摘要： 提出一种基于直方图对的JPEG图像无损数据隐藏方法。该方法通过调整直方图，在JPEG图像的量化后DCT中频系数中嵌入隐藏数据。同时，能够在不需要原始图像的情况下对隐藏数据进行盲提取并无损恢复图像数据。通过设置2个阈值来选择调整的直方图对和进行调整的DCT系数块，该方法能够在嵌入大数据量的同时依然保持较好的视觉效果。

关键词: 直方图对, 无损数据隐藏, JPEG图像, DCT系数

Abstract: This paper proposes a lossless data hiding technique for JPEG image based on histogram pairs. Hidden data are embedded into the JPEG image quantized DCT coefficients by adjusting the histogram and extracted out without the original image while the original image can be reconstructed without any distortion. It can obtain good performance in high payload and high PSNR with two optimum thresholds and optimum blocks and regions of the JPEG DCT coefficients.

Key words: histogram pairs, lossless data hiding, JPEG image, DCT coefficient

中图分类号: 

• TN911.72