What is different Steganography Technique in Image Steganography?
/ June 19, 2018

Steganography is the idea of hiding private or sensitive data or information within something that appears to be nothing out of the normal. The word steganography comes from the Greek Steganos, which mean covered or secret and –graphy mean writing or drawing. Therefore, steganography means, literally, covered writing Over the past few years, numerous steganography techniques that embed hidden messages in multimedia objects have been proposed. Different Techniques There have been many techniques for hiding information or messages in images in such a manner that the alterations made to the image are perceptually indiscernible. Common approaches are including: Figure 1 Different Steganography Technique Least Significant Bit (LSB) Least significant bit (LSB) insertion is a common, simple approach to embedding information in a cover image. The least significant bit (in other words, the 8th bit) of some or all of the bytes inside an image is changed to a bit of the secret message. When using a 24-bit image, a bit of each of the red, green and blue colour components can be used, since they are each represented by a byte. In other words, one can store 3 bits in each pixel. An 800 × 600 pixel image, can thus store…

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