activlev

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 )

PID Simulation using simulink in matlab.

M/M/K的计算机仿真，排队系统是一种比较典型的离散动态系统，按照规定，它的仿真必然涉及到时间的表示，事件驱动的表示。这里我们采用静态的仿真思想实现M/M/1的计算机仿真。(M/M/K of the computer simulation, queuing system is a typical discrete dynamic system, in accordance with the regulations, it necessarily involves the simulation of time that the event-driven representation. Here we use a static ideology M/M/1 simulation computer simulation.)

在振动台试验后由测得的加速度值两次积分求位移(Acceleration of displacement)

matlab程序 模拟波场传播切片的动态模拟过程(Simulation of wave field propagation dynamics simulation slice)

Region Growing algorithm

NSGA2算法中文版详细介绍,非常实用的多目标优化代码(NSGA2 algorithm Chinese version in detail)

包含所有约束优化问题中涉及的matlab源程序。包含Rosen梯度法求解约束多维函数的极值，外点罚函数法解线性等式约束，外点罚函数法解一般等式约束，内点罚函数法，混合罚函数法，混合罚函数加速法，乘子法，坐标轮换法及复合形法(Contains all the constrained optimization problem involves matlab source. Contains Rosen gradient method for solving constrained multi-dimensional function extremum, external point penalty function method for solving linear equality constraints, external point penalty function method for solving general equality constraints, interior point penalty function method, mixed penalty function method, mixed penalty function acceleration method , multiplier method, the coordinate rotation method and complex method)

this is related soft copy of books.in robust control

未来线路预测,分析误差,小波包分析提取振动信号中的特征频率，sar图像去噪的几种新的方法。( Future line prediction, error analysis, Wavelet packet analysis to extract vibration signal characteristic frequency, Several new methods sar image denoising.)