A Dynamic Choosing Strategy of Coefficients for DCT Image Information Hiding
Proposes a new strategy for choosing the positions of the middle frequency coefficients of DCT transformed field dynamically, this strategy analyses every cover image separately to find the best position of the middle frequency coefficients for hiding. Further, experimental results show that the strategy can improve the visual quality of the stego cover image, i.e. transparency of the hiding data, and the strategy can also decrease the bit error rate.