Automatyka
Loading...
ISSN 1429-3447
e-ISSN: 2353-0952
Issue Date
2008
Volume
T. 12
Number
Nr 3
Description
Journal Volume
Automatyka
T. 12 (2008)
Projects
Pages
Articles
Zastosowanie algorytmu hit-miss do segmentacji barwnych obrazów mikroskopowych w badaniu metodą ELISPOT
(Wydawnictwa AGH, 2008) Bieniecki, Wojciech; Gródecki, Artur; Grabowski, Szymon; Kościelska-Kasprzak, Katarzyna; Drulis-Fajdasz, Dominika; Mazanowska, Oktawia; Klinger, Marian
A color microscope ELISPOT image segmentation approach based on the hit-miss method is presented. The original method is intended for binary images only. The authors propose an extension, which enables monochrome and color image processing. The algorithm has been successfully tested from the viewpoint of accuracy. The drawback of such approach is high computation complexity. The algorithm is part of the computer vision system SpotView, developed for Wroclaw Medical University, where the research on kidney graft rejection risk is conducted.
Zastosowanie algorytmów progowania adaptacyjnego do segmentacji barwnych obrazów mikroskopowych w badaniu metodą ELISPOT
(Wydawnictwa AGH, 2008) Bieniecki, Wojciech; Węgrzyn, Michał; Grabowski, Szymon; Kościelska-Kasprzak, Katarzyna; Drulis-Fajdasz, Dominika; Mazanowska, Oktawia; Klinger, Marian
An approach to segmentation of color microscope images, obtained in ELISPOT examination, which utilizes color components thresholding, is presented. Three methods of adaptive thresholding have been taken into account: Bernsen and two variants of Peaks & Valleys. Primarily, the algorithms were intended for monochrome images and the authors proposed their extension to RGB color space. The properties of the algorithms have been discussed basing on the tests carried out on images provided by the Wroclaw Medical Academy.
Rozszerzenia SIMD w przetwarzaniu obrazów
(Wydawnictwa AGH, 2008) Bubliński, Zbigniew; Jabłoński, Mirosław
The 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.
Implementacja kodeka standardu MPEG-2 w układach FPGA
(Wydawnictwa AGH, 2008) Dąbrowska-Boruch, Agnieszka; Wiatr, Kazimierz
The compression method applied in MPEG-2 standard is a combination of different standards, namely JPEG and H.261. There is possible to use similar compression techniques how in case of the JPEG standard, because the video signal is a sequence of still pictures. Paper presents implementation results of video signal processing path compatible with ISO/IEC 13818 standard specification in XC2VP100(-6)FF1704 Xilinx chip.
Filtry optyczne w systemie wizyjnym do wysokotemperaturowych pomiarów właściwości powierzchniowych metali i ich stopów
(Wydawnictwa AGH, 2008) Fabijańska, Anna; Sankowski, Dominik
This paper considers problem of optical filters selection for vision system for high temperature measurements of metal and alloy surface properties. Especially consequences of incorrect filters selection are discussed. Moreover, analysis of properties of images obtained for different configurations of the vision system is presented. Finally algorithm of optical filters self-acting change is poposed.