Enhanced spread spectrum image watermarking with compression-encryption technique

Abstract

In this paper we work on the watermarking through which we can improve the security. In this technique the whole watermark image is embed in the original image. The embedding process can improve the security of the image. Security plays an important role during the transmission of message or data from sender to receiver. In this paper we use a combination of compression and encryption technique and then watermarking. In this first of all compression is performed, we use the JPEG2000 compression technique, JPEG2000 use the core compression algorithm Embedded Block Coding with Optimized Truncation (EBCOT), The EBCOT algorithm provide the superior compression performance and on that compressed image encryption is performed, we use the RC4 encryption technique, when encryption is completed then on that encrypted image watermarking is applied. In our proposed work we can divide the watermark image into blocks. In this we can calculate the kernel of the original image through which we can find the area where the watermark image is embed. Here we propose an efficient technique of spread spectrum watermarking which provides less attacks as compared to the other existing technique.