DBF_s

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 )

Solving Index-1 DAEs in MATLAB and Simulink

基于变频器的空间电压矢量PWM控制matlab程序设计与实现(Matlab program design and implementation of the inverter space voltage vector PWM control)

河北工业大学的计算机组成小题的题库 绝对的题库 怎么来的就不说了 总之一句话 绝对的题库 而且题的总量不多(Hebei University of the theme of the computer in small absolute Exam exam how come not say a word question bank and question the absolute amount of not more than)

求变截面梁的模态，目前只支持一处变截面，可以自己修改尺寸数据，简单好用(mode shape of the stepped cantilever beam)

matlab code for PDF estimation by KNN method for 1 dimensional and 2 dimensional data

图像处理 证明二维夫里叶变换等价于两步一位傅里叶变换的程序(image processing proved two Weaver Fourier Transform equivalent to a two-step procedure Fourier Transform)

自己编的使用小波实现的纹理图像分割，具体过程是先对图像进行三级小波分解，每级都对系数聚类并指导下一级分类，分割效果较好~ (own addendum to the use of wavelet achieve the texture image segmentation, specific process is the first image wavelet decomposition three each of the levels are right and clustering coefficients under the guidance of a classification, segmentation better ~)

intercorrelation function

此算法为多传感器目标定位法，是基于实现交叉定位，采用公垂线法。(algorithm for the multi-sensor target identification, is based on the realization of cross-positioning, use common vertical line method.)