A Hybrid Approach for Image Steganography with Compression to Enhance Security and Accuracy

Image Processing

Security of secret data has been a major issue of concern from ancient time. Steganography and cryptography are the two techniques which are used to reduce the security threat. Cryptography is an art of converting secret message in other than human readable form. Steganography is a technique of hiding the secret message and transmission of confidential data through public channel like Internet. These techniques are required to protect the data over the network. An Advance approach the image security along with compression and encryption used to a high quality of secret message and data. Image compression is used to minimize the amount of memory and fast transmission over internet to represent an image or data. And encryption is used to protect the data over the noise and different attacks. In this thesis, proposed an algorithm steganography and EZW compression technique to provide hiding the large amount of secret data with Chaos encryption used to securely transfer image to receiver side. And also discuss 2-level DWT using steganography to reduce the variation of recovered image. This technique used to a securely data transfer from narrow band and unsecure channel.

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