A Color image Watermarking Scheme Based On QR Factorization Logistic and Lorentz Chaotic Maps
S.Arogya Manogna
, K.CHAITANYA
digital Image Watermarking, DWT, CZT, Entropy, SVD, QR.
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.
"A Color image Watermarking Scheme Based On QR Factorization Logistic and Lorentz Chaotic Maps", IJSDR - International Journal of Scientific Development and Research (www.IJSDR.org), ISSN:2455-2631, Vol.3, Issue 7, page no.334 - 342, July-2018, Available :https://ijsdr.org/papers/IJSDR1807056.pdf
Volume 3
Issue 7,
July-2018
Pages : 334 - 342
Paper Reg. ID: IJSDR_180550
Published Paper Id: IJSDR1807056
Downloads: 000346998
Research Area: Engineering
Country: KADAPA, ANDHRA PRADESH , INDIA
ISSN: 2455-2631 | IMPACT FACTOR: 9.15 Calculated By Google Scholar | ESTD YEAR: 2016
An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.15 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator
Publisher: IJSDR(IJ Publication) Janvi Wave
