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fenxi
用牛顿分析分析方程根的位置，并且用分形算法分析逻辑斯蒂模型。(Analysis of equations with the Newton root position, and the fractal algorithm for logistic model.)
- 2010-07-23 16:52:17下载
- 积分：1
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Optical-Wireless-Communication
研究多进制脉冲位置调制和关闭键控在直接检测光无线通信系统中存在的大气影响，比较了ook与PPM调制方式的区别。(M-ary pulse position modulation on and off keying atmospheric effects in the direct detection of optical wireless communication systems, compare the difference of the ook PPM modulation mode.)
- 2012-07-12 21:25:34下载
- 积分：1
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corrosions
形态学的膨胀，腐蚀，细化的MATLAB的源代码，对初学者有用(Morphological expansion, corrosion, thinning of MATLAB source code, useful for beginners)
- 2015-04-02 19:39:39下载
- 积分：1
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pappa
computing the peak to average power ratio in ofdm metwork
- 2010-12-17 00:11:44下载
- 积分：1
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JPEGimageCompressiontechniquesimplementationandopt
摘 要
文章以空间监控系统为背景,深入研究了JPEG图像压缩标准的实现方法,并基于FPGA对其进行了实现和优化。文中给出了详细的实现方法和优化过程,测试表明达到了很好的效果。
简单介绍了有损静态图像压缩当前有两种比较流行的标准JPEG和JPEG2000。说明了用JPEG方法压缩的原因。
介绍JPEG基本原理：JPEG对灰度图像的压缩处理过程主要包括:图像分割,离散余弦变换(DCT),量化(Quantization),“Z”形排序(Zigzag Scan),差分脉冲编码调制(Differential Pulse Code Modulation,DPCM)对直流系数(DC),行程长度编码(Run-Length Encoding,RLE)对交流系数(AC),霍夫曼(Huffman)编码等。
JPEG标准的特点是离散余弦变换。
比较详细介绍压缩系统的构成和实现。实现提及步骤， JPEG压缩模块设计和编码模块实现细节。
(Abstract
Article in the space monitoring system for the background, in-depth study of the JPEG image compression standard implementation methods and carried out based on FPGA implementation and optimization. In this paper, a detailed method of implementation and optimization of the process, testing showed that to achieve good results.
Easy introduction of harmful static image compression has two kinds of comparisons that the current popular standard JPEG and JPEG2000. Illustrated by the reasons for JPEG compression method.
JPEG introduce the basic principles: JPEG compression of gray-scale image processing include: image segmentation, discrete cosine transform (DCT), quantization (Quantization), "Z"-shaped sort (Zigzag Scan), differential pulse code modulation (Differential Pulse Code Modulation, DPCM) on the DC coefficient (DC), Run Length Encoding (Run-Length Encoding, RLE) of the exchange coefficient (AC), Hoffman (Huffman) coding.
JPEG standard is characterized by discrete )
- 2009-03-29 08:39:04下载
- 积分：1
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morse
这是一个莫斯密码程序，可以方便进行莫斯变换和逆变换。
快和小伙伴们用密码通信吧。
( This is a Moss password program that can facilitate Moss transform and inverse transform.
Fast and small partners to communicate it with a password.)
- 2014-11-17 18:42:55下载
- 积分：1
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mlsr
北京大学 流形学习与稀疏表示 课程课件.(包括基本数学工具、黎曼几何、降维方法、稀疏表示等理论和编程方法）(Peking manifold learning courseware and sparse representation. (Including basic mathematical tools, Riemannian, dimension reduction methods, sparse representation theory and programming methods))
- 2015-04-13 14:22:33下载
- 积分：1
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3
说明： 3. A New Algorithm for Less Distortion and High Capacity Steganography Model using Blocjs-Based Method
- 2014-10-03 05:32:52下载
- 积分：1
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svmtrain
svm的样本训练代码，用于分类样本数据并进行数值预测的程序(The sample program svm training program, sample data for classification and numerical prediction)
- 2017-01-04 14:51:57下载
- 积分：1
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MATLAB-solving-equation
讲解怎么用matlab解微分方程的课件及相关原程序(a series of materials of solving equations on matlab)
- 2013-09-14 16:35:23下载
- 积分：1
