Out-of-focus blur image restoration using the Akamatsu transform

Stephen Karungaru, Masakazu Sugizaki, Minoru Fukumi, Yasue Mitsukura, Norio Akamatsu

Research output: Contribution to conferencePaperpeer-review

3 Citations (Scopus)


In this paper, a new image restoration approach using the Akamatsu transform is presented. In the method, by using repeated simple calculations based on the Akamatsu transform, an out-of-focus blurred image can be restored and sharpened. Out of focus is a major problem bothering many people in photography, especially the amateurs. There exits some solution to this problem on both the hardware and software sides. However, none offers a perfect solution. The Akamatsu transform can easily be embedded into hardware to offer faster processing due to its simplicity. Although, initially proposed for speech processing, this paper show the effectiveness of the transform in image processing. The Akamatsu transform is a combination of integral and differential transforms. The algorithm can be effective tools for image restoration in realtime image processing.

Original languageEnglish
Number of pages5
Publication statusPublished - 2009 Dec 1
Externally publishedYes
Event35th Annual Conference of the IEEE Industrial Electronics Society, IECON 2009 - Porto, Portugal
Duration: 2009 Nov 32009 Nov 5


Other35th Annual Conference of the IEEE Industrial Electronics Society, IECON 2009

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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