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What type of digital picture formats are best suited for use in steganography?
IMAGES FORMATS JPEG Image is a popular cover image format used in steganography. The compression method is usually loosely compression, meaning that some visual quality is lost in the compression process and cannot be restored. BMP are characterized by a lossless LSB plane.
Which compression format is used in image steganography?
Under this scenario PNG is the best format due to the fact that it uses a lossless compression so the substitutions made during the whole process of LSB steganography is not lost. PNG also provides huge storing capacity and high quality image after steganography thus, avoiding detection by just looking at the image.
What is image steganography?
Image steganography refers to hiding information i.e. text, images or audio files in another image or video files. The current project aims to use steganography for an image with another image using spatial domain technique. This hidden information can be retrieved only through proper decoding technique.
Which is the best way to use steganography?
Steganography can be accomplished by simply appending the secret message in the text file “Message.txt” into the JPEG image file “Cover.jpg” and produces the stego image “Stego.jpg.” The message is packed and inserted after the EOF (End of file) tag.
Is the science of steganography in the future?
The science of digital steganography is expected to draw more attention in the future. Its use can benefit wide arrays of user segments. Nearly all people who use computers, tablets, and smartphones need to use at least one hiding technique in order to protect their private data.
How is DCT used in JPEG lossy compression?
DCT is used extensively with video and image compression, e.g., JPEG lossy compression. Most of the techniques use JPEG images as carriers to embed their data. For example, Li and Wang [46] presented a steganographic method that modifies the QT and inserts the hidden bits in the middle frequency coefficients.
How is a steganographer used in spatial domain?
In spatial domain methods, a steganographer modifies the secret data and the cover medium in the spatial domain, which involves encoding at the level of the LSBs. Although this method is simpler, it has a larger impact compared to the other three types of methods [42].