Dynamic Power Reduction in Modified Lifting Scheme Based DWT for Image Processing

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Dr. C.Chandrasekhar
Dr. C.Chandrasekhar
σ
Dr. S.Narayana Reddy
Dr. S.Narayana Reddy
α Sri Venkateswara University Sri Venkateswara University

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Dynamic Power Reduction in Modified Lifting Scheme Based DWT for Image Processing

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Abstract

Image compression is one of the major applications in image processing that imposes greater design challenges for VLSI design engineers in design and development of low power and high speed architectures. DWT is used in image compression for transformation of image from spatial to frequency domain. In this paper, DWT architecture based on lifting scheme is considered and dynamic power reduction is achieved with suitable modifications to the architecture and adoption of low power techniques. The interdependency of scaling and dilation coefficients is simplified to single hierarchy and thus reduces latency and increases throughput. Wallace tree multiplier and carry select adder are used in realizing 1D DWT architecture. The hierarchy in the design enables to adopt multi-stage and hierarchical clock gating technique thus reducing dynamic power. Power gating and DVFS techniques are also adopted to optimize power dissipation.

References

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Dr. C.Chandrasekhar. 2012. \u201cDynamic Power Reduction in Modified Lifting Scheme Based DWT for Image Processing\u201d. Global Journal of Research in Engineering - F: Electrical & Electronic GJRE-F Volume 12 (GJRE Volume 12 Issue F8): .

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

Version of record

v1.2

Issue date

July 27, 2012

Language
en
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Image compression is one of the major applications in image processing that imposes greater design challenges for VLSI design engineers in design and development of low power and high speed architectures. DWT is used in image compression for transformation of image from spatial to frequency domain. In this paper, DWT architecture based on lifting scheme is considered and dynamic power reduction is achieved with suitable modifications to the architecture and adoption of low power techniques. The interdependency of scaling and dilation coefficients is simplified to single hierarchy and thus reduces latency and increases throughput. Wallace tree multiplier and carry select adder are used in realizing 1D DWT architecture. The hierarchy in the design enables to adopt multi-stage and hierarchical clock gating technique thus reducing dynamic power. Power gating and DVFS techniques are also adopted to optimize power dissipation.

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Dynamic Power Reduction in Modified Lifting Scheme Based DWT for Image Processing

Dr. C.Chandrasekhar
Dr. C.Chandrasekhar Sri Venkateswara University
Dr. S.Narayana Reddy
Dr. S.Narayana Reddy

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