Implementing Adaptive Steganography by Exploring the Ycbcr Color Model Characteristics

Stegnography is a new way of secret communication the most widely used mechanism on account of its simplicity is the use of the least significant bit. We have used the least significant bit (2 LSB and 4 LSB) substitution method. Depending upon the characteristics of the individual portions of cover image we decide whether to use 2 LSB or 4 LSB thus it is an adaptive stegnography technique. We used one of the three channels to behave as indicator to indicate the presence of hidden data in other two channels. The module showed impressive results in terms of capacity to hide the data. In proposed method, instead of using RGB color space directly, YCbCr color space is used to make use of human visual system characteristic.

Authors:

• Surbhi Gupta
• Alka Handa
• Parvinder S.Sandhu

Keywords:

• Stegoimage
• steganography
• Pixel indicator
• segmentation
• YCbCr..

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