Efficient Lifting Based Wavelet Transform in Image Processing for Watermarking Application

Author(s):

Gifty K Baby , TIST,ERNAKULAM; Prof.G. K. Sadanandan

Keywords:

Lifting Schme, Discrete Wavelet Transform, Watermarking

Abstract:

Digital Watermarking has emerged as a new area of research in an attempt to prevent illegal copying and duplication. The discrete wavelet transform (DWT) is being increasingly used for image coding. The DWT can be used in Watermarking application. Digital watermarking technology as an important branch of information hiding technology research field. In the development of Internet today, research on digital watermarking technology for copyright protection has great practical significance. The project gives of efficient lifting based wavelet transform in image processing. The Discrete Wavelet Transform (DWT) is the transform of choice at the heart of recent image compression algorithms. This is due to the fact that DWT supports features like progressive image transformation and ease of compressed image manipulation. This project aims at implementation of efficient lifting based 2D DWT in image processing for watermarking application. A 2-D separable discrete wavelet transform is equivalent to two consecutive 1-D transforms. DWT has traditionally been implemented by convolution. Such an implementation demands both a large number of computations and a large storage features that are not desirable for either high-speed or low-power applications. Lifting-based scheme that often requires far fewer computations has been proposed for the DWT. This is suitable for VLSI implementation. Lifting scheme based DWT method leads a speed-up and a fewer computation compared to the classical convolution-based method.

Other Details:

Manuscript Id	:	IJSTEV2I8096
Published in	:	Volume : 2, Issue : 8
Publication Date	:	01/03/2016
Page(s)	:	332-336

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