Research Cell: An International Journal of Engineering Sciences

Manish Mahajan ¹, Navdeep Kaur ², Shashi Bhushan ³

Affiliations
1 Punjab Technical University, Kapurthala, IN
2 Department of Computer Science Engineering., SGGSWU, Fatehgarh Sahib, IN
3 Department of Information Technology, Chandigarh Engineering College, Landran, Mohali, IN

Abstract

Steganography is a technique in which secret message is hidden in some media like image file, audio file or video file. The objective of the steganography is to prevent the unauthorized user to estimate that certain secret communication is going on by concealing the very existence of secret message. As it is clear this thing involves deceiving the human visual system (HVS) to get an impression that some secret message is hidden in image or some other media file. Saliency model is one of the methods that generate a map corresponding to the attention region of Human Visual System. So Human Visual System (HVS) is a point of interconnection between two concepts - Steganography and Saliency Map. In this work we represent a method for data hiding in images based on saliency map.

Keywords

Saliency Map, Wavelet Domain, Model Based Steganography, Imperceptibility.

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Manish Mahajan ¹, Navdeep Kaur ², Shashi Bhushan ³

Affiliations
1 Punjab Technical University, Kapurthala, IN
2 Department of Computer Science Engineering, Chandigarh Engineering College, Landran, Mohali, IN
3 Department of Information Technology, Chandigarh Engineering College, Landran, Mohali, IN

Abstract

Visual system of human beings does not process the complete area of image rather focus upon limited area of visual image. But in which area does the visual attention focused is a topic of hot research nowadays. Research on psychological phenomenon indicates that attention is attracted to features that differ from its surroundings or the one that are unusual or unfamiliar to the human visual system. Detection of visually salient image regions is useful for applications like object segmentation, adaptive compression, and object recognition. Object or region based image processing can be performed more efficiently with information pertaining locations that are visually salient to human perception with the aid of a saliency map. Recently many authors have used wavelet domain for detection of salient regions. This domain has shown promising results but almost all the authors have ignored the detail components of wavelet domain which may have some useful information. So in this paper we have tried to use the wavelet domain method to detect salient regions using approximation and all detail components. Further this saliency map will be used for steganography.

Keywords

Saliency Map, Wavelet Transform, Approximation Coefficients, Detail Coefficients, Salient Region.

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