Improved Capacity Collage Steganography Using Discrete Cosine Transformation [ READ ]
Nidhi Antony
Nowadays establishing secure communication has gained increasing relevance. One of the methods used for hidden communication is steganography, in which secret message is embedded into a carrier without attracting the attention of unintended recipients. Among the various steganography methods that have been proposed so far a new type of steganography, collage steganography hides the secret message in a more secure way. This paper presents an improved capacity collage steganography using DCT.The secret message, image pixels, coefficients, header files are embedded into cover image by using object images with transparent features and affine transformation parameters. Capacity analysis is used to select the cover image. The appearance of cover image is altered due to object image used for embedding. Template matching techniques are used to retrieve information.
Nidhi Antony
Nowadays establishing secure communication has gained increasing relevance. One of the methods used for hidden communication is steganography, in which secret message is embedded into a carrier without attracting the attention of unintended recipients. Among the various steganography methods that have been proposed so far a new type of steganography, collage steganography hides the secret message in a more secure way. This paper presents an improved capacity collage steganography using DCT.The secret message, image pixels, coefficients, header files are embedded into cover image by using object images with transparent features and affine transformation parameters. Capacity analysis is used to select the cover image. The appearance of cover image is altered due to object image used for embedding. Template matching techniques are used to retrieve information.
