Avishek Raychoudhury

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Image compression is currently a prominent topic for both military and commercial researchers. Due to rapid growth of digital media and the subsequent need for reduced storage and to transmit the image in an effective manner Image compression is needed. Image compression attempts to reduce the number of bits required to digitally represent an image while(More)
In this paper, a new technique for hiding the data of images has been proposed. This method uses 3-dimentional discrete cosine transformation scheme, along with 2-dimentional discrete cosine transformation. The method proposed in this paper hides two target images behind one cover image thereby increasing the data hiding capacity greatly. For the cause of(More)
Steganography is the act of hiding a message inside another message in such a way that can only be detected by its intended recipient. Naturally, there are security agents who would like to fight these data hiding systems by steganalysis, i.e. discovering covered messages and rendering them useless. There is currently no steganography system which can(More)
A technique for hiding the data of images has been proposed in this paper. At the source, the image that is to be hidden (target image) is encoded within another image (cover image). Firstly, the cover image and the target image can be of any size, which will be adjusted by our resize function thereby, removing the size constraint. Secondly, for the(More)
In this paper, a technique for hiding the data of images has been proposed. The proposed method is used to hide an image file entirely with in another image file keeping two considerations in mind, which are Size and Degree of Security. At the source, the image that is to be hidden (target image) is encoded within another image (cover image). Firstly, the(More)
In this paper, a technique for hiding the data of images using palette based approach with the concept of run length has been proposed. At the source, the image which is to be hidden (target image) is encoded within another image (cover image). Firstly, the cover image and the target image can be of any size which will be adjusted by our resize function(More)
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