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DCT
- 用matlab对一张图片进行DFT变换，DCT变换,比较保留20个DCT变换系数重构的图象与原始图像的差别.-Using matlab on a picture to DFT transform, DCT transform, compared to 20 DCT transform coefficients to retain the image reconstruction of the difference between the original image.
DCT
- 利用matlab实现基于DCT变换的变焦距图像融合-Using matlab to achieve DCT-based image fusion Zoom
dct
- 这是用matlab写的dct代码用于图像的信息的隐藏和提取。。部分老师写的哦。-This is used to write the DCT matlab code for the image and extract the hidden information. . Oh part of the Writing Teacher.
compressed-sensing-procedure
- 基于压缩感知的图像处理，分别使用二维DCT、FFT和一维dwt变换对图像信号进行稀疏变换，然后使用正交匹配追踪算法进行重构，在进行相应的逆变换-This is a image processing procedure based on compressed sensing which respectively uses two-dimensional DCT, FFT and one-dimensional dwt transform to sparse the image signal a
DCT
- 基于Matlab GUI的图像的DCT，自由调节压缩率，计算峰值信噪比，并图形化对比还原图像-Matlab GUI for image-based DCT, freely adjust compression rates, the peak signal to noise ratio, and reduction of image contrast graphic
dct
- JPEG压缩算法的核心是“视觉保真”原理，利用人类视觉系统特征进行处理，以达到最大图像数据压缩效果，实际上就是去除那些人眼不易觉察的信息。图像的空间频率对人的视觉至关重要，采用离散余弦变换可将图像分解成一组波，每个波有一个不同的空间频率，这样可以去除人类眼睛觉察不到的信息，而且还可使系统只保留重要的信息。-JPEG compression algorithm is the core of " visual fidelity" principle, the use of the
DCT
- DCT变换是图像图形处理中的很重要的一个压缩算法，此文件详尽的完成了DCT变换-DCT transform is image and graphics processing is very important to a compression algorithm, this document contains details of the completion of the DCT transform
DCT
- 本文设计基于DCT的人脸识别系统，首先结合当今人脸识别的背景和发展状况讨论了人脸识别的研究内容及在各方面的应用；然后研究了人脸识别进行预处理，讨论了人脸识别预处理的其他方法，分析各种方法的利弊，最后采用DCT（离散余弦变换）实现人脸图像预处理中的降维处理；接下来对人脸图像的特征提取进行了研究，简单叙述了几何特征提取和代数特征提取，同时深入研究了基于DCT和PCA变换的人脸图像特征提取，从而实现是否对人脸识别系统识别率有所提高的研究；对于分类器的选择，本文对两种分类器进行了探讨，即最近邻分类器和B
DCT
- 对测试图像分块、DCT和量化，将量化后的系数写成矩阵形式。-The test image block, DCT and quantization, the quantized coefficients written in matrix form.
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
DCT
- 读入一幅256*256图像，将它分成8*8pixel的若干块，对每块做DCT变换，保留Z型顺序的若干变换系数，进行IDCT重构图像，计算重构图像的信噪比-Reading a 256* 256 image, it will be divided into several blocks of 8*8 pixel, keep each optimal Z transformation of sequence number, IDCT transform coefficient calculation
DCT
- 用matlab实现的灰度图像DCT变换的源程序。-Matlab implementation of the gray image with DCT transform of the source.
DCT
- 基于DCT域数字图像水印的MATLAB实现-DCT domain based on MATLAB implementation of digital image watermarking
media
- huffman 编码来处理图像 DCT变换-huffman coding to DCT transform processing images
DCT
- 实现了彩色图像上的DCT变换和DCT反变换-Color image on the realization of the DCT transform and inverse transform DCT
3
- 编程实现图像DCT高通、低通滤波器并与傅立叶变换做比较-Programming image DCT high pass, low pass filter and compared with the Fourier transform
dct
- 图像压缩 dct 一个图像预测编码（DCT）的简单程序-I own an image prepared by the Predictive Coding (DCT) the simple procedure
DCT-MATLAB
- 利用DCT变换对灰度图像进行压缩，求出压缩比；对比不同压缩比的图像。-DCT transform using grayscale image compression, the compression ratio obtained compare different compression ratio of the image.
DCT-and-iDCT
- 一个简单的图像DCT变换和反DCT变换 没有注释-A simple image DCT and inverse DCT transform
DCT
- 利用DCT变换对灰度图像进行压缩，求出压缩比；对比不同压缩比的图像-DCT transform compressed gray image compression ratio is obtained comparing different image compression ratio