Performance Evaluation of Color Image Watermarking

ISBN-13: 9783847305132 / Angielski / Miękka / 2011 / 140 str.

Patil Ramana Reddy;Munaga .V.N.K. Prasad;D.Sreenivasa Rao

Opis

The growth of the digital multimedia technology and development of the internet allow people to process, deliver and store information more easily. Digital images can be easily captured by digital cameras and due to ease of network connectivity, the access and sharing of images has become extremely feasible and convenient. Copyright protection of these images can be done by using digital image watermarking, watermarking is embedding a identification logo into cover image for its protection. Most of the existing image watermarking techniques is implemented for grey scale images, in this book attempt has been made to use existing grey scale watermarking techniques for color images. Four types of watermarking techniques are presented in this book, i.e. (1) Spread spectrum and correlation (2) Modified wavelet tree quantization (MWTQ) (3) Integer wavelet transforms (IWT) (4) Set Partitioning in Hierarchical Trees (SPIHT). The wavelet let transform is applied to blue plane of color image to embed the watermark. Performance of these techniques is evaluated in terms of PSNR, MSE, NCC, BCR, ET and RT. The techniques are performing well with and without attacks.

O autorze

Dr P. Ramana Reddy is working as an Associate Professor & Head, ECE Department, JNTUACE, Anantapur, India. Dr M.V. N. K. Prasad is working as an Assistant Professor at the IDRBT, Hyderabad, India. Dr.D.Sreenivasa Rao is working as a Professor, ECE Department, JNTUHCE, Hyderabad, India.