Computer Optics
RUS  ENG    JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PACKAGE AMSBIB  
General information
Latest issue
Archive

Search papers
Search references

RSS
Latest issue
Current issues
Archive issues
What is RSS



Computer Optics:
Year:
Volume:
Issue:
Page:
Find






Personal entry:
Login:
Password:
Save password
Enter
Forgotten password?
Register


Computer Optics, 2018, Volume 42, Issue 2, Pages 297–305
DOI: https://doi.org/10.18287/2412-6179-2018-42-2-297-305
(Mi co507)
 

This article is cited in 6 scientific papers (total in 6 papers)

IMAGE PROCESSING, PATTERN RECOGNITION

Constructing a quadratic-exponential FIR-filter with an extended frequency response midrange

V. A. Fursovab

a Samara National Research University, Samara, Russia
b Image Processing Systems Institute of the RAS - Branch of the FSRC "Crystallography and Photonics" RAS, Samara, Russia
References:
Abstract: This article is concerned with synthesizing filter with finite impulse response (FIR-filters) employed to correct radially symmetric distortions such as defocusing. We propose a new parametric class of finite impulse response filters (FIR-filters) based on a model of the one-dimensional radially symmetric frequency response. In the proposed method, the one-dimensional frequency response is composed of quadratic and exponential functions. The two-dimensional impulse response of the filter is constructed by sampling one-dimensional impulse responses for all directions. The development consists in introducing an extended mid-frequency region of the frequency response, thus increasing the contribution of the frequencies to image correction. Examples are given in order to illustrate the possibility of the high-quality distortion correction. In particular, it is shown that the proposed method provides the restoration quality higher than that obtained when using an optimal Wiener filter (taken from OpenCV).
Keywords: FIR-Filter, impulse response, frequency response, image processing.
Funding agency Grant number
Ministry of Education and Science of the Russian Federation 2.7891
Russian Foundation for Basic Research 16-29-09528 офи_м
17-29-03112 офи_м
Russian Academy of Sciences - Federal Agency for Scientific Organizations 007-ГЗ/Ч3363/26
The work was funded by the Russian Federation Ministry of Education and Science (project # 2.7891), the Russian Foundation for Basic Research (RFBR projects ## 16-29-09528 and 17-29-03112) and by the Federal Agency of Scientific Organizations (agreement No. 007-GZ/C3363/26).
Received: 19.02.2018
Accepted: 05.04.2018
Document Type: Article
Language: Russian
Citation: V. A. Fursov, “Constructing a quadratic-exponential FIR-filter with an extended frequency response midrange”, Computer Optics, 42:2 (2018), 297–305
Citation in format AMSBIB
\Bibitem{Fur18}
\by V.~A.~Fursov
\paper Constructing a quadratic-exponential FIR-filter with an extended frequency response midrange
\jour Computer Optics
\yr 2018
\vol 42
\issue 2
\pages 297--305
\mathnet{http://mi.mathnet.ru/co507}
\crossref{https://doi.org/10.18287/2412-6179-2018-42-2-297-305}
Linking options:
  • https://www.mathnet.ru/eng/co507
  • https://www.mathnet.ru/eng/co/v42/i2/p297
  • This publication is cited in the following 6 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
    Computer Optics
    Statistics & downloads:
    Abstract page:168
    Full-text PDF :53
    References:20
     
      Contact us:
     Terms of Use  Registration to the website  Logotypes © Steklov Mathematical Institute RAS, 2024