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DCT-watermark--
- DCT变换的水印嵌入和提取 根据相似性的值就可以判断图像中是否含有水印-DCT watermark embedding and extraction according to the similarity value can determine whether it contains a watermark image
DCT---
- DCT变换的水印嵌入和提取 根据相似性的值就可以判断图像中是否含有水印-DCT watermark embedding and extraction according to the similarity value can determine whether it contains a watermark image
DCT
- DCT变换系数的求解及丢掉一部分高频信息后的重建图像-Solving and lost part of the high-frequency information of the reconstructed image of the DCT coefficients
Arnold-DCT
- 在一张图片里嵌入一些信息 通过DCT变换之后可以再从图片中把这些信息提取出来-Embedded in a picture by DCT transform can picture these extracted
DCT-transformation
- 利用mfc实现DCT变换,程序简单可读性强,适合初学者使用-Mfc DCT transform, readable simple procedures, suitable for beginners to use
DCT
- 利用DCT变换实现两幅大小相同的图像的水印嵌入,包含水印图像的处理,水印的嵌入和提取。及PNSR的计算-DCT transform two of the same size image of the watermark embedding, contain watermark image processing, the watermark embedding and extraction. And PNSR calculation
DFT-and-DCT-transformations
- 二维离散傅里叶变换和离散余弦变换同属于图像的二维正交变换,它们在图像处理中有 着极为重要的应用价值。利用这些正交变换可以获得图像的频域信息,从而实现图像的增强、复原、编码和描述。本文将描述对图像进行DFT 和DCT 变换的过程。在进行DFT 变换后,还会将图像的幅频、相频特性进行置换操作后反变换,并探讨其中的规律;而在DCT 变换后,还将探讨如何选取DCT 系数点以实现图像的复原。请先阅读压缩包内的pdf文档。-This code implements the DFT and DCT tra
watermark-dct
- 一种基于DCT变换的水印嵌入和提取的程序。-Based on the DCT watermark embedding and extraction procedures.
DCT-based-image-coding-
- 基于DCT变换的图像压缩matlab实现,开发环境为matlab-DCT-based image compression matlab implementation, development environment for matlab
watermark-JPEG-and-DCT
- 自己总结的关于JPEG压缩的过程以及DCT变换的步骤-The main story about those files is the process of JPEG compression and DCT transform
dct
- 读取图像,然后对图像进行dct变换,并保存-Dct transform the image and save
DCT-transform
- 读取彩色图像,灰度化后,进行DCT变换,然后进行DCT重构-After reading a color image, gray, DCT transform, and then reconstructed DCT
DCT
- DCT变换不同实现量化表量化,去除较小的变换系数,反变换后显示图像压缩效果!-Different implementations of the DCT quantization quantization table, removing a small transform coefficients, the display image compression inverse transform!
DCT
- 利用元胞数组对图像的每个8x8块进行DCT变换后,重整图像,在左上角显示图像概貌-After the use of cellular arrays for each 8x8 block DCT transform image, reforming the image is displayed in the upper left corner of the image overview
DCT--and--FFT
- 实现DCT变换和FFT变换的图像压缩, 比较两者性能的差异-The DCT transform and FFT transform image compression
dct
- 对图片进行 离散余弦变换 DCT变换 对图片进行 离散余弦变换 DCT变换-DCT
DCT
- 基于DCT域的数字水印算法主要包括水印调制、水印嵌入和水印提取,首先在嵌入载体图像之前用Logistic混沌序列对水印进行调制,得到一个只有+1和-1随机序列的水印,同时将载体图像进行全局DCT变换,然后将水印图像嵌入人类视觉系统最重要的部分,即DCT最大的系数,DC(Direct Current)部分也包含在这最大的系数中,这部分的系数满足人类视觉特性,会使水印嵌入的性能更好。嵌入算法是将水印与这些系数进行相乘获得新的系数,再用新的系数来替换原来的系数,即获得嵌入水印后的离散余弦域的图像,然后
DCT
- 用C#语言编写的通过DCT变换实现图像压缩 数字图像处理实验报告-Written in c# by DCT transformation to realize image compression
dct
- 图像处理很重要,那只保留我们想要的信息就比较重要,程序是传统图像编码中的dct变换编码处理-Image processing is very important, the only retain the information we want is more important, the program is a traditional image coding in DCT transform coding processing
dct
- 用matlab对图像进行DCT变换,过滤掉一些能量低的部分,再进行反变换恢复图像,并进行展示。-Using matlab for image DCT, filtering out some of the low energy part, then the inverse transform to restore the image and display.