Edge Enhancement by Processing in Frequency Space

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  • XIAO Hongju
    Department of Systems Engineering, Nippon Institute of Technology
  • CHEN Hongmei
    Department of Systems Engineering, Nippon Institute of Technology
  • HOSHINO Yasushi
    Department of Systems Engineering, Nippon Institute of Technology

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Other Title
  • 周波数領域での強調による輪郭強調処理の検討
  • シュウハスウ リョウイキ デ ノ キョウチョウ ニ ヨル リンカク キョウチョウ ショリ ノ ケントウ

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Description

The requirement of high quality image is increasing as the wide use of digital image. Edge enhancement is a important way to improve the quality of a image. As a important solution of edge enhancement, there is possibility of processing in frequence space. In this article, we try to use FFT(Fast Fourier transform) to convert a image into frequency space and used three types of filters to enhance the edge of the image. From the result we analyze the feature of three filters and comprehend the edge enhancement in frequency space.

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