Abstract
A new method for hiding secret information in color images was proposed, in which bit planes were treated as binary images. A set of rules was used to check boundary pixels in the bit planes for data embedding eligibility. These rules can ensure correct extraction of the secret data from the stego-image without any other additional information. A key was introduced in identifying the eligible embedding positions to enhance security. Experiments show that, at an embedding rate of 1.5 bits per color pixel, the stego-images have no perceptual and histogram abnormality with PSNR values greater than 40 dB, and can resist several effective methods for steganalytical detection, achieving a good trade-off between security and embedding capacity. It also can solve the difficult problem that format change, data embedding, information extraction of the image containing secret may happen when being processed or compressed, and can resist several effective methods for steganalytical detection.
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