A Survey: Digital Watermarking with its Applications Using Different Methods

Abstract

We presented in this survey,digital watermarking is an important method to add hidden patent notices to digital audio, image. The Watermarking techniques with frequency domain make a better results either concern with image excellence or invisibility of the watermark. In this paper, we present review on Image Watermarking for Good Robustness. In this paper, we talk about the various factors used in watermarking, properties and application area where water-marking technique requires to be used. Also a survey on the some new work is done in image watermarking field.

A Comparative Analysis On Image Denoising Using Different Median Filter Methods

“…It decomposes the image into special frequency stages corresponding to the low frequency, middle frequency, and high frequency. The magnitude of DWT coefficients is excessive in the lowest bands (LL) at every stage of decomposition and is least for other high bands [4].…”