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rgbquadtreehojoon
This is 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 - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious.
(This is 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 - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious.
)
- 2009-09-17 14:52:16下载
- 积分：1
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拉丁超立方 (2)
说明： 假如数据中有N 个变量，而我们想抽取的样本的数量是M,那么在对数据进行抽样的时候，这种方法首先会把N个变量的设计空间均匀的划分开为M份，然后在每个划分好的区域中随机的抽取一点，最后，从这M个变量里，随机挑选之前选好的点，构成我们的样本(If there are n variables in the data, and the number of samples we want to extract is m, then when sampling the data, this method will first divide the design space of n variables into M parts evenly, and then randomly extract a point in each divided area. Finally, from the m variables, randomly select the previously selected points to form our sample)
- 2021-04-07 19:47:52下载
- 积分：1
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waveletqumianbo
地震信号处理当中应用小波去除面波干扰，小波变换后进行阈值处理，反变换之后得到面波压制后的地震信号(Surface wave seismic signals obtained after the seismic signal processing to suppress them after removing the surface wave interference wavelet, wavelet transform thresholding, anti transformed)
- 2020-06-30 23:00:02下载
- 积分：1
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Lee fliter
Lee 滤波例子和代码，程序的说明和功能非常详细。(Lee filter examples and code)
- 2017-06-24 11:27:00下载
- 积分：1
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IOport
io口控制源代码 io口控制源代码(io I io I control source code control source code)
- 2007-07-18 17:39:36下载
- 积分：1
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Contempoary_Communication_Systems_Using_Matlab
现代通信系统使用MATLAB第二版（中英文pdf及所有程序m文件）(Contemporary Communication Systems Using Matlab By:JohnG.Proakis )
- 2010-06-28 21:21:20下载
- 积分：1
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randinterval
本函数将利用随机序列进行间隔控制,选择消息隐藏位置(This function will use a random sequence interval control, select the message hidden location)
- 2013-12-02 21:02:28下载
- 积分：1
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crc_rs_jiaozhi
一个简易的通信系统，包括CRC循环冗余码，RS信道编码，交织编码，可以对抗信道突发噪声。(A simple communication system comprising cyclic redundancy code CRC, RS channel coding, interleaving encoding, channel against burst noise.)
- 2021-03-09 08:59:27下载
- 积分：1
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3-8
3-8译码器，可以讲三位二进制输入转换为8中取1的输出信号(3-8 decoder, you can talk about the three binary input is converted to 8 of the output signal from 1)
- 2009-07-16 17:23:30下载
- 积分：1
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LMS-and-kalman
包括了基本的卡尔曼滤波和自适应滤波，实现语音去噪(Including the basic Calman filter and adaptive filter, speech denoising)
- 2012-04-11 19:57:01下载
- 积分：1
