The DCT coefficients are arranged in a specific way, and then the watermark is embedded based on odd-even difference for optimal embedding.
提出一种鲁棒的DCT域盲水印算法，将DCT系数进行特殊的自定义排列分组，并根据奇偶差实现水印的最优化嵌入。
Based on the Discrete Cosine Transform (DCT) coefficient histogram difference sequences of JPEG images, a new steganalytic method was proposed to realize the steganalysis of JPEG MB2.
基于JPEG图像的离散余弦变换（DCT）系数直方图差值序列，提出一种新的检测JPEGMB2隐写术的方法。
A new watermark scheme based on DCT is presented in this paper, which has following features:(1)the difference between the watermarked image and the original is perceptually invisible;
给出了一种基于DCT变换的数字水印策略，它有以下特点：（1）隐藏效果好，视觉系统无法看出与原图像的区别；
The main idea lies in decomposing the difference frame of prediction in a redundant dictionary with much more basis functions, giving up traditional lattice DCT transform.
基本思想是对于预测 误差图像信号的分解，不再采用传统的晶格DCT变换，而是选择采用一个拥有更多基函数的冗 余字典集合。
The main idea lies in decomposing the difference frame of prediction in a redundant dictionary with much more basis functions, giving up traditional lattice DCT transform.
基本思想是对于预测 误差图像信号的分解，不再采用传统的晶格DCT变换，而是选择采用一个拥有更多基函数的冗 余字典集合。
应用推荐