CAJ | 학술논문

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.
제출일충기우직방도대적JPEG도상무손수거은장방법.해방법통과조정직방도,재JPEG도상적양화후DCT중빈계수중감입은장수거.동시,능구재불수요원시도상적정황하대은장수거진행맹제취병무손회복도상수거.통과설치2개역치래선택조정적직방도대화진행조정적DCT계수괴,해방법능구재감입대수거량적동시의연보지교호적시각효과.
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.