Reversible Data Hiding By Adaptive IWT-coefficient Adjustment.
Ching-Yu Yang, Chih‐Hung Lin, Wu-Chih Hu · J. Inf. Hiding Multim. Signal Process. · 2011
In this paper, a novel reversible watermarking method based on the adap- tive IWT-coecient adjustment is proposed. A host image is rst decomposed into the integer wavelet transform (IWT) domain. Subsequently, a secret message is embedded into the low-high (LH), high-low (HL), and high-high (HH) sub-bands of the IWT using the adaptive IWT-coecient adjustment. Experiments conrm that the proposed method not only completely recovers a host medium but also generates marked images of a high perceived quality and hiding capacity. Moreover, the marked images are robust against manipulations such as JPEG2000, JPEG, brightness adjustment, cropping, and inver- sion.