搜索资源列表
dctcompr
- 基于DCT变换的图像压缩,分别给出了灰度图和真彩图的压缩方法。-DCT-based image compression, respectively, are given grayscale and true color pictures of the compression method.
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
imagecompression
- 这是一个关于dct变换的图像压缩算法的例子,希望对大家有用-a program about dct image compression
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 video in the DCT (Discrete Cosine
DCT
- 数字水印系统的实现——基于DCT的鲁棒水印。图像中数字水印的嵌入,分块DCT反变换-Image digital DCT
imagedatabase
- 本文首先介绍了静态图像压缩(jpeg)编码算法的基本原理、压缩的实现过程及其重要过程的离散余弦变换(DCT)算法的实现原理及软件实现的例程,所需图像-This paper describes the static image compression (jpeg) coding algorithm is the basic principle of compression process and the important process of the realization of discret
DCT
- 图像的DCT变换-Image of DCT transform. . . . . . . . . . . . . .
3971017DCT
- 对原始灰度图像 Lena_gray.bmp进行图像压缩实验 1.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,比较结果。 2.可以使用 Matlab - Image Processing Toolbox 中的函数实现。-gray image of the original image compression Lena_gray.bmp an experiment. This diagram 8 8
23825792DCT
- MFC下做的图像DCT变换程序,可以对彩色图像进行DCT变换,有MFC界面,对初学者有用-Under the MFC to do the image DCT transform process can be DCT-color images, there are MFC interface, useful for beginners
ch3_dct
- fpga dct变换,用以视频压缩和处理图像-fpga dct
ImageProcessing
- JPEG图像压缩标准MATLAB仿真程序。包括DCT变换及其逆变换、量化及反量化等过程。-JPEG image compression standard MATLAB simulation program. Including the DCT transform and its inverse transform, quantization and inverse quantization and other processes.
DCTtransformation
- DCT变换的基本思路是将图像分解为8×8的子块或16×16的子块,并对每一个子块进行单独的DCT变换,然后对变换结果进行量化、编码-The basic idea is to transform DCT the image is decomposed into 8 × 8 sub-block or 16 × 16 sub-blocks, and each separate sub-block DCT, and then quantify the results of the transform c
jpeg_compression_encode
- jpeg图像压缩编码程序,图像的DCT变换是调用Matlab自带的DCT变换函数dct来完成-jpeg image compression coding process, DCT transform is called the image that comes with Matlab DCT dct to complete the transformation function
DCTchange
- matlab中的dct变换,在图像中利用dct变换嵌入水印,并提取-The dct matlab transformation in the image watermarking using dct transform, and extract
DCT
- 二维离散余弦变换 c# 实现图像压缩和特征提取 -Discrete Cosine Transform for Feature Extraction Decription: Implementation of 2D discrete cosine transform in c# Download source: http://www.codeproject.com/KB/GDI/2D-DCT.aspx
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
sy1_4
- 读取图像lena.tif,进行DCT变换,每个图像块保留10个DCT系数进行重构图像,比较重建图像与原始图像的差异。-Read the image lena.tif, the DCT transform, each image block of 10 DCT coefficients to retain the reconstructed image, reconstructed image compared with the original image differences.
dct-dft
- 对一幅图像进行DCT dft变换后的结果和运行出来的图形-Image on a DCT dft transformed results and running out of graphics
DFT-DCT
- 基于VC++的图像的DFT变换和DCT变换,并可实现两者间的对比转换-VC++ based on the image of the DFT transform and DCT transform, and to achieve the contrast between the two conversion
DCT
- JPEG标准中规定了4种压缩模式[15]:顺序编码(Sequential encoding),渐进编码(Progressive encoding),等级编码(Hierarchical encoding),无损编码(Lossless encoding)。应用最为广泛的为基于DCT变换的顺序编码,也称之为基准模式(Baseline mode),其它几种模式都以此为基础。这里,采用了JPEG基准模式对图像进行压缩,在基准模式中,熵编码采用哈夫曼编码方法。 -JPEG standard specif