3 Citations (Scopus)

Abstract

In this paper we present approximate adders and multipliers to reduce the datapath complexity of image processing systems with only a small degradation in PSNR performance. We build upon the approximate circuits proposed in [8] and [9]. We show that selective application of accurate and approximate adders can significantly improve the accuracy of a 2D DCT system. For instance, our implementation of 2D DCT has comparable PSNR performance compared to [8] with 34-50% reduction in area. We also propose an approximate multiplier where the partial products have varying degrees of approximation. Such a multiplier helps improve the accuracy of the system as demonstrated through FFT and Gaussian filter case studies.

Original languageEnglish (US)
Title of host publicationProceedings - IEEE International Symposium on Circuits and Systems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1544-1547
Number of pages4
ISBN (Print)9781479934324
DOIs
StatePublished - 2014
Event2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014 - Melbourne, VIC, Australia
Duration: Jun 1 2014Jun 5 2014

Other

Other2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
CountryAustralia
CityMelbourne, VIC
Period6/1/146/5/14

Fingerprint

Adders
Image processing
Fast Fourier transforms
Degradation
Networks (circuits)

Keywords

  • Approximate adders
  • approximate multipliers
  • image processing

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Vasudevan, M., & Chakrabarti, C. (2014). Image processing using approximate datapath units. In Proceedings - IEEE International Symposium on Circuits and Systems (pp. 1544-1547). [6865442] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISCAS.2014.6865442

Image processing using approximate datapath units. / Vasudevan, Madhu; Chakrabarti, Chaitali.

Proceedings - IEEE International Symposium on Circuits and Systems. Institute of Electrical and Electronics Engineers Inc., 2014. p. 1544-1547 6865442.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Vasudevan, M & Chakrabarti, C 2014, Image processing using approximate datapath units. in Proceedings - IEEE International Symposium on Circuits and Systems., 6865442, Institute of Electrical and Electronics Engineers Inc., pp. 1544-1547, 2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014, Melbourne, VIC, Australia, 6/1/14. https://doi.org/10.1109/ISCAS.2014.6865442
Vasudevan M, Chakrabarti C. Image processing using approximate datapath units. In Proceedings - IEEE International Symposium on Circuits and Systems. Institute of Electrical and Electronics Engineers Inc. 2014. p. 1544-1547. 6865442 https://doi.org/10.1109/ISCAS.2014.6865442
Vasudevan, Madhu ; Chakrabarti, Chaitali. / Image processing using approximate datapath units. Proceedings - IEEE International Symposium on Circuits and Systems. Institute of Electrical and Electronics Engineers Inc., 2014. pp. 1544-1547
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