Directional Image Filtering Based on the Fourier Transform

• Autorzy: Korohoda, P. , Grabska-Chrząstowska, J. , Przybyło, J.
• Języki publikacji: EN

Abstrakty

EN

An algorithm to design the small size 2-D filter masks with arbitrarily selected rotation angle has been proposed. The classical filter mask of size 3 × 3 is obtained from the reference Fourier space characteristics, rotated in the Fourier domain. The efficiency of the suggested method was illustrated with examples based on the Sobel gradient mask and two test images. Comparative computations indicated that the accuracy of the filtering result with use of the small size filters is noticeably better when the filter has been designed with use of the Fourier characteristics rotation than after direct rotation of the mask in the pixel domain.

Słowa kluczowe

EN

digital image processing; filtering; discrete Fourier transform

• Czasopismo: Image Processing & Communications
• Rocznik: 2014
• Tom: Vol. 19, no. 2-3
• Strony: 7--13
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Korohoda, P.

• AGH University of Science and Technology, Faculty of Computing Science, Electronics and Telecommunications, Department of Electronics, Al. Mickiewicza 30, 30-059 Krakow, Polan,

autor

Grabska-Chrząstowska, J.

• [e-mail]
• AGH University of Science and Technology, Faculty of Electrical Engineering, Automatics, Computer Science and Biomedical Engineering, Department of Automatics and Bioengineering, Al. Mickiewicza 30, 30-059 Krakow, Poland

autor

Przybyło, J.

• [e-mail]
• AGH University of Science and Technology, Faculty of Electrical Engineering, Automatics, Computer Science and Biomedical Engineering, Department of Automatics and Bioengineering, Al. Mickiewicza 30, 30-059 Krakow, Poland

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