International Journal of Scientific Development and Research - IJSDR
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Volume 6 | Issue 3

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Paper Title: A Color image Watermarking Scheme Based On QR Factorization Logistic and Lorentz Chaotic Maps
Authors Name: S.Arogya Manogna , K.CHAITANYA
Unique Id: IJSDR1807056
Published In: Volume 3 Issue 7, July-2018
Abstract: In this work, a new image watermarking algorithm on color images is proposed. The proposed algorithm divides a cover image into three color bands of red, green and blue. Then the following tasks are done on all three channels separately. First, each color band is divided into patches of small sizes then the entropy of each patch is calculated. At this step a threshold is found based on the average entropy of all patches and following is applied to all patches which have entropy lower than the threshold. A wavelet representation of each patch are given by applying a discrete wavelet transform.(DWT), Then Singular value decomposition (SVD) orthogonal-triangular decomposition and a chirp z-transform (CZT) are used to embed a watermark on the cover image. Several signal processing attacks are applied on watermarked images in order to robustness of the algorithm. The Proposed algorithm is compared with one conventional and two state-of the-art algorithms. Experimental results show superiority of the proposed algorithm compare with other algorithm in the area of image watermarking.
Keywords: digital Image Watermarking, DWT, CZT, Entropy, SVD, QR.
Cite Article: "A Color image Watermarking Scheme Based On QR Factorization Logistic and Lorentz Chaotic Maps", International Journal of Science & Engineering Development Research (www.ijsdr.org), ISSN:2455-2631, Vol.3, Issue 7, page no.334 - 342, July-2018, Available :http://www.ijsdr.org/papers/IJSDR1807056.pdf
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Publication Details: Published Paper ID: IJSDR1807056
Registration ID:180550
Published In: Volume 3 Issue 7, July-2018
DOI (Digital Object Identifier):
Page No: 334 - 342
Publisher: IJSDR | www.ijsdr.org
ISSN Number: 2455-2631

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