数字水印技术近年来得到了较大的发展,基于变换域的水印技术是目前研究的热点。该文提出了一种基于DCT域的自适应水印算法。实验结果表明,这种算法具有良好的性能,实现的水印具有不可见性,而且具有较好的鲁棒性。 -digital watermarking technology in recent years has been substantial development, based on the transform domain watermarking technology is a ho

用java实现二维dct变换及其idct逆变换，-The realization of two-dimensional transform and its inverse transform dct

用JAVA实现的离散余弦变换，离散余弦变换是各种压缩算法用到的-JAVA Implementation of Discrete Cosine Transform, Discrete Cosine Transform is used in a variety of compression algorithms

用JAVA语言实现的一个数字图像的傅立叶变换和离散余弦变换。用到了傅立叶变换的快速算法FFT和离散余弦变换DCT。 -JAVA programming language to achieve a digital image of the Fourier transform and discrete cosine transform. Use of the Fourier transform, fast algorithm FFT and discrete cosine transform D

求取一段由加速度传感器获取的加速度序列信号的离散余弦变换-For the discrete cosine transform for a period of acquisition by the acceleration sensor of acceleration signal