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Description: Simulink 的每个模块对用户而言都是透明的，用户只须知道模块的输入、输出以及模块的功能，而不必管模块内部是怎么实现的，于是留给用户的事情就是如何利用这些模块来建立模型以完成自己的仿真任务；至于Simulink 的各个模块在运行时是如何执行，时间是如何采样，事件是如何驱动等细节性问题，用户可以不去关心，正是由于Simulink 具有这些特点，所以它被广泛的应用在通信仿真中，利用Simulink 强大的工具箱和其建模的优势建立了常用的DPCM数字电话通信系统仿真模型，对该通信系统进行了模型构建、系统设计、仿真演示、结果显示以及综合性能分析，而且该分析方法同样可推广到其它的通信系统，具有普遍意义。-Simulink-based simulation of Simulink DPSK communication system is provided by MATLAB dynamic system modeling and simulation of a software package that allows users to shift attention from the programming model of the structure, the user save a lot of repetitive coding work Simulink Each module is transparent to the user, the user need only know the module s input, output and functional modules, rather than how the realization of the internal control module, and then left to the user to do is how to use these modules to build model to fulfill its a simulation tasks as Simulink s Ge Ge module at run time how Zhi Xing, Shi Jian yes how to sample, events are the details of how to drive and so on Xing problem, users can not care, Zheng Shi as Simulink those characteristics, so Ta is widely used in communication simulation, using Simulink toolbox and its powerful modeling advantage of the establishment of a common DPCM Digital telephone communication system simulation model, the communica
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Author: wjw |
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Description: 压缩包的内容包括：1.有关JPEG和DPCM算法的文章；2.实现其算法的压缩程序3.有关图像压缩方面的资料。读者请注意：
<1>这里讨论的是灰度图像的压缩不涉及彩色图像。
<2>实现压缩时，输入的图像数据采用一种自定义的格式（com 格式），前四个字节记录图像的宽度和高度，之后就是逐
行的图像数据，图像的开头和结尾没有任何标记。这种格式的图像数据是从BMP图像中得到的。
<3>这里没有JPEG算法的解压程序，压缩后的数据存成标准的JPEG文件格式，任何视图软件都可以打开。DPCM方法中的解
压缩程序将数据仍然存成com格式，可以将其转成PGM格式观看，压缩包中由com转为PGM格式的程序。
<4>所有的C程序均是在Linux（Rethat7.3)下完成。-Compressed package includes: 1. The JPEG and DPCM algorithm article 2. To achieve its compression algorithm procedure 3. The image compression information. Readers please note:
<1> discussed here is the gray image compression does not involve color images.
<2> to achieve compression, the input image data using a custom format (com format), record the first four bytes of the image width and height, and then is gradually
Line of image data, image mark the beginning and no end. This format of image data is obtained from the BMP image.
<3> There are no procedures for JPEG decompression algorithm, compressed data stored as a standard JPEG file format, you can open in any view. DPCM method of solution
Compressed program data is still stored as com format, you can watch it turn into a PGM format, compressed in the com format to PGM program.
<4> All the C programs are in Linux (Rethat7.3) to complete.
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Author: shikaichang |
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Description: 《Visual C++数字图像获取、处理及实践应用》杨枝灵、王开等编著。内容：第4章 图像增强（对比度增强、灰度变换法、直方图修整法、图像平滑、图像锐化、伪彩色和假彩色增强）；第5章 图像复原（逆滤波复原、维纳滤波方法）；第6章 图像处理中的正交变换（傅立叶变换、离散余弦变换（DCT）、沃尔什变换、基于特征向量的变换、霍特林（Hotelling）变换、SVD变换、小波变换、Mallat算法）；第7章 图像压缩编码（霍夫曼（Huffman）编码、算术编码、游程编码（Run Length Coding）、位平面编码、预测编码、DPCM、JPEG 2000编码）；第8章 图像配准 第9章 目标检测与运动检测 第10章 图像形状特征分析（骨架检出、轮廓提取）；第11章 图像分割（边界跟踪、阈值分割区域生长、分裂合并、Canny算子）；第12章 图像的模式识别 -"Visual C++ digital image acquisition, processing and practical application," Yoji Ling, WANG Kai, eds. Contents: Chapter 4, image enhancement (contrast enhancement, gray level transformation, histogram trimming, image smoothing, image enhancement, false color and false color enhancement) Chapter 5 Image restoration (inverse filtering restoration, Wiener filter ) Chapter 6 Image Processing orthogonal transformation (Fourier transform, discrete cosine transform (DCT), Walsh transform, feature vector-based transform, Hotelling (Hotelling) transform, SVD transform, wavelet transform, Mallat algorithm ) Chapter 7 image coding (Huffman (Huffman) coding, arithmetic coding, RLE (Run Length Coding), bit plane coding, predictive coding, DPCM, JPEG 2000 encoding) Chapter 8 image registration section 9 Target Detection and Motion Detection Chapter Chapter 10, Image Shape Analysis (skeleton detection, contour extraction) Chapter 11 of the image segmentation (boundary tracking, segmentation, r
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Author: chengshuai |
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Description: 差分脉冲编码调制（）的matlab模块仿真，实现抽样，量化，预测，编码并解码-DPCM
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Size: 2745344 |
Author: 小迪 |
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Description: PCM和DPCM的调制方式的matlab源代码，仅供参考。-PCM and DPCM in the modulation of the matlab source code for reference only.
