搜索资源列表
DCT
- 对图像信号进行DCT压缩和编码及加噪滤波后的恢复-DCT on the image signal compression and coding and increase the recovery of the filtered noise
dctannprotected
- High information redundancy and correlation in face images result in efficiencies when such images are used directly for recognition. In this paper, discrete cosine transforms are used to reduce image information redunda
DCT_SVD
- 本文提出一种在原始视频DCT(离散余弦变换)与SVD(奇异值分解)域自适应嵌入水印的算法。算法首先将视频流分割成一个个场景,场景中的视频图像被变换到DCT-SVD域中,水印量化嵌入在最大奇异上,实现了水印盲检测。同时实验证明该算法在满足透明性要求下也满足一定的鲁棒性要求,能够抵抗低通滤波、中值滤波、椒盐噪声、高斯噪声、H.264压缩攻击以及统计攻击和帧剪切等攻击。-This paper presents an original vide
yansuoDCT
- 适用于图像压缩的二维8×+8+DCT查表快速算法研究，纪绣花，张彩明-Applicable to two-dimensional image compression 8 ×+8+ DCT fast algorithm for look-up table, Ji embroidery, Cai-Ming Zhang
SVM_GA
- 提出一种基于支持向量机( SVM)和遗传算法(GA)的离散余弦变换(DCT)域盲数字图像水印方法. 该方法能自适应于图像的局部特征. 依据图像块的局部特性,利用SVM对图像块分类,自适应地确定水印嵌入强度, GA用来优化水印嵌入位置. 实验结果表明该方法有较好的不可见性和较强对抗攻击的鲁棒性.-Based on support vector machine (SVM) and genetic algorithm (GA), discre
YUVdct
- YUV序列打开，DCT变换，IDCT变换、量化、反量化等操作-YUV sequence of open, DCT transform, IDCT transform, quantization, inverse quantization operation
yousun
- 基于dct变换的水印算法，并进行有损压缩情形下的水印嵌入和提取-Dct transform based watermarking algorithm, and for lossy compression case the watermark embedding and extracting
dct
- 二维DCT编码，实现图像的运动估计，较好的完成估计任务。-Two-dimensional DCT coding for image motion estimation, a better estimate to complete the task.
mainidct0
- DCT IDCT 量子化变换DCT IDCT 量子化变换-DCT IDCT quanta
work
- 在DCT域进行图像检索，分别采取了对DCT块的边缘类型提取以及纹理特征提取两个方法-Image Retrieval in DCT domain, DCT blocks were taken on the edge of the type and texture feature extraction method of extracting the two
watermark
- 基于DCT的水印图像matlab代码，主要是水印嵌入和水印提取两大主要部分-DCT-based image watermarking matlab code, mainly watermark embedding and watermark extraction are two main parts
JND
- 将watson的DCT视觉模型计算出来，能够得到每个8*8块的系数的JND值- calculate watson s vision model,we can get the JND of every 8*8 s coefficients.
graydct
- DCT给灰度图像加二值的水印信息，运行显示四幅图，分别是原图像，水印图像，加水印的图像和提取的水印图像-DCT to gray image plus two watermark values, run the show four maps are the original image, watermark image, add watermark image and extracted watermark image
DFTandDCT
- （1）离散余弦变换DCT基底灰度图像绘制（2）离散傅里叶变换DFT基底灰度图像绘制-(1) discrete cosine transform DCT base gray image rendering (2) Discrete Fourier Transform DFT basal gray image rendering
dip4
- 对原始灰度图像进行图像压缩，对此图进行 8×8 DCT 变换后，分别只保留 DC系数，以及保留前 4、8、16 个变换系数(DC＋AC) ，然后再分别进行 IDCT 变换 -The original gray image compression, this map for 8 × 8 DCT transform, respectively, to retain only the DC coefficient, and to reta
DFT_and_DCT
- 对一幅图像进行DCT与DFT变换，分析变换后的高低频分量系数-DCT and DFT on an image, analysis of high frequency components of the transformed coefficient
hidedctadv
- 基于DCT的信息隐藏算法，水印技术方面的，用matlab开发的-Information hiding algorithm based on DCT, the watermark technology, developed with matlab
DCT_watermarking_System
- A gr8 Adaptive DCT based watermarking system is implemented with a nice GUI for embedding, extraction and attacks
ziliao
- 基于DCT变换的信息隐藏(数字水印)嵌入算法的设计(Matlab-DCT-based information hiding (digital watermark) embedded in the design of algorithms (Matlab
dct_transform
- dct快速变化，对于基于dct的数字水印算法有很大的帮助。-dct algorithm.