A Survey on 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 an art of hiding the existence of secret message to 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 paper, proposed an algorithm using chaos on EZW compression technique to provide security along with image compression and chaos encryption used to reduce the negative compression.And also discuss two-level DWT using steganography to used hide information and securely transfer image to receiver side. This technique used to a secure data to narrow bandwidth and unsecure channel to transmit a successfully to receiver side.

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