Apparatus and method for reversible data hiding for JPEG images

Details Apparatus and method for reversible data hiding for JPEG images Apparatus and method for reversible data hiding for JPEG images

2011-07-05

2011-07-05

Le, Brian Q (Department: 2624)

Image analysis

Image compression or coding

C382S100000, C382S251000, C382S169000, C382S235000

Reexamination Certificate

active

07974477

ABSTRACT:
Embodiments of the invention are directed toward reversible/invertible and lossless, image data hiding that can imperceptibly hide data into digital images and can reconstruct the original image without any distortion after the hidden data have been extracted in various digital image formats including, but not limited to Joint Photographic Experts Group (JPEG). In particular, embodiments of the invention provide a lossless data hiding technique for JPEG images based on histogram pairs. that embeds data into the JPEG quantized 8×8 block DCT coefficients and achieves good performance in terms of peak signal-to-noise ratio (PSNR) versus payload through manipulating histogram pairs with optimum threshold and optimum region of the JPEG DCT coefficients. Furthermore, the invented technology is expected to be able to apply to the I-frame of Motion Picture Experts Group (MPEG) video for various applications including annotation, authentication, and forensics.

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