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基于DCT变换的图像编码方法研究
- 本文结合DCT变换的特性，利用分形的Peano一hilbert扫描曲线，对基于DCT变换的图像编码方法进行了研究，并提出了改进方法。主要工作分为两个部分: 一是在分块DCT基础上的改进。对分块后生成的各图像块矩阵，不直接作二维DCT变换，而是先进行扫描，使之重排成一维向量，再进行一维DCT变换，这样可以减少运算量。 其次是对层次余弦变换编码部分的改进。使用层次DCT变换与零树编码相结合的方法，并在扫描编码过程中，按Peano一hilbert扫描顺序进行编码。这样不仅可以减少“块效应”，而且可以加
图像压缩的几个MATLAB算法
- 图像压缩的几个MATLAB算法：分块编码、高斯金字塔、离散余弦变换、单值分解。-Image Compression Algorithm several MATLAB : Block Coding, Gaussian pyramid, discrete cosine transform, singular value decomposition.
lurastud
- 计算机图象处理,图象压缩处理,图像压缩的几个MATLAB算法：分块编码、高斯金字塔、离散余弦变换、单值分解。-computer image processing, image compression, image compression algorithm several MATLAB : Block Coding, Gaussian pyramid, discrete cosine transform, singular value decomposition.
dac0832.用单片机来实现方波、正弦波、余弦波的输出
- 用单片机来实现方波、正弦波、余弦波的输出,在proteus中模拟电路,并在示波器上观测波形.,Using single chip to achieve the square wave, sine wave, cosine wave output of analog circuits in proteus and observed in the oscilloscope waveform.
main.计算文本之间相似度的程序
- 计算文本之间相似度的程序，用于文本的聚类。是在已知各个文本的文本特征向量基础上进行计算的，利用余弦值计算,Calculation of similarity between the text of the procedures for text clustering. Are known at all the text of the text feature vector calculated based on the use of cosine values
05.rar
- vc++编程实现图像的傅里叶变换、离散余弦变换和沃尔什变换。,vc++ Programming image Fourier transform, discrete cosine transform and the Walsh transform.
vc.rar
- vc计算器 有 二进制，十进制，八进制，十六进制 科学计算函数，包括(反)正弦、(反)余弦、(反)正切、(反)余切、开方、指数等函数运行,vc Calculator are binary, decimal, octal, hexadecimal scientific computing function, including the (Anti-) sinusoidal, (anti-) cosine, (anti-) tangent, (anti-) Cotangent, prescrib
fourier.rar
- 该源码提供了二维傅立叶变换、离散余弦变换,The source provides a two-dimensional Fourier transform, discrete cosine transform
2DDCT.rar
- matlab实现二维离散余弦变换的图像压缩程序，可以学习一下,matlab implementation of two-dimensional discrete cosine transform image compression process, can learn about
BPSK.rar
- BPSK系统结构的Matlab程序，包括升余弦波形成形，系统误码率，时延，以及说明性文档。,BPSK system architecture of the Matlab procedures, including angioplasty or cosine wave, the system bit error rate, delay, and the descr iptive document.
code.rar
- 基于离散小波余弦变换DCT的数字水印算法，实现了水印的嵌入提取等过程。毕业设计源代码,Discrete Cosine Transform Based on Wavelet Digital Watermarking Algorithm in DCT, the watermark embedded in the realization of the process of extraction. Graduation Project source code
cordic.rar
- 基于cordic算法的正余弦信号发生器，通过编译仿真,Cordic algorithm is based on the cosine signal generator, through the compiled simulation
mygui1.zip
- MATLAB初级图形演示系统，用于产生正余弦曲线，适合MATLAB初学者用于编程练习,MATLAB junior graphic presentation systems are used to generate cosine curve, suitable for MATLAB programming exercises for beginners
Quantify.rar
- 发送端采用严格的开根号升余弦滤波器，而发送端采用进行过量化处理的开根号升余弦滤波器，仿真量化处理对系统性能的影响,Sender strict roots and raised cosine filter, while the sender had used for the quantification of the roots and raised cosine filter, simulation, quantification of the impact on system performa
Untitled1
- 模拟信号发生器，模拟正弦，余弦，三角波，锯齿波，同时可实现幅度、频率调节-Analog signal generator, analog sine, cosine, triangle, sawtooth, while maintaining a range of frequency adjustment
DiscreteCosineTransform
- This a discrete cosine transfomartion filter that can be used to compress an image. [Comments are added in the soruce code]-This is a discrete cosine transfomartion filter that can be used to compress an image. [Comments are added in the soruce code]
sin_cos_rom
- 9bit、512个数据点（1/4周期）的正弦余弦ROM查值表-9bit, 512 data points (1/4 cycle) check the value of the sine and cosine table ROM
blockzigzag.rar
- 先将图像分为4*4的重叠分块,然后将各个分块的三个颜色通道的直方图平均化,再将其进行离散余弦变化,分别提取各个通道的低频系数.,First image is divided into 4* 4 sub-block overlap, and then each sub-block of the three color channel histogram equalization, and then its discrete cosine Change, were extracted from ea
Atomizer.rar
- Atomizer is a package of Matlab routines for atomic decomposition of 1-d signals in various dictionaries. The atomic decomposition techniques include Basis Pursuit, the Method of Frames, the Best Orthogonal Basis method for wavelet packets/cosine pac
dct.rar
- 离散余弦变换的设计源代码以及测试源代码和仿真图,Design of discrete cosine transform source code and test source code and simulation plan