Information Steganography Algorithm Based on Wavelet Transform is that low-frequency ingredient of watermark is embedded in low-frequency part of host image .

• 基于小波变换的信息隐写算法是把水印图象的低频成分嵌入到原始宿主图象的低频部分，其抗攻击能力和隐藏能力强，提取的水印图象质量良好。