摘要：High capacity hiding information algorithms in binary host image is developed according to characteristics of binary image. The binary host image is first divided into blocks of size 2×2, and then each sub-block adaptively determines the embedded bits number and their positions according to the difference between its black pixel and white pixel number. Each sub-block in the transitional block between black pixel and white Pixel can hide at least two bits messages. Therefore, its embeddable capacity is two times more than that of other presented blind algorithms.