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Size: 2048 |
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Description: 图像压缩 JPDG和DPCM算法的介绍 实现算法压缩程序-Image compression algorithm is introduced JPDG and DPCM compression algorithm program
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Size: 285696 |
Author: 王倩 |
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Description: describes methods of DPCM digital image processing compression technique-describes methods of DPCM digital image processing compression technique
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Size: 235520 |
Author: Asmaa |
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Description: Image Compression (Enhanced DPCM)
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Size: 583680 |
Author: Pedram |
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Description: DPCM method description-DPCM method description
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Size: 392192 |
Author: Livescu_85 |
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Description: dcpm compression image
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Size: 1024 |
Author: mamifalda |
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Description: 本程序实现简单JPEG压缩编码和解码功能。将一副64*64的灰度图进行JPEG压缩编码，编码过程包含DCT转换，量化，ZigZag扫描和游程编码。不包含DC分量的DPCM编码和最后的霍夫曼编码，但是基本实现了JPEG编码，具有较好的压缩率。-This procedure is simple JPEG compression encoding and decoding functions. This is a 64* 64 grayscale JPEG compression encoding process consists of the DCT conversion, quantization, and ZigZag scan and RLE, without the DPCM coding of DC components and the final Huffman coding. So this is a the basic JPEG encoding procedure.
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Size: 888832 |
Author: hechao |
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Description: 图像的差值脉冲编码调制，通过预测器中现有系数进行预测，并统计预测误差，再用量化器进行量化-Differential pulse code modulation of the image, through the existing coefficient in the predictor to predict, and statistical prediction error and quantize
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Size: 186368 |
Author: 汪晨 |
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Description: 关于小图像DPCM算法代码，包含了计算图像残差并复原的算法，非常有用！-
On the small image DPCM algorithm code, including the calculation of the image residuals and recovery algorithm, is very useful!
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Size: 11264 |
Author: rao |
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Description: digital processing cm in speech coding
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Size: 1024 |
Author: Mohammad |
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Description: dpxm simulink仿真 模块建立 波形分析-dpxm Simulink simulation
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Size: 3072 |
Author: 贾雯 |
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Description: 用于通信信道的仿真模拟，在理想环境下模拟通信信道的各种影响。-For the communication channel simulation, simulation in the ideal environment for the various effects of the communication channel.
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Size: 27648 |
Author: 秦国亮 |
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Description: vc++实现灰度图像的DPCM编解码，可保存原图与编解码之后的图像。-vc++ implementation of the DPCM gray image coding and decoding, and encoding and decoding can be saved after the original image.
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Size: 4120576 |
Author: rubygj |
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Description: jpeg coder and decoder with out using block proc function.Reading the image into 8x8 blocks and apllied the DCT transform and quantization using quantization tables.After that seperation of DC and AC coefficients and I applied the DPCM for DC coeffcients,Run Length Coding for AC coefficients.The encoded data is decoded by the decoder which i implemented the reverse process of encoding-jpeg coder and decoder with out using block proc function.Reading the image into 8x8 blocks and apllied the DCT transform and quantization using quantization tables.After that seperation of DC and AC coefficients and I applied the DPCM for DC coeffcients,Run Length Coding for AC coefficients.The encoded data is decoded by the decoder which i implemented the reverse process of encoding...
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Size: 2048 |
Author: arsenal |
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Description: 本程序是自己写着验证DPCM的一个程序，没有多大实际意义，可以作为学习用-This program is a DPCM own written verification procedures, there is not much practical significance, can be used as a learning
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Size: 10528768 |
Author: yu xiaoping |
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Description: 本代码由matlab语言编写，实现了jpeg算法，主要为了说明基本的JPEG功能。经过DCT变化，量化，进行DPCM编码，然后之字形扫描AC系数，进行行程（LZW）编码。 显示原始图象和经编码解码后的图象，显示压缩比，并计算均方根误差。-The code consists of matlab language, to achieve a jpeg algorithm, mainly to illustrate the basic functionality of JPEG. After changing DCT, quantization, for DPCM coding, then the AC coefficients of the zigzag scanning, for stroke (LZW) coded. Shows the original image and the encoded decoded image showing the compression ratio, and calculate the mean square error.
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Size: 5120 |
Author: wyd |
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