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This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN -
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This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN -
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This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN -
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1下载：
This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN -
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Companding is essentially a technique for achieving non-uniform quantization. There are basically 2 methods which are most popular in literature.:-A-law companding and u-law companding. These algorithms help in achieving to an extend, compression. Th
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实现对视频图像的游程编码和解码。过程包括：二维DCT变换、量化及游程编码。
一般来讲对于视频的I帧进行恢复，其信噪比可达到38DB以上。-Implementation of the video image encoding and decoding run-length. Process includes: two-dimensional DCT transform, quantization and run-length encoding. In general, I frame for
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用LBG算法对图像进行矢量量化，并实现了图像解码，图像解码视觉效果良好。-realized image vector quantization employed the LGB algorithm, and achieved the image decoding, image decoding visual effect is good.
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对给定语音信号进行抽样、量化和13折线PCM编码，经过传输后，接收端进行PCM译码，对此过程进行matlab仿真分析。-Given speech signal sampling, quantization and PCM 13 line coding, after transmission, the receiver for PCM decoding, matlab simulation of this process
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this function perform block vector quantization encoding and decoding for still image by using matlab program
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通信系统的matlab仿真，实现抽样量化、信源编码解码，信道编码解码，调制解调-Matlab simulation of the communication system, sampling quantization, source coding and decoding, channel coding and decoding, modulation and demodulation
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MATLAB环境下的Simulink仿真平台，构建PCM编码与解码电路图，对模拟信号进行采样、量化、编码, 将编码后的信号输入信道再进行PCM解码，还原出原信号.建立仿真模型,分析仿真波形。-MATLAB environment Simulink simulation platform to build PCM encoding and decoding circuit diagram of the analog signal is sampled, quantization, encoding
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（1） 在c或matlab环境下实现卷积码编码模块，并嵌入实验一的通信链路中，要求编码模块有一定通用性可以设定约束长度、卷积码抽头系数；
（2） 设定约束度分别为7、9的1/2卷积码，仿真分析这些码的硬判决译码性能、绘制误码性能曲线，对比不同约束度下卷积码的性能，分析译码复杂性；
（3） 设定约束度为7的1/2卷积码，进行无量化软判决译码，仿真分析比较软硬判决译码性能；
（4） 设定约束度为7的1/2卷积码，量化比特分别为3、4、5、6，仿真分析比较量化对误码性能的影响；
（5）
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于matlab gui 平台的pcm语音信号处理，其中包括抽样、量化、编码、解码，及其时域频域图建Matlab GUI界面通常有两种方式：
1，使用 .m 文件直接动态添加控件
2. 使用 GUIDE 快速的生成GUI界面
显然第二种可视化编辑方法算更适合写大型程序-
Matlab gui based pcm voice signal processing platform, including sampling, quantization,
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利用matlab进行基于小波变换的图像量化编解码 不错的 很好-By using of matlab based on wavelet transform image quantization decoding good is very good
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利用matlab进行基于小波变换的图像量化编解码 不错的 很好(By using of matlab based on wavelet transform image quantization decoding good is very good)
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使用matlab实现的jpeg基本系统，输入为灰度图像，输出为使用‘0’‘1’字符表示的字符串。
包括dct编码与解码、量化与反量化，Huffman编码与解码(The JPEG basic system implemented with MATLAB is entered into a gray image, and the output is a string represented with a '0' '1' character.
Including DCT coding and de
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差分脉冲编码调制（DPCM）的matlab模块仿真，实现抽样，量化，预测，编码并解码(The MATLAB module of differential pulse code modulation (DPCM) is simulated to realize sampling, quantization, prediction, coding and decoding.)
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