• Title/Summary/Keyword: Polygon Shaped Filter

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Polygon-shaped Filters in Frequency Domain for Practical Filtering of Images (현실적 영상 필터링 방법을 위한 주파수 영역에서의 다각형 형태 필터의 모델링)

  • Kim, Ju-O;Kim, Ji-Su;Park, Cheol-Hyeong;Lee, Deok-Woo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.3
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    • pp.1-7
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    • 2019
  • In this paper, we propose an approach to design a practical filter and a mathematical modeling for images. In the areas of signal processing, including high-dimensional image processing, the filtering process has been fundamental and crucial in diverse practical applications such as image processing, computer vision, and pattern recognition. In general, the ideal filter is modeled as circular-shaped in the 2D frequency domain as the rectangular shape is ideal for the 1D frequency domain. This paper proposes an approach to modeling practical and efficient image filter in the 2D frequency domain. Instead of employing a circular-shaped filter, this study proposes a polygon-shaped filter inspired by the concept of a hexagon cellular system for frequency reuse in wireless communication systems. By employing the concept of frequency reuse, bandwidth efficiency is also achieved in the frequency domain. To substantiate the proposed approach, quantitative evaluation is performed using PSNR.