Utilization of Edge Position for Digital Image Watermarking using Discriminant Analysis

A low complexity, pixel based watermarking technique has been used in this paper on the edge areas of an image to improve the quality and security of an image. The method proposed in this paper while maintaining robustness against smoothing and compression, improves the quality of the different types of images. To evaluate the quality of the image after applying the proposed technique the parameters such as Peak Signal to Noise Ratio (PSNR) and Structural Similarity Index (SSIM) has been computed. The watermark is embedded into selected Channels of pixel. The proposed method supports high watermark embedding capacity. The robustness of the image is also evaluated against the Gaussian filtering and JPEG compression parameters adapting noise. After performing all the computations the results has been obtained which shows better quality and security of the image as compared to the techniques applies and implemented in the previously performed researches.

Author(s): Rajeev Raghuwanshi, Pankaj Kumar Sahu and Sanjiv Sharma

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