, visible on particular frames, are detected and their trajectories are stored. Tracks of vehicles which are moving in the same direction create some kind of »corridors« and overlaps of those »corridors« (common areas) are quite precise localisation of collision zones. The detailed description of algorithm and results obtained during analysis of selected video sequences is presented.Item type:Article, Access status: Open Access , Rozpoznawanie twarzy za pomocą deskryptorów punktów charakterystycznych(Wydawnictwa AGH, 2011) Pawlik, Piotr; Bubliński, ZbigniewArtykuł przedstawia zastosowanie deskryptorów punktów charakterystycznych do rozpoznawania twarzy. W wyborze punktów charakterystycznych kierowano się doniesieniami z badań psychologicznych, wskazujących że do rozpoznania twarzy wystarczają człowiekowi dwa ruchy fiksacyjne koncentrujące się w okolicach nosa i oczu. Zaprezentowane wyniki - uzyskane dla obrazów z bazy BioID - potwierdziły, że stosując deskryptory punktów charakterystycznych, można rozpoznać twarz, korzystając z jedynie trzech takich punktów.