Image Security using Self embedding Fragile Watermarking Method

Swapna Enugula,Srujana V,Vikram V,Karthik Nasani,Shruthi G

doi:10.47392/irjash.2020.38

Abstract

Rapid development in technology to provide security to data in the form of images is a major issue. So to provide security to the original image, watermark image embedded in it. In this paper we use self embedded watermark using fragile watermark technique. Authenticity of an image can be tested using block based technique of self embedding fragile watermarking; to represent the entire image the feature image watermark is used. In each 2x2non overlapping block four authentication bits and eight recovery bits are generated. In each block three least significant bits are embedded with authentication bits and recovery bits are embedded in the three least significant bits of the mapped block This paper mainly summarizes the Selection of image, method of watermark insertion, detection and tamper localization and recovery procedure. The experimental results of this proposed method shows visual quality of image recovery better than some of the schemes.

Highlights

Digital image processing technology is highly diverse; the image content can be manipulated by unauthorized users
Confidential information is inserted in original image, while the secret information is a watermark [2,3].The watermark technique is used for component selection
In fragile watermark pixel wise scheme the watermark information is generated from the grey pixel value of the host image .In case of block wise watermark scheme, the original image is sub divided into blocks

Summary

Introduction

Digital image processing technology is highly diverse; the image content can be manipulated by unauthorized users. Research on detection and localization of tampered images is an important issue. For this digital watermarking technique is widely used. In this technique of inserting secret information or image’s information into an original image prior to sending. Confidential information is inserted in original image, while the secret information is a watermark [2,3].The watermark technique is used for component selection. In self embedded watermarking scheme the watermark is generated from the original image. In fragile watermark pixel wise scheme the watermark information is generated from the grey pixel value of the host image .In case of block wise watermark scheme, the original image is sub divided into blocks.

Principle of Operation

Procedure of Block wise segmentation

Start the loop for thresholding

Watermark Embedding

Conclusions