Compared with flat regions

image textures have more randomness in structure.As a result

the embedding of secret message in rich textures can obtain better security.Based on the relationship between the least two significant bits of neighboring pixels

we propose a pixel block-based adaptive steganographic algorithm with embedding priority given to image texture regions.In other words

the embedding order is from rich textures to flat regions.Our criterion for texture assessment can adaptively allocate image regions for embedding according to the length of the secret message.To deal with possible irregular embedding blocks

we propose a pixel value modification solution.We have justified this solution mathematically.Experimental results have demonstrated that our algorithm outperforms two established LSB (least significant bit) embedding algorithms and one current edge adaptive steganographic algorithm in terms of embedding efficiency;meanwhile

our algorithm often has stronger resistance to the four representative steganalytic algorithms.