Digitial Image Steganography

Digital steganography is concealing a message in a digital format. The word digital describes a sound, image, or data file that can be stored electronically. Steganography comes from the Greek words meaning, “to cover tightly” and “writing”. Digital Image Steganography main idea is to hide data.

From the beginning era of technology, steganography has improved greatly. The now use images, audio, and text to encode a secret message. Steganographic coding may be inside of a transport layer such as a document file, image file, program or protocol. Media files are ideal for steganography transmission because of their large size. For example, a sender might start with a image file and adjust the color of every 100^thpixel.

      

http://www.academia.edu/277020/Digital_Image_Steganography_Survey_and_Analysis_of_Current_Methods#outer_page_4