中文摘要：

现有BTC域数据隐藏算法没有充分利用图像视觉感知特性,不能获得高的隐藏容量与隐秘图像质量。为此,通过充分挖掘图像BTC域视觉感知特性,提出一种BTC域自适应数据隐藏算法。算法利用BTC域亮度特性与边缘特性,计算出图像BTC域视觉因子;根据视觉因子将秘密信息自适应地嵌入到BTC域位示图中。实验表明该算法能较好地实现隐藏容量与隐秘图像质量之间的有效平衡。与同类BTC域隐藏算法相比,隐藏容量相同时,本文算法隐秘图像PSNR值高出约1.4dB。

英文摘要：

Some existing BTC-based data hiding algorithms do not fully exploit visual perception of the host images,and cannot obtain high hiding capacity and visual quality of stego-images.To solve this issue,an image adaptive data hiding scheme in BTC domain is proposed by utilizing the visual perception characteristics in BTC domain.A visual perception factor is computed by employing luminance and texture characteristics in BTC domain.Secret message bits are adaptively embedded into the bitmap in BTC domain.Experimental results show that proposed algorithm can achieve a good balance between hiding capacity and stego-image quality.On the average,when compared with previous BTC-based steganographic scheme,this scheme has about 1.4 dB higher PSNR value under the same hiding capacity.