DWT-SVD-Based Color Image Watermarking Using Dynamic-PSO
The main objectives of digital image watermarking schemes are to provide acceptable level of both imperceptibility and robustness for wide variety of host and watermark images. To support watermarking scheme in accomplishing these objectives, suitable wat
- PDF / 161,770 Bytes
- 9 Pages / 439.37 x 666.142 pts Page_size
- 77 Downloads / 233 Views
Abstract The main objectives of digital image watermarking schemes are to provide acceptable level of both imperceptibility and robustness for wide variety of host and watermark images. To support watermarking scheme in accomplishing these objectives, suitable watermark strength is identified in the form of scaling factor using Dynamic-PSO (DPSO) for colored images. A non-blind, DWT-SVD-based watermarking scheme is used to embed watermark in host image. Results achieved through DPSO are compared with PSO and other widely accepted variants of PSO. Experiment results demonstrate that performance of underline watermarking scheme when used with DPSO is better than other variants of PSO. Keywords Particle swarm optimization (PSO) mization Scaling factor Imperceptibility
⋅
⋅
⋅
⋅
Image watermarking Robustness
⋅
Opti-
1 Introduction The last decade shows rapid increase in use of digital content such as images, audio, or video due to their easy availability through Internet. It is safer to apply techniques that provide ownership protection, content authentication, etc., for digital data before their distribution on Internet. Digital watermarking [1] is one promising and widely used solution to guard digital media including digital images from being illegally used. In digital watermarking, authorized information (watermark image) is embedded imperceptibly into the original data (host image) to prove their authenticity and N. Saxena (✉) ⋅ K.K. Mishra ⋅ A. Tripathi CSED, MNNIT Allahabad, Allahabad, India e-mail: [email protected] K.K. Mishra e-mail: [email protected] A. Tripathi e-mail: [email protected] © Springer Nature Singapore Pte Ltd. 2018 S.K. Bhatia et al. (eds.), Advances in Computer and Computational Sciences, Advances in Intelligent Systems and Computing 554, https://doi.org/10.1007/978-981-10-3773-3_34
343
344
N. Saxena et al.
ownership. The embedded information can be retrieved by applying contrary process. The embedding process of the watermark should not affect the quality of the image [2]. At the same time watermarked images are also prone to different modification attacks. These attacks destroyed or removed watermark from watermarked images, result to failure of recovering watermark at receiver end. Hence digital watermarking technique should be robust enough to overcome the effect of different modification attacks on watermarked image. There are several criteria to classify watermarking schemes such as based on the availability of original content during the detection of watermark Blind or Non-blind, based on underlined domain spatial domain and frequency domain schemes. The frequency domain includes Discrete Cosine Transform (DCT), Discrete Fourier Transform (DFT), and Discrete Wavelet Transform (DWT) [3–5]. Further singular value decomposition (SVD)-based watermarking techniques are proposed to improve performance [6–8]. Watermarking schemes keep the balance between robustness and perceptual quality by controlling the percentage of the watermark embedded into host image, i.e., scaling
Data Loading...
