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sem1
about semaphores explaing the program about the semaphores
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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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daima
对回波信号的信号处理过程分为正交相检，固定杂波对消，MTD窄带滤波器组处理，相参积累和恒虚警处理(Signal processing of echo signals into quadrature-phase review process, the fixed clutter cancellation, MTD narrowband filter processing, coherent and CFAR)
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STEP-LFM
产生调频步进信号，再进行脉冲压缩，混频，最后进行高分辨率成像。本程序用于测距，参数可以进行修改。注释详细。(stepped LFM generating, and then pulse compression, mixing, and finally high-resolution imaging. The procedure used for ranging, the parameters can be modified. Detailed notes.)
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GL
This interface specifies the methods for a visitor of Constant objects.
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greymodel
说明： 灰预测，运用灰预测的MATLAB实现，建立模型，求解未来的预测值(gray modol)
- 2009-07-23 16:44:13下载
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hh
说明： 数学建模最优路径问题及投资例题解答，通过matalb编程解决以上问题(Mathematical model interpolation algorithm, with the mathematical modeling, use of matble programming solve interpolation fitting mathematical modeling optimal path problem and investment examples solutions, through the matalb programming solve the above problem)
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ZHUSHUI
功率分配，注水功率分配MATLAB仿真程序(Power allocation, waterfilling power allocation of MATLAB simulation program)
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cs_cvx
压缩传感，压缩感知，压缩采样，稀疏表达，稀疏表示，的入门例子(compressive sensing, compressed sensing)
- 2009-12-13 09:19:56下载
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newanneal
模拟退火算法，常用的数值优化算法，适合初学者，非常方便(simulated annealing method, commonly used numerical optimization algorithm, for beginners, a very convenient)
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